Get Free Samples! Come fill out the form ! ! !

Call us: +86 0755-82563503

English

Currency: $ US Dollar

STM32F103C8T6
MFI343S00177
STM32F407VET6
ATMEGA328P-PU

Categories
- Integrated Circuits (ICs)
  - Integrated Circuits (ICs)
  - AC to DC Converter ICs
  - Active Filters
  - ADC
  - AFE
  - Analog Multipliers & Dividers
  - Analog Switches & Multiplexers ICs
  - Application Specific Microcontrollers
  - Application Specific Timer
  - Audio Amplifiers
  - Audio Special Purpose
  - Battery Chargers ICs
  - Battery Management ICs
  - Buffers & Transceivers
  - Capacitive Sensors
  - Clock Buffers & Drivers
  - Clock Generators
  - CODECs Interface ICs
  - Comparators
  - Configuration Proms for FPGAs
  - Controllers Interface ICs
  - Converting Interface ICs
  - Counters & Dividers
  - CPLDs
  - Current Regulator IC
  - DAC
  - DC DC Voltage Regulators
  - DC to DC converter
  - DDS
  - Delay Lines Timing ICs
  - Digital Potentiometers
  - Display Drivers ICs
  - Drivers Interface ICs
  - DSP
  - Embedded ICs Modules
  - Energy Metering ICs
  - FIFOs Memory
  - Flip Flops
  - FPGAs
  - FPGAs with Microcontrollers
  - Full & Half-Bridge Drivers ICs
  - Gate Drivers ICs
  - Gates & Inverters
  - Hot Swap Controllers
  - I/O Expanders
  - IC Batteries
  - Ideal Diode controller
  - Instrumentational OP Amps
  - Interface ICs Modules
  - Laser Driver ICs
  - Latches
  - LED Driver ICs
  - Lighting Controllers
  - Linear Comparators
  - Linear Regulator Controllers
  - Linear Voltage Regulators
  - Memory
  - Memory Batteries
  - Memory Controllers
  - Microcontrollers
  - Microprocessors
  - Modems ICs & Modules
  - Motor Drivers
  - Multi-Functional Gates & Inverters
  - Multivibrators
  - Multivibrators
  - PFC PMICs
  - PLDs
  - PoE Controllers
  - Power Supply Control ICs
  - Power Switches ICs
  - Programmable Timers & Oscillators
  - RMS to DC Converters
  - RTCs
  - Sensor & Detector Interface ICs
  - Serializers & Deserializers
  - Shift Registers
  - Signal Buffers
  - Signal Switches & Multiplexers
  - Signal Terminators
  - SoC
  - Special Purpose ADCs/DACs
  - Special Purpose Amplifiers
  - Special Purpose Analog Switches
  - Specialized ICs
  - Specialized Interface ICs
  - Specialized Power Management ICs
  - Specialized Voltage Regulators
  - Specialty Logic ICs
  - Switching Voltage Regulators
  - Telecom Interface ICs
  - Thermal Management
  - Touch Screen Controllers
  - UARTs
  - Universal Bus Functions
  - V/F & F/V Converters
  - Video Amps & Modules
  - Video Processing Linear ICs
  - Voice Record and Playback
  - Voltage Reference
  - Voltage Supervisors
  - Voltage Translators & Level Shifters
  - Integrated circuits, often referred to as ICs or microchips, are miniature electronic circuits that contain thousands to billions of transistors, resistors, capacitors, and other electronic components on a small semiconductor material. ICs are the building blocks of modern electronics and are used in a vast array of devices and systems, ranging from smartphones and computers to automotive electronics and medical devices. They provide compactness, high functionality, and improved performance by integrating multiple electronic functions onto a single chip.
- Connectors
  - Connectors
  - ARINC Connectors
  - Backplane Connector Contacts
  - Backplane Connectors Accessories
  - Backplane Connectors Housings
  - Backshells and Cable Clamps
  - Banana Tip Adapters
  - Banana Tip Binding Posts
  - Banana Tip Connectors Accessories
  - Banana Tip Jacks
  - Barrel Accessories
  - Barrel Adapters
  - Barrel Audio Connectors
  - Barrel Connectors
  - Barrel Power Connectors
  - Barrier Terminal Blocks
  - Between Series Adapters
  - Blade Type Power Connectors
  - Blade Type Power Connectors
  - Blade Type Power Connectors Accessories
  - Blade Type Power Connectors Housings
  - Board In Connectors
  - Board to Board Connectors
  - Card Edge Adapters
  - Card Edge Connectors Accessories
  - Card Edge Connectors Housings
  - Card Edge Contacts
  - Centronics Connectors
  - Circular Adapters
  - Circular Connectors
  - Circular Connectors Accessories
  - Circular Connectors Housings
  - Circular Contacts
  - Coaxial Connectors
  - Coaxial Connectors Accessories
  - D-Sub Adapters
  - D-Sub Connector Housings
  - D-Sub Connector Terminators
  - D-Sub Connectors
  - D-Sub Connectors Accessories
  - D-Sub Contacts
  - D-Sub Hoods
  - D-Sub Jackscrews
  - DIN 41612 Connectors
  - Din Rail Terminal Blocks
  - Edgeboard Connectors
  - Faceplates & Frames
  - Fiber Optic Adapters
  - Fiber Optic Connectors
  - Fiber Optic Connectors Accessories
  - Fiber Optic Connectors Housings
  - Flat Flexible Connector Housings
  - Flat Flexible Connectors
  - Flat Flexible Connectors Accessories
  - Flat Flexible Contacts
  - Foil Connectors
  - Hard Metric Connector
  - Headers & Male Pins
  - Heavy Duty Connectors Accessories
  - Heavy Duty Connectors Assemblies
  - Heavy Duty Connectors Frames
  - Heavy Duty Connectors Housings
  - Heavy Duty Connectors Modules
  - Heavy Duty Contacts
  - IC Adapters
  - IC and Component Sockets
  - IC Sockets Accessories
  - Inline Memory Module Sockets
  - Interface Modules Terminal Blocks
  - Keystone Accessories
  - Keystone Inserts
  - Knife Connectors
  - Leadframe Contacts
  - LGH Connectors
  - Magnetic Wire Terminals
  - Magnetics Modular Jacks
  - Memory Card Adapters
  - Memory Card Sockets
  - Memory Connectors Accessories
  - Modular Adapters
  - Modular Connectors Accessories
  - Modular Jacks
  - Modular Plug Housings
  - Modular Plugs
  - Multi Purpose Contacts
  - Panel Mount Connectors
  - Panel Mount Terminal Blocks
  - PC Pin Terminals
  - Photovoltaic Connectors
  - Photovoltaic Connectors Accessories
  - Photovoltaic Contacts
  - Pluggable Connectors
  - Pluggable Connectors Accessories
  - Pluggable Terminal Blocks
  - Power Distribution Terminal Blocks
  - Power Entry Connectors Accessories
  - Power Entry Connectors Modules
  - Quick-Connect & Quick-Disconnect Connectors
  - Rectangular Connectors
  - Rectangular Connectors Accessories
  - Rectangular Connectors Adapters
  - Rectangular Connectors Arrays
  - Rectangular Connectors Headers
  - Rectangular Connectors Housings
  - Rectangular Contact Inserts
  - Rectangular Terminals
  - RF Adapters
  - RF Contacts
  - RF Terminators
  - Ring Terminals
  - Screw Connectors
