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LM3402

National Semiconductor
Part Number LM3402
Manufacturer National Semiconductor
Description 0.5A Constant Current Buck Regulator
Published Oct 23, 2006
Detailed Description www.DataSheet4U.com LM3402/LM3402HV 0.5A Constant Current Buck Regulator for Driving High Power LEDs October 2006 LM3...
Datasheet PDF File LM3402 PDF File

LM3402
LM3402

Overview
www.
DataSheet4U.
com LM3402/LM3402HV 0.
5A Constant Current Buck Regulator for Driving High Power LEDs October 2006 LM3402/LM3402HV 0.
5A Constant Current Buck Regulator for Driving High Power LEDs General Description The LM3402/02HV 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.
Features Integrated 0.
5A N-channel MOSFET VIN Range from 6V to 42V (LM3402) VIN Range from 6V to 75V (LM3402HV) 500 mA Output Current Over Temperature Cycle-by-Cycle Current Limit No Control Loop Compensation Required Separate PWM Dimming and Low Power Shutdown Supports all-ceramic output capacitors and capacitor-less outputs n Thermal shutdown protection n MSOP-8 Package n n n n n n n n Applications n n n n n LED Driver Constant Current Source Automotive Lighting General Illumination Industrial Lighting Typical Application 20192101 © 2006 National Semiconductor Corporation DS201921 www.
national.
com DataSheet 4 U .
com www.
DataSheet4U.
com LM3402/LM3402HV Connection Diagram 20192102 8-Lead Plastic MSOP-8 Package NS Package Number MUA08A Ordering Information Order Number LM3402MM LM3402MMX LM3402HVMM LM3402HVMMX MSOP-8 MUA08A Package Type NSC Package Drawing Supplied As 1000 units on tape and reel 3500 units on tape and reel 1000 units on tape and reel 3500 units on tape and reel Pin Descriptions Pin(s) 1 2 3 4 5 6 7 8 Name SW BOOT DIM GND CS RON VCC VIN Description...


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