Part Number: LM3402
Function: 0.5A, Constant Current Buck Regulator for Driving High Power LED
Package: MSOP-8 Type
Manufacturer: Texas Instruments
Pinouts:
Description
The LM3402 / LM3402HV 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 (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
• Thermal Shutdown Protection
• VSSOP, SO PowerPAD Packages
Applications
1. LED Driver
2. Constant Current Source
3. Automotive Lighting
4. General Illumination
5. Industrial Lighting
Other data sheets are available within the file:
LM3402HV, LM3402HVMM/NOPB, LM3402HVMMX/NOPB, LM3402HVMR/NOPB
LM3402 Datasheet PDF Download