  - Shunts & Jumpers
  - Socket Terminals
  - Solder Lug Connectors
  - Spade Connectors
  - Specialized Backplane Connectors
  - Specialized Connectors
  - Specialized Terminal Blocks
  - Spring Loaded Contacts
  - Spring Loaded Rectangular Connectors
  - SSL Connectors
  - SSL Connectors Accessories
  - SSL Contacts
  - Terminal Block Adapters
  - Terminal Blocks - Contacts
  - Terminal Blocks Accessories
  - Terminal Jumpers
  - Terminal Junction Systems
  - Terminal Marker Strips
  - Terminal Strips and Turret Boards
  - Terminal Wire Ferrules
  - Terminals Accessories
  - Terminals Adapters
  - Terminals Housings
  - Transistor Sockets
  - Turret Connectors
  - Video Adapters
  - Video Connector Accessories
  - Video Connectors
  - Wire Pin Connectors
  - Wire Splice Connectors
  - Wire-to-Board Connectors
  - Wire-to-Board Terminal Blocks
  - Wiring Blocks Accessories
  - Wiring Modular Connectors
  - Connectors are devices used to establish electrical or mechanical connections between two or more components or systems. They provide a means for joining cables, wires, or other conductive elements, enabling the transmission of electrical signals, power, or data. Connectors come in a wide range of forms, including electrical connectors, coaxial connectors, modular connectors, and fiber optic connectors. They play a critical role in industries such as telecommunications, automotive, aerospace, and consumer electronics, facilitating reliable and secure connections.
- Discrete Semiconductors
  - Discrete Semiconductors
  - Arrays BJT Transistors
  - BJT Transistors Arrays
  - Bridge Rectifiers
  - DIACs and SIDACs
  - IGBTs Modules
  - IGBTs Transistors Arrays
  - JFETs Transistors
  - MOSFETs Transistors Arrays
  - Power Driver Modules
  - Pre-Biased BJT Transistors
  - Programmable Unijunction Transistors
  - Rectifier Diode Array
  - RF BJT Transistors
  - RF Diodes
  - RF MOSFETs Transistors
  - SCRs Thyristors
  - Single BJT Transistors
  - Single IGBTs
  - Single IGBTs
  - Single MOSFETs Transistors
  - Single-Phase Diode Rectifier
  - Specialized Transistors
  - Thyristors Modules
  - TRIACs Thyristors
  - Varactors
  - Zener Diode Arrays
  - Zener Single Diodes
  - Discrete Semiconductor refer to electronic components that are individual and separate from each other, as opposed to integrated circuits that contain multiple components on a single chip. These discrete components include diodes, transistors, thyristors, and other similar devices that perform specific functions in electronic circuits. They are commonly used in power supplies, amplifiers, and other electronic devices where precise control and regulation of electrical signals is required. Discrete Semiconductor Products are available in a variety of sizes, shapes, and specifications to meet the needs of different applications. They are widely used in the electronics industry and are essential components in many electronic devices.
- Capacitors
  - Capacitors
  - Aluminum Electrolytic Capacitors
  - Aluminum Polymer Capacitors
  - Capacitor Accessories
  - Capacitor Networks
  - Ceramic Capacitors
  - Ceramic Capacitors
  - Film Capacitors
  - Mica & PTFE Capacitors
  - Niobium Oxide Capacitors
  - Silicon Capacitors
  - Supercapacitors & EDLC
  - Tantalum Capacitors
  - Tantalum Polymer Capacitors
  - Thin Film Capacitors
  - Trimmers Variable
  - Capacitors are electronic components that store and release electrical energy. They consist of two conductive plates separated by an insulating material known as a dielectric. Capacitors are widely used in electronic circuits for various purposes, including energy storage, filtering, decoupling, timing, and coupling signals. They are available in different types, such as electrolytic capacitors, ceramic capacitors, and tantalum capacitors, each with unique characteristics suitable for different applications.
- Sensors
  - Sensors
  - CdS Cells
  - Accelerometers
  - Accessories
  - Amplifiers
  - Analog & Digital Sensor
  - Analog & Digital Sensors
  - Analog Optical Sensors
  - Angle & Linear Position Measuring Sensors
  - Camera Modules
  - Color Sensors
  - Current Sensors
  - Distance Measuring Sensors
  - Dust Sensors
  - Encoders
  - Float & Level Sensors
  - Flow Sensors
  - Force Sensors
  - Gas Sensors
  - Gyroscopes
  - Humidity Sensors
  - Image Sensors
  - IMUs
  - Inclinometers
  - IrDA Transceiver Modules
  - Junction Blocks
  - Logic Optical Sensors
  - Logic Photo Detectors
  - Logic Photointerrupters
  - LVDT Transducers
  - Magnetic Compass Sensors Modules
  - Magnetic Linear Sensors ICs
  - Magnetic Position Sensors Modules
  - Magnetic Switches
  - Mechanical Temperature Sensors
  - Multi Purpose Magnets
  - Multifunction
  - NTC Thermistors
  - Occupancy Sensors
  - Optical Motion Sensors
  - Optical Sensors Remote Receiver
  - Photodiodes
  - Photoelectric Sensors
  - Phototransistors
  - Proximity Sensors
  - PTC Thermistors
  - RTD
  - Sensor Cable Accessories
  - Sensor Cable Assemblies
  - Sensor Matched Magnets
  - Shock Sensors
  - Solar Cells
  - Solid State Thermostats
  - Specialized Sensors
  - Strain Gauges
  - Thermocouple Temperature Sensors
  - Tilt Switch Sensors
  - Touch Sensors
  - Transducers
  - Transistor Optical Sensors
  - Ultrasonic Receivers
  - UV Sensors
  - Vibration Sensors
  - Sensors are devices that detect and measure physical or environmental parameters and convert them into electrical signals. They enable the acquisition of real-world data for monitoring, control, and feedback purposes. Sensors can detect variables such as temperature, pressure, light, motion, proximity, and many others. They find application in diverse fields, including automotive systems, consumer electronics, industrial automation, healthcare, and environmental monitoring.
- Resistors
  - Resistors
  - Chassis Mount Resistors
  - Chip SMD Resistors
  - Chip SMD Resistors
  - Resistor Accessories
  - Resistor Arrays
  - Specialized Resistors
  - Through Hole Resistors
  - Resistors are passive electronic components designed to impede the flow of electric current in a circuit. They are used to control current levels, divide voltage, and limit power dissipation. Resistors are available in various types, including fixed resistors, variable resistors (potentiometers), and specialized resistors for specific applications such as high power or precision requirements. They are fundamental components in electronic circuits, playing roles in voltage regulation, signal conditioning, and impedance matching.
