LM3402/LM3402HV Constant Current Buck Regulators

Texas Instruments LM3402/LM3402HV Constant Current Buck Regulators 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 735mA for step-down (Buck) regulators. Hysteretic control with controlled on-time is coupled with an external resistor. This allows the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel-connected arrays of LEDs. They can be of varying number and type, LED dimming by pulse width modulation (PWM) or broken/open LED protection. Low-power shutdown and thermal shutdown complete the feature set available with this device.

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Description Datasheet Availability Pricing (KRW) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Number of Outputs
Topology
Output Current
Package / Case
Supply Voltage - Max
Supply Voltage - Min
Operating Frequency
Output Voltage
Series
Minimum Operating Temperature
Maximum Operating Temperature
Packaging

Texas Instruments LED Lighting Driver ICs 42-V 0.5-A constant current buck LED dri A 926-LM3402MRX/NOPB
Datasheet
38,185In Stock
₩4,180.8
₩3,120
₩2,574
₩2,449.2
View
Min.: 1
Mult.: 1
1 Output Buck 500 mA SO-PowerPad-8 42 V 6 V 10 kHz to 1 MHz 40 V LM3402 - 40 C + 125 C Tube

Texas Instruments LED Lighting Driver ICs 75-V 0.5A constant c urrent buck LED dri A 926-LM3402HVMMX/NOPB
Datasheet
1,529In Stock
Cut Tape
₩4,446
₩3,322.8
₩3,042
₩2,730
Reel
₩2,386.8
View
MouseReel Available
Min.: 1
Mult.: 1
: 1,000
1 Output Buck 500 mA VSSOP-8 75 V 6 V 10 kHz to 1 MHz 73 V LM3402HV - 40 C + 125 C Reel, Cut Tape, MouseReel

Texas Instruments LED Lighting Driver ICs 0.5A CONSTANT CRNT B UCK REG A 926-LM340 A 926-LM3402MMX/NOPB
Datasheet
8,064In Stock
7,000Expected 3/20/2028
Cut Tape
₩4,180.8
₩3,120
₩2,854.8
₩2,558.4
Reel
₩2,308.8
View
MouseReel Available
Min.: 1
Mult.: 1
: 1,000
1 Output Buck 500 mA VSSOP-8 42 V 6 V 10 kHz to 1 MHz 40 V LM3402 - 40 C + 125 C Reel, Cut Tape, MouseReel

Texas Instruments LED Lighting Driver ICs 0.5A Constant Crnt B uck Reg A 926-LM340 A 926-LM3402HVMRX/NOPB
Datasheet
382In Stock
₩4,446
₩3,322.8
₩2,901.6
₩2,620.8
View
Min.: 1
Mult.: 1
1 Output Buck 500 mA SO-PowerPad-8 75 V 6 V 10 kHz to 1 MHz 73 V LM3402HV - 40 C + 125 C Tube

Texas Instruments LED Lighting Driver ICs 42-V 0.5-A constant current buck LED dri A 926-LM3402MR/NOPB
Datasheet
1,207In Stock
Cut Tape
₩3,556.8
₩2,636.4
₩2,418
₩2,152.8
Reel
₩1,794
View
MouseReel Available
Min.: 1
Mult.: 1
: 2,500
1 Output Buck 500 mA SO-PowerPad-8 42 V 6 V 10 kHz to 1 MHz 40 V LM3402 - 40 C + 125 C Reel, Cut Tape, MouseReel

Texas Instruments LED Lighting Driver ICs 75-V 0.5A constant c urrent buck LED dri A 926-LM3402HVMR/NOPB
Datasheet
209In Stock
Cut Tape
₩3,775.2
₩2,808
₩2,574
₩2,293.2
Reel
₩1,950
View
MouseReel Available
Min.: 1
Mult.: 1
: 2,500
1 Output Buck 500 mA SO-PowerPad-8 75 V 6 V 10 kHz to 1 MHz 73 V LM3402HV - 40 C + 125 C Reel, Cut Tape, MouseReel

Texas Instruments LED Lighting Driver ICs 75-V 0.5A constant c urrent buck LED dri A 926-LM3402HVMM/NOPB
Datasheet
Non-Stocked Lead-Time 20 Weeks
Reel
₩2,043.6
₩2,012.4
Min.: 3,500
Mult.: 3,500
: 3,500
1 Output 525 mA VSSOP-8 75 V 75 V 10 kHz to 1 MHz 200 mV to 40 V LM3402HV - 40 C + 125 C Reel

Texas Instruments LED Lighting Driver ICs 42-V 0.5-A constant current buck LED dri A 926-LM3402MM/NOPB
Datasheet
Non-Stocked Lead-Time 20 Weeks
Reel
₩1,809.6
₩1,747.2
Min.: 3,500
Mult.: 3,500
: 3,500
1 Output 525 mA VSSOP-8 42 V 42 V 10 kHz to 1 MHz 200 mV to 40 V LM3402 - 40 C + 125 C Reel