Integrated Circuits (ICs)

LM3402MR/NOPB

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42-V 0.5-A CONSTANT CURRENT BUCK LED DRIVER

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Search across all available documentation for this part.

DocumentsAN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)AN-1585 LM3402 and LM3404 High Power PSOP-8 Evaluation Board (Rev. C)+8

Integrated Circuits (ICs)

LM3402MR/NOPB

Active

Texas Instruments

42-V 0.5-A CONSTANT CURRENT BUCK LED DRIVER

Deep-Dive with AI

DocumentsAN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A)AN-1585 LM3402 and LM3404 High Power PSOP-8 Evaluation Board (Rev. C)+8

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM3402MR/NOPB

Applications	Lighting
Current - Output / Channel	500 mA
Dimming	PWM
Frequency	1 MHz
Internal Switch(s)	True
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	8-PowerSOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SO PowerPad
Topology	Step-Down (Buck)
Type	DC DC Regulator
Voltage - Output	40 V
Voltage - Supply (Max) [Max]	42 V
Voltage - Supply (Min) [Min]	6 V

LM3402HV Series

42-V 0.5-A constant current buck LED driver

Part	Applications	Number of Outputs	Frequency	Voltage - Supply (Min) [Min]	Supplier Device Package	Current - Output / Channel	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [y]	Package / Case [x]	Package / Case	Dimming	Topology	Type	Mounting Type	Voltage - Supply (Max) [Max]	Voltage - Output	Package / Case [custom]	Package / Case	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]	Utilized IC / Part	Features	Supplied Contents
Texas Instruments LM3402MR/NOPB	Lighting	1	1 MHz	6 V	8-SO PowerPad	500 mA	-40 °C	125 ¯C	3.9 mm	0.154 in	8-PowerSOIC	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	42 V	40 V
Texas Instruments LM3402HVMMX/NOPB	Lighting	1	1 MHz	6 V		500 mA	-40 °C	125 ¯C			8-MSOP 8-TSSOP	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	75 V	73 V	0.118 in	3 mm
Texas Instruments LM3402HVMMX	Lighting	1	1 MHz	6 V		500 mA	-40 °C	125 ¯C			8-MSOP 8-TSSOP	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	75 V	73 V	0.118 in	3 mm
Texas Instruments LM3402HVMRX/NOPB	Lighting	1	1 MHz	6 V	8-SO PowerPad	500 mA	-40 °C	125 ¯C	3.9 mm	0.154 in	8-PowerSOIC	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	75 V	73 V
Texas Instruments LM3402MM/NOPB	Lighting	1	1 MHz	6 V		500 mA	-40 °C	125 ¯C			8-MSOP 8-TSSOP	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	42 V	40 V	0.118 in	3 mm
Texas Instruments LM3402HVEVAL/NOPB						500 mA											4 V			Non-Isolated	1	6 V	75 V	LM3402	Dimmable	Board(s)
Texas Instruments LM3402HVMR/NOPB	Lighting	1	1 MHz	6 V	8-SO PowerPad	500 mA	-40 °C	125 ¯C	3.9 mm	0.154 in	8-PowerSOIC	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	75 V	73 V
Texas Instruments LM3402MM	Lighting	1	1 MHz	6 V		500 mA	-40 °C	125 ¯C			8-MSOP 8-TSSOP	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	42 V	40 V	0.118 in	3 mm
Texas Instruments LM3402MRX/NOPB	Lighting	1	1 MHz	6 V	8-SO PowerPad	500 mA	-40 °C	125 ¯C	3.9 mm	0.154 in	8-PowerSOIC	PWM	Step-Down (Buck)	DC DC Regulator	Surface Mount	42 V	40 V
Texas Instruments LM3402EVAL/NOPB						500 mA											4 V			Non-Isolated	1	6 V	42 V	LM3402	Dimmable	Board(s)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.57
		10	$ 1.41
		95	$ 1.13
		285	$ 1.06
		570	$ 0.94
Texas Instruments	TUBE	1	$ 1.68
		100	$ 1.39
		250	$ 0.99
		1000	$ 0.75

Description

General part information

LM3402HV Series

The LM3402/HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 735 mA (typical) for step-down (Buck) regulators. Hysteretic control with controlled ON-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.