- Isolators
  - Isolators
  - Digital Isolators
  - Isolated Gate Drivers
  - Logic Optoisolators
  - Photovoltaic Optoisolators
  - Specialized Isolators
  - Triac Optoisolators
  - Isolators, also known as isolation devices or isolating components, are electronic components designed to electrically separate or isolate different parts of a circuit or system. They provide protection by preventing unwanted electrical currents, noise, or interference from affecting sensitive components or systems. Isolators are commonly used in applications where electrical isolation is crucial, such as power supplies, communication systems, motor control, and industrial automation. They ensure reliable operation, safety, and protection from electrical disturbances or faults.
- Board Mount Power Supplies
  - Board Mount Power Supplies
  - Board Mount AC DC Converters
  - Board Mount Accessories
  - Board Mount DC DC Converters
  - Off-board LED Drivers
  - Box and enclosure products refer to electronic components that are designed to protect and house electronic devices. These products come in a variety of shapes and sizes, and are typically made from materials such as plastic, metal, or fiberglass. Box and enclosure products are essential for protecting electronic components from environmental factors such as dust, moisture, and temperature fluctuations. They also provide a secure and organized way to store and transport electronic devices. Box and enclosure products are commonly used in industries such as telecommunications, aerospace, and automotive, as well as in consumer electronics.
- RF/IF & RFID
  - RF/IF & RFID
  - Attenuators
  - Balun
  - RF Accessories
  - RF Amplifiers
  - RF Antennas
  - RF Boards
  - RF Demodulators
  - RF Detectors
  - RF Directional Coupler
  - RF Front End
  - RF Misc ICs and Modules
  - RF Mixers
  - RF Modulators
  - RF Multiplexers
  - RF Power Controller ICs
  - RF Power Dividers
  - RF Receivers
  - RF Shields
  - RF Switches
  - RF Transceiver ICs
  - RF Transceiver Modules
  - RF Transmitter
  - RF Transmitters
  - RFI & EMI Contacts
  - RFI & EMI Materials
  - RFID Accessories
  - RFID Antennas
  - RFID Boards
  - RFID ICs
  - RFID Reader Modules
  - RFID Tags
  - RF power dividers/splitters are electronic components that are used to divide or split an incoming RF signal into multiple output signals. These components are commonly used in communication systems, such as radio and television broadcasting, as well as in radar and satellite communication systems. RF power dividers/splitters are designed to maintain signal integrity and minimize signal loss, ensuring that each output signal is of equal strength and quality. They come in various configurations, including 2-way, 3-way, 4-way, and 8-way, and can be used in both indoor and outdoor applications. RF power dividers/splitters are essential components in any RF system that requires signal distribution.
- Circuit Protection
  - Circuit Protection
  - Circuit Breakers
  - Circuit Protection Accessories
  - Electrical Fuses
  - Fuseholders
  - Fuses
  - GDT
  - GFCI
  - ICL
  - Lighting Protection
  - PTC Resettable Fuses
  - Surge Suppression ICs
  - Thermal Fuses
  - TVS Diodes
  - TVS Mixed Technology
  - TVS SPDs
  - TVS Thyristors
  - TVS Varistors
  - Circuit protection is a crucial aspect of electronic components classification. It refers to the measures taken to prevent damage to electronic circuits due to overvoltage, overcurrent, or short circuits. Circuit protection devices such as fuses, circuit breakers, surge protectors, and voltage regulators are used to safeguard electronic components from damage caused by power surges, lightning strikes, and other electrical disturbances. These devices are designed to interrupt the flow of current when the voltage or current exceeds a safe level, thereby protecting the circuit and preventing damage to the electronic components. Circuit protection is essential for ensuring the reliability and longevity of electronic devices and systems.
- Crystals
  - Crystals
  - Crystals
  - Crystals Accessories
  - Oscillators
  - Pin Configurable Oscillators
  - Programmable Oscillators
  - Resonators
  - Stand Alone Programmers
  - Voltage Controlled Oscillators
  - Crystals, in the context of electronics, refer to quartz crystals or other similar crystalline structures used as precise timing references or frequency-determining elements. These crystals exhibit a phenomenon called piezoelectricity, which allows them to generate a stable and accurate electrical signal when subjected to mechanical stress or voltage. Crystals are extensively used in oscillators
- Inductors
  - Inductors
  - Adjustable Inductors
  - Delay Lines
  - Fixed Inductors
  - Signal Transformers
  - Wireless Charging Coils
  - Inductors are passive electronic components that store electrical energy in the form of a magnetic field. They are typically made of a coil of wire wound around a core material and are used in various electrical circuits and systems. Inductors resist changes in current flow and are commonly employed in filtering, energy storage, impedance matching, and signal conditioning applications. They play a vital role in applications such as power supplies, radio frequency (RF) circuits, motor control, and electromagnetic compatibility (EMC) solutions.
- Filters
  - Filters
  - Cable Ferrites
  - Ceramic Filters
  - Common Mode Chokes
  - DSL Filters
  - EMI/RFI Filters
  - Feed Through Capacitors
  - Ferrite Beads and Chips
  - Ferrite Disks and Plates
  - Filters Accessories
  - Helical Filters
  - Monolithic Crystals
  - Power Line Filter Modules
  - RF Filters
  - SAW Filters
  - Filters are electronic components designed to selectively allow or block certain frequencies or ranges of frequencies in a signal or waveform. They are used to remove unwanted noise, interference, or specific frequency components, and to shape or modify the frequency response of a circuit or system. Filters can be classified into different types, such as low-pass, high-pass, band-pass, and band-stop filters, each serving specific purposes in applications ranging from audio and communication systems to power electronics and signal processing.
- View All

