Texas Instruments LM3402
The LM3402/HV are monolithic switching regulators designed to deliver constant currents to high power LEDs.| Part No. | LM3402 |
|---|---|
| Datasheet | LM3402 Download |
| Manufacturer |  Texas Instruments |
| Description | 0.5-A Constant Current Buck Regulator |
| Buy | Stock & Price |
FEATURES
●1 Integrated 0.5-A N-channel MOSFET● VIN Range from 6 V to 42 V (LM3402)
● VIN Range from 6 V to 75 V (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 2
APPLICATIONS
● LED Drivers● Constant Current Source
● Automotive Lighting
● General Illumination
● Industrial Lighting 3
DESCRIPTION
Ideal for automotive, industrial, and general lighting applications, they contain a high-side Nchannel 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.
