LM3404 Datasheet - National Semiconductor

LM3404 1.0A Constant Current Buck Regulator

The LM3404/04HV 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 NFET switch with a minimum overtemperature current limit of 1.2A for step-down (Buck) regulators.

LM3404 Features

* Integrated 1.2A NFET VIN Range 6V to 42V (LM3404) VIN Range 6V to 75V (LM3404HV) 1.2A 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 The

LM3404_NationalSemiconductor.pdf