Items : %s%s

DC to DC converter

Name	Manufacturer	Quantity	Datasheet	Factory Lead Time	Lifecycle Status	Mount	Packaging	Published	Series	Pbfree Code	Part Status	Moisture Sensitivity Level (MSL)	Number of Terminations	ECCN Code	Max Operating Temperature	Min Operating Temperature	Operating Supply Voltage	Length	RoHS Status	Lead Free	Radiation Hardening	Number of Pins	Additional Feature	Package / Case	Max Supply Voltage	REACH SVHC	Reach Compliance Code	Frequency	Height	Width	Thickness	Mounting Type	Weight	Operating Temperature	Technology	Height Seated (Max)	Max Frequency	Nominal Input Voltage	JESD-609 Code	Terminal Finish	Terminal Position	Terminal Form	Peak Reflow Temperature (Cel)	Supply Voltage	Time@Peak Reflow Temperature-Max (s)	Base Part Number	Pin Count	Output Type	Surface Mount	Terminal Pitch	JESD-30 Code	Number of Channels	Subcategory	Qualification Status	Output Voltage	Output Current-Max	Number of Outputs	Output Current	Voltage - Output	Output Power	Input Voltage-Nom	Analog IC - Other Type	Supply Current-Max (Isup)	Supplier Device Package	Rise Time	Fall Time (Typ)	Output Configuration	Control Mode	Switching Frequency	Input Voltage (Min)	Input Voltage (Max)	Function	Control Technique	Switcher Configuration	Topology	Max Duty Cycle	Voltage - Supply (Vcc/Vdd)	Control Features	Frequency - Switching	Synchronous Rectifier	Number of Output Phases	Serial Interfaces	Output Phases	Duty Cycle (Max)	Clock Sync
LT3840IFE#PBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	8 Weeks			Tube	2014			Active	1 (Unlimited)	28	EAR99				9.7mm	ROHS3 Compliant					28-TSSOP (0.173, 4.40mm Width) Exposed Pad						4.4mm		Surface Mount		-40°C~125°C TJ					e3	Matte Tin (Sn)	DUAL	GULL WING	NOT SPECIFIED		NOT SPECIFIED	LT3840		Transistor Driver	YES	0.65mm	R-PDSO-G28						1					SWITCHING CONTROLLER					Positive or Negative	CURRENT-MODE		2.5V	60V	Step-Down			Buck		2.5V~60V	Enable, Frequency Control, Power Good, Soft Start, Tracking	50kHz~1MHz	Yes				99%
LTC3721EGN-1#TRPBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	8 Weeks	PRODUCTION (Last Updated: 3 weeks ago)		Tape & Reel (TR)	2004			Active	1 (Unlimited)	16	EAR99				4.89mm	ROHS3 Compliant	Lead Free		16		16-SSOP (0.154, 3.90mm Width)				1MHz		3.899mm		Surface Mount		-40°C~85°C TA		1.75mm			e3	Matte Tin (Sn)	DUAL	GULL WING	260		30	LTC3721		Transistor Driver	YES	0.635mm					5V		2	1.5A			9.5V	SWITCHING CONTROLLER			10ns	10 ns	Positive, Isolation Capable	CURRENT-MODE				Step-Up/Step-Down	PULSE WIDTH MODULATION		Push-Pull		Up to 10V	Current Limit, Soft Start	Up to 1MHz	No				50%
LT3741EFE-1#TRPBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	10 Weeks			Tape & Reel (TR)	2013			Active	1 (Unlimited)	20	EAR99				6.5mm	ROHS3 Compliant				OUTPUT VOLTAGE RANGE 0 VOLT TO 34 VOLT	20-TSSOP (0.173, 4.40mm Width) Exposed Pad						4.4mm		Surface Mount		-40°C~125°C TJ					e3	Matte Tin (Sn)	DUAL	GULL WING	NOT SPECIFIED		NOT SPECIFIED	LT3741		Transistor Driver	YES	0.65mm	R-PDSO-G20						1				12V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		6V	36V	Step-Down	PULSE WIDTH MODULATION		Buck		6V~36V	Enable, Frequency Control, Soft Start	200kHz~1MHz	Yes
UC3856DW	Texas Instruments	RFQ Min: 1 Mult: 1	download	6 Weeks	ACTIVE (Last Updated: 2 days ago)		Tube			yes	Active	2 (1 Year)	16	EAR99				10.3mm	ROHS3 Compliant	Lead Free	No	16		16-SOIC (0.295, 7.50mm Width)		No SVHC		1MHz	2.65mm	7.5mm	2.35mm	Surface Mount	473.692182mg	0°C~70°C TA	BICMOS			40V	e4	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	GULL WING	260	15V		UC3856		Transistor Driver	YES				Switching Regulator or Controllers		13.1V		2	500mA			15V	SWITCHING CONTROLLER			40ns	40 ns	Positive	CURRENT-MODE				Step-Up, Step-Down, Step-Up/Step-Down	PULSE WIDTH MODULATION		Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull	50 %	7V~40V	Enable, Frequency Control, Soft Start	200kHz	Yes			1	47%
