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 (PEN) 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
S/ 11.83
S/ 8.87
S/ 7.32
S/ 6.97
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-LM3402HVMR/NOPB
Datasheet
888In Stock
Cut Tape
S/ 9.42
S/ 7.01
S/ 6.42
S/ 5.72
Reel
S/ 4.87
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-LM3402HVMMX/NOPB
Datasheet
1,369In Stock
Cut Tape
S/ 11.09
S/ 8.29
S/ 7.59
S/ 6.81
Reel
S/ 5.96
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
7,879In Stock
7,000Expected 3/20/2028
Cut Tape
S/ 11.99
S/ 8.91
S/ 8.17
S/ 7.32
Reel
S/ 6.42
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 42-V 0.5-A constant current buck LED dri A 926-LM3402MR/NOPB
Datasheet
1,207In Stock
2,500Expected 5/13/2027
Cut Tape
S/ 10.04
S/ 7.51
S/ 6.85
S/ 6.15
Reel
S/ 5.22
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 0.5A Constant Crnt B uck Reg A 926-LM340 A 926-LM3402HVMRX/NOPB
Datasheet
32In Stock
S/ 11.09
S/ 8.29
S/ 7.24
S/ 6.54
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 75-V 0.5A constant c urrent buck LED dri A 926-LM3402HVMM/NOPB
Datasheet
Non-Stocked Lead-Time 20 Weeks
Reel
S/ 5.10
S/ 4.98
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
Cut Tape
S/ 10.39
S/ 7.71
S/ 7.05
S/ 6.31
Reel
S/ 5.18
View
MouseReel Available
Min.: 1
Mult.: 1
: 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, Cut Tape, MouseReel