LTC1538CG-AUX#TRPBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	8 Weeks			Tape & Reel (TR)	1996			Active	1 (Unlimited)	28	EAR99					ROHS3 Compliant					28-SSOP (0.209, 5.30mm Width)						5.3mm		Surface Mount		0°C~70°C TA	CMOS				e3	Matte Tin (Sn)	DUAL	GULL WING	260		30	LTC1538		Transistor Driver	YES	0.65mm			Switching Regulator or Controllers		5V	2A	2				15V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		3.5V	36V	Step-Down	PULSE WIDTH MODULATION	PUSH-PULL	Buck		3.5V~30V	Enable, Power on Reset, Soft Start	Up to 400kHz	Yes			1	99%	No
AP3581AMP-G1	Diodes Incorporated	RFQ Min: 1 Mult: 1	download				Tube				Obsolete	1 (Unlimited)							ROHS3 Compliant					8-SOIC (0.154, 3.90mm Width) Exposed Pad								Surface Mount		-40°C~85°C TA														Transistor Driver									1							8-PSOP			Positive					Step-Down			Buck		4.5V~13.2V	Enable, Phase Control	300kHz	Yes			1	80%	No
MAX16992AUBB/V+	Maxim Integrated	RFQ Min: 1 Mult: 1	download	6 Weeks		Surface Mount	Tube	2015	Automotive, AEC-Q100	yes	Active	1 (Unlimited)	10	EAR99			42V	3mm	ROHS3 Compliant			10		10-TFSOP, 10-MSOP (0.118, 3.00mm Width)				2.5MHz		3mm		Surface Mount		-40°C~125°C TJ	BICMOS						DUAL	GULL WING				MAX16992		Transistor Driver		0.5mm			Switching Regulator or Controllers		36V		1	6A			14V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		4.5V		Step-Up, Step-Up/Step-Down	PULSE WIDTH MODULATION		Boost, SEPIC	85 %	4.5V~36V	Current Limit, Enable, Frequency Control, Power Good	1MHz~2.5MHz	No					Yes
S-8338ABGB-T8T1G	ABLIC U.S.A. Inc.	RFQ Min: 1 Mult: 1	download	12 Weeks			Tape & Reel (TR)			yes	Not For New Designs	1 (Unlimited)	8	EAR99				4.4mm	RoHS Compliant					8-TSSOP (0.173, 4.40mm Width)						3mm		Surface Mount		-40°C~85°C TA	CMOS				e6	TIN BISMUTH	DUAL	GULL WING	260		10			Transistor Driver	YES	0.65mm	R-PDSO-G8						1				3.3V	SWITCHING CONTROLLER					Positive	VOLTAGE-MODE			6V	Step-Up	PULSE WIDTH MODULATION	SINGLE	Boost		1.8V~6V	Current Limit, Enable, Frequency Control	257.4kHz~1.134MHz	No				88.5%
LTC1148HVCN-3.3#PBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	16 Weeks			Tube				Active	1 (Unlimited)	14	EAR99					ROHS3 Compliant					14-DIP (0.300, 7.62mm)						7.62mm		Surface Mount		0°C~70°C TA	CMOS	3.937mm			e3	Matte Tin (Sn)	DUAL	THROUGH-HOLE	260		40	LTC1148		Transistor Driver	NO	2.54mm			Switching Regulator or Controllers		3.3V	0.05A	1				10V	SWITCHING CONTROLLER	2.3mA				Positive	CURRENT-MODE		4V		Step-Down	CONSTANT OFF TIME	PUSH-PULL	Buck		3.5V~20V	Current Limit, Enable	Up to 250kHz	Yes				100%	No
MAX15004AAUE/V+T	Maxim Integrated	RFQ Min: 1 Mult: 1	download	6 Weeks		Surface Mount	Tape & Reel (TR)	2002	Automotive, AEC-Q100	yes	Active	1 (Unlimited)	16	EAR99			40V		ROHS3 Compliant					16-TSSOP (0.173, 4.40mm Width) Exposed Pad								Surface Mount		-40°C~125°C TJ	BICMOS		1MHz				DUAL	GULL WING				MAX15004		Transistor Driver		0.635mm			Switching Regulator or Controllers		100V		1	1A				SWITCHING CONTROLLER					Positive, Isolation Capable	CURRENT-MODE				Step-Up, Step-Up/Step-Down			Boost, Flyback, SEPIC	50 %	4.5V~40V	Enable, Frequency Control, Soft Start	15kHz~500kHz	No					Yes
ISL68127IRAZ-T7A	Intersil (Renesas Electronics America)	RFQ Min: 1 Mult: 1	download	5 Weeks			Cut Tape	2014				3							RoHS Compliant									1MHz											e3	Matte Tin (Sn) - annealed							48												3.05V			SWITCHING CONTROLLER
ZL2004ALNN-01	Renesas Electronics America	RFQ Min: 1 Mult: 1	download				Tray				Obsolete	2 (1 Year)	32					5mm	ROHS3 Compliant					32-VFQFN Exposed Pad						5mm		Surface Mount		0°C~65°C TA		0.9mm			e3	Matte Tin (Sn)	QUAD	NO LEAD	NOT SPECIFIED		NOT SPECIFIED	ZL2004		PWM Signal	YES	0.5mm	S-PQCC-N32						1				8.6V	SWITCHING CONTROLLER					Positive			8V		Step-Down	PULSE WIDTH MODULATION		Buck		8V~10V	Current Limit, Enable, Power Good, Soft Start, Tracking	400kHz			I2C, PMBus, SMBus			Yes
PXM1200CDMG013XTMA1	Infineon Technologies	RFQ Min: 1 Mult: 1					Tape & Reel (TR)				Discontinued	3 (168 Hours)							ROHS3 Compliant
MAX651ESA+	Maxim Integrated	RFQ Min: 1 Mult: 1	download				Tube	1999		yes	Obsolete	1 (Unlimited)	8	EAR99				4.9mm	ROHS3 Compliant			8		8-SOIC (0.154, 3.90mm Width)						3.9mm		Surface Mount		-40°C~85°C TA	BICMOS				e3	Matte Tin (Sn)	DUAL	GULL WING	260			MAX651		Transistor Driver	YES						3.3V		1					SWITCHING CONTROLLER					Positive	CURRENT-MODE		4V		Step-Down	PULSE FREQUENCY MODULATION		Buck		4V~16.5V	Enable	Up to 300kHz	No
LTC1266AIS#TRPBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	16 Weeks			Tape & Reel (TR)	2000			Active	1 (Unlimited)	16	EAR99				9.9mm	ROHS3 Compliant					16-SOIC (0.154, 3.90mm Width)						3.9mm		Surface Mount		-40°C~85°C TA	CMOS				e3	Matte Tin (Sn)	DUAL	GULL WING	260		30	LTC1266		Transistor Driver	YES				Switching Regulator or Controllers			0.05A	1				10V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		3.5V		Step-Down	CONSTANT OFF TIME	PUSH-PULL	Buck		3.5V~18V	Enable	Up to 400kHz	Yes				100%	No
TL3842PG4	Texas Instruments	RFQ Min: 1 Mult: 1		6 Weeks			Tube				Active	1 (Unlimited)							ROHS3 Compliant					8-DIP (0.300, 7.62mm)								Through Hole		0°C~70°C TA												TL3842		Transistor Driver									1										Positive					Step-Up, Step-Up/Step-Down			Boost, Flyback, Forward		10V~30V	Frequency Control	Up to 500kHz	No				97%
LTC3880IUJ-1#PBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	8 Weeks	PRODUCTION (Last Updated: 2 weeks ago)		Tube	2011	PolyPhase®		Active	1 (Unlimited)	40	EAR99				6mm	ROHS3 Compliant	Lead Free		40		40-WFQFN Exposed Pad						6mm		Surface Mount		-40°C~125°C TJ	CMOS	0.8mm	1MHz		e3	Matte Tin (Sn)	QUAD	NO LEAD	NOT SPECIFIED		NOT SPECIFIED	LTC3880		Transistor Driver	YES	0.5mm		1		Not Qualified	5.5V		2	30A			12V	DUAL SWITCHING CONTROLLER					Positive	CURRENT-MODE	250kHz	4.5V		Step-Down	PULSE WIDTH MODULATION	BOOST	Buck		4.5V~24V	Enable, Frequency Control		Yes		I2C, PMBus
LV5725JAZ-ZH	ON Semiconductor	RFQ Min: 1 Mult: 1					Tube	2015			Obsolete	3 (168 Hours)												16-LSSOP (0.173, 4.40mm Width)								Surface Mount		-40°C~85°C TA														Transistor Driver									1										Positive					Step-Down			Buck		4.5V~50V	Current Limit, Enable, Frequency Control, Power Good, Soft Start	50kHz~500kHz	Yes				92%
LTC3809IDD-1#PBF	Linear Technology / Analog Devices	RFQ Min: 1 Mult: 1	download	8 Weeks	PRODUCTION (Last Updated: 3 months ago)		Tube	2008			Active	1 (Unlimited)	10	EAR99				3mm	ROHS3 Compliant			10		10-WFDFN Exposed Pad						3mm		Surface Mount		-40°C~85°C TA	CMOS	0.8mm	600kHz		e3	Matte Tin (Sn)	QUAD		260		30	LTC3809		Transistor Driver	YES	0.5mm			Switching Regulator or Controllers		9.8V		1	5A			4.2V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		2.75V		Step-Down	PULSE WIDTH MODULATION	PUSH-PULL	Buck		2.75V~9.8V	Enable, Soft Start, Tracking	550kHz	Yes				100%	No
S-8358F60MC-MLTT2G	ABLIC U.S.A. Inc.	RFQ Min: 1 Mult: 1	download				Tape & Reel (TR)			yes	Not For New Designs	1 (Unlimited)	5	EAR99				2.9mm	RoHS Compliant				ALSO HAS CONTROL TECHNIQUE OF PFM	SC-74A, SOT-753								Surface Mount		-40°C~85°C TA	CMOS						DUAL	GULL WING	260		10			Transistor Driver	YES	0.95mm	R-PDSO-G5				6V	0.08A	1				3.3V	SWITCHING CONTROLLER					Positive			0.9V		Step-Up	PULSE WIDTH MODULATION	SINGLE	Boost		0.9V~10V	Enable	300kHz	No				85%
XC9220A093MR-G	Torex Semiconductor Ltd	RFQ Min: 1 Mult: 1	download	10 Weeks			Tape & Reel (TR)		XC9220		Active	1 (Unlimited)	5	EAR99				2.9mm	ROHS3 Compliant					SC-74A, SOT-753								Surface Mount		-40°C~85°C TA					e3	Tin (Sn)	DUAL	GULL WING	260		10			Transistor Driver	YES	0.95mm	R-PDSO-G5		Switching Regulator or Controllers			3A	1				5V	SWITCHING CONTROLLER					Positive	VOLTAGE-MODE		2.8V		Step-Down	PULSE WIDTH MODULATION		Buck		2.8V~16V	Enable, Soft Start	300kHz	No				100%
LX1682CDM	Microsemi	RFQ Min: 1 Mult: 1						2005		yes	Obsolete	2 (1 Year)	8	EAR99				4.9mm	RoHS Compliant					8-SOIC (0.154, 3.90mm Width)			compliant			3.9mm		Surface Mount		0°C~70°C TA		2mm			e3	Matte Tin (Sn)	DUAL	GULL WING	260		40	LX1682		Transistor Driver	YES		R-PDSO-G8					1A	1				5V	SWITCHING CONTROLLER					Positive	VOLTAGE-MODE		4.4V	5.25V	Step-Down	PULSE WIDTH MODULATION	PUSH-PULL	Buck		5V	Current Limit, Soft Start	190kHz	Yes					No
LM5025MTCX	Texas Instruments	RFQ Min: 1 Mult: 1				Surface Mount	Tape & Reel (TR)			no	Discontinued	1 (Unlimited)	16	EAR99				5mm	Non-RoHS Compliant	Contains Lead		16		16-TSSOP (0.173, 4.40mm Width)						4.4mm		Surface Mount		-40°C~125°C TJ			1MHz		e0	Tin/Lead (Sn/Pb)	DUAL	GULL WING	260			LM5025		Transistor Driver		0.65mm			Switching Regulator or Controllers				2	1A		300W	10V	SWITCHING CONTROLLER			20ns	15 ns	Positive, Isolation Capable	VOLTAGE-MODE		8V		Step-Up/Step-Down	PULSE WIDTH MODULATION	PUSH-PULL	Forward Converter	80 %	8V~15V	Dead Time Control, Frequency Control, Ramp, Soft Start	200kHz~580kHz	No			1		Yes
LX1555CDM	Microsemi	RFQ Min: 1 Mult: 1	download		OBSOLETE (Last Updated: 1 month ago)		Tube	1997			Obsolete	2 (1 Year)	8	EAR99					RoHS Compliant	Lead Free				8-SOIC (0.154, 3.90mm Width)				400kHz		3.875mm		Surface Mount		0°C~70°C TA	BIPOLAR	2mm			e3	MATTE TIN	DUAL	GULL WING	260		40	LX155*		Transistor Driver	YES		R-PDSO-G8		Switching Regulator or Controllers			1A	1				15V	SWITCHING CONTROLLER					Positive	CURRENT-MODE			25V	Step-Up, Step-Down	PULSE WIDTH MODULATION	SINGLE	Buck, Boost		7.6V~30V	Frequency Control		Yes				48%	No
UC3845BD1	Rochester Electronics, LLC	RFQ Min: 1 Mult: 1	download				Tube			yes	Obsolete	1 (Unlimited)	8					4.9mm	Non-RoHS Compliant					8-SOIC (0.154, 3.90mm Width)						3.9mm		Surface Mount		0°C~70°C TA	BIPOLAR				e0	TIN LEAD	DUAL	GULL WING	240		30			Transistor Driver	YES		R-PDSO-G8			COMMERCIAL		1A	1				15V	SWITCHING CONTROLLER					Positive or Negative, Isolation Capable	CURRENT-MODE			25V	Step-Up, Step-Up/Step-Down	PULSE WIDTH MODULATION	SINGLE	Boost, Flyback		7.6V~30V	Frequency Control	500kHz	No				48%
S-8521F18MC-BPDT2U	ABLIC U.S.A. Inc.	RFQ Min: 1 Mult: 1	download	18 Weeks			Tape & Reel (TR)				Active	1 (Unlimited)	5	EAR99				2.9mm	RoHS Compliant				ALSO OPERATES AS PFM	SC-74A, SOT-753								Surface Mount		-40°C~85°C TA	CMOS				e3	TIN	DUAL	GULL WING						Transistor Driver	YES	0.95mm	R-PDSO-G5				1.8V	0.05A	1				2.5V	SWITCHING CONTROLLER					Positive			2.5V		Step-Down	PULSE WIDTH MODULATION	SINGLE	Buck		2.5V~16V	Enable	300kHz	No				100%
UCC2585MG4	Texas Instruments	RFQ Min: 1 Mult: 1	download			Surface Mount	Tube				Obsolete	2 (1 Year)	16	EAR99			5V	4.9mm	ROHS3 Compliant	Lead Free		16		16-SSOP (0.154, 3.90mm Width)						3.9mm		Surface Mount		-40°C~85°C TA	BICMOS		485kHz				DUAL	GULL WING				UCC2585		Transistor Driver		0.635mm			Switching Regulator or Controllers		900mV	1A	1				3.3V	SWITCHING CONTROLLER					Positive	VOLTAGE-MODE		3V	6.3V	Step-Down	PULSE WIDTH MODULATION	PUSH-PULL	Buck		3V~5.5V	Current Limit, Enable, Frequency Control, Soft Start	500kHz	Yes				100%	No
ISL6560CB	Rochester Electronics	RFQ Min: 1 Mult: 1	download				Tube			no	Obsolete	1 (Unlimited)	16	EAR99				9.9mm	Non-RoHS Compliant					16-SOIC (0.154, 3.90mm Width)						3.9mm		Surface Mount		0°C~70°C TA		1.75mm			e0	TIN LEAD	DUAL	GULL WING	240		30			PWM Signal	YES		R-PDSO-G16						2				12V	SWITCHING CONTROLLER					Positive	CURRENT-MODE		10.8V		Step-Down	PULSE WIDTH MODULATION	PHASE-SHIFT	Buck		10.8V~13.2V	Frequency Control, Power Good	Up to 2MHz					50%	No
ISL6522CRZ-T	Renesas Electronics America	RFQ Min: 1 Mult: 1	download	5 Weeks			Tape & Reel (TR)				Active	3 (168 Hours)	16	EAR99				5mm	ROHS3 Compliant					16-VQFN Exposed Pad						5mm		Surface Mount		0°C~70°C TA							QUAD					ISL6522		Transistor Driver	YES	0.8mm							1				12V	SWITCHING CONTROLLER					Positive	VOLTAGE-MODE				Step-Down	PULSE WIDTH MODULATION		Buck		10.8V~13.2V	Enable, Frequency Control, Phase Control, Soft Start	200kHz	Yes				100%	No
MIC38C45-1YM-TR	Microchip Technology	RFQ Min: 1 Mult: 1	download	9 Weeks		Surface Mount	Tape & Reel (TR)				Active	1 (Unlimited)			85°C	-40°C			ROHS3 Compliant	Lead Free		14		14-SOIC (0.154, 3.90mm Width)	20V							Surface Mount		-40°C~85°C TA			500kHz									MIC38C45		Transistor Driver									1	500A						14-SOIC	40ns	30 ns	Positive, Isolation Capable					Step-Up, Step-Down, Step-Up/Step-Down			Buck, Boost, Flyback, Forward Converter	50 %	7.6V~20V	Frequency Control	500kHz	Yes	1		1	50%	No

LT3840IFE#PBF Linear Technology / Analog Devices
28 Terminals 2.5V~60V LT3840 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 50kHz~1MHz Transistor Driver

Price: 0.0000
RFQ
LTC3721EGN-1#TRPBF Linear Technology / Analog Devices
16 Terminals Up to 10V 16-Pin LTC3721 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs Up to 1MHz Transistor Driver

Price: 0.0000
RFQ
LT3741EFE-1#TRPBF Linear Technology / Analog Devices
20 Terminals 6V~36V LT3741 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 200kHz~1MHz Transistor Driver

Price: 0.0000
RFQ
UC3856DW Texas Instruments
16 Terminals 7V~40V 16-Pin UC3856 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs 200kHz Transistor Driver

Price: 0.0000
RFQ
LTC1538CG-AUX#TRPBF Linear Technology / Analog Devices
28 Terminals 3.5V~30V LTC1538 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs Up to 400kHz Transistor Driver

Price: 0.0000
RFQ
AP3581AMP-G1 Diodes Incorporated
4.5V~13.2V DC to DC converter IC1 Outputs 300kHz Transistor Driver

Price: 0.0000
RFQ
MAX16992AUBB/V+ Maxim Integrated
10 Terminals 4.5V~36V 10-Pin MAX16992 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 1MHz~2.5MHz Transistor Driver

Price: 0.0000
RFQ
S-8338ABGB-T8T1G ABLIC U.S.A. Inc.
8 Terminals 1.8V~6V DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 257.4kHz~1.134MHz Transistor Driver

Price: 0.0000
RFQ
LTC1148HVCN-3.3#PBF Linear Technology / Analog Devices
14 Terminals 3.5V~20V LTC1148 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Up to 250kHz Transistor Driver

Price: 0.0000
RFQ
MAX15004AAUE/V+T Maxim Integrated
16 Terminals 4.5V~40V MAX15004 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 15kHz~500kHz Transistor Driver

Price: 0.0000
RFQ
ISL68127IRAZ-T7A Intersil (Renesas Electronics America)
DC to DC converter ICSWITCHING CONTROLLER

Price: 0.0000
RFQ
ZL2004ALNN-01 Renesas Electronics America
32 Terminals 8V~10V ZL2004 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 400kHz PWM Signal

Price: 0.0000
RFQ
PXM1200CDMG013XTMA1 Infineon Technologies
DC to DC converter IC

Price: 0.0000
RFQ
MAX651ESA+ Maxim Integrated
8 Terminals 4V~16.5V 8-Pin MAX651 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Up to 300kHz Transistor Driver

Price: 0.0000
RFQ
LTC1266AIS#TRPBF Linear Technology / Analog Devices
16 Terminals 3.5V~18V LTC1266 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Up to 400kHz Transistor Driver

Price: 0.0000
RFQ
TL3842PG4 Texas Instruments
10V~30V TL3842 DC to DC converter IC1 Outputs Up to 500kHz Transistor Driver

Price: 0.0000
RFQ
LTC3880IUJ-1#PBF Linear Technology / Analog Devices
40 Terminals 4.5V~24V 40-Pin LTC3880 DC to DC converter ICDUAL SWITCHING CONTROLLER 2 Outputs Transistor Driver

Price: 0.0000
RFQ
LV5725JAZ-ZH ON Semiconductor
4.5V~50V DC to DC converter IC1 Outputs 50kHz~500kHz Transistor Driver

Price: 0.0000
RFQ
LTC3809IDD-1#PBF Linear Technology / Analog Devices
10 Terminals 2.75V~9.8V 10-Pin LTC3809 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 550kHz Transistor Driver

Price: 0.0000
RFQ
S-8358F60MC-MLTT2G ABLIC U.S.A. Inc.
5 Terminals 0.9V~10V DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 300kHz Transistor Driver

Price: 0.0000
RFQ
XC9220A093MR-G Torex Semiconductor Ltd
5 Terminals 2.8V~16V DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 300kHz Transistor Driver

Price: 0.0000
RFQ
LX1682CDM Microsemi
8 Terminals 5V LX1682 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 190kHz Transistor Driver

Price: 0.0000
RFQ
LM5025MTCX Texas Instruments
16 Terminals 8V~15V 16-Pin LM5025 DC to DC converter ICSWITCHING CONTROLLER 2 Outputs 200kHz~580kHz Transistor Driver

Price: 0.0000
RFQ
LX1555CDM Microsemi
8 Terminals 7.6V~30V LX155* DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Transistor Driver

Price: 0.0000
RFQ
UC3845BD1 Rochester Electronics, LLC
8 Terminals 7.6V~30V DC to DC converter IC SWITCHING CONTROLLER 1 Outputs 500kHz Transistor Driver

Price: 0.0000
RFQ
S-8521F18MC-BPDT2U ABLIC U.S.A. Inc.
5 Terminals 2.5V~16V DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 300kHz Transistor Driver

Price: 0.0000
RFQ
UCC2585MG4 Texas Instruments
16 Terminals 3V~5.5V 16-Pin UCC2585 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 500kHz Transistor Driver

Price: 0.0000
RFQ
ISL6560CB Rochester Electronics
16 Terminals 10.8V~13.2V DC to DC converter ICSWITCHING CONTROLLER 2 Outputs Up to 2MHz PWM Signal

Price: 0.0000
RFQ
ISL6522CRZ-T Renesas Electronics America
16 Terminals 10.8V~13.2V ISL6522 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 200kHz Transistor Driver

Price: 0.0000
RFQ
MIC38C45-1YM-TR Microchip Technology
7.6V~20V 14-Pin MIC38C45 DC to DC converter IC1 Outputs 500kHz Transistor Driver

Price: 0.0000
RFQ