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HM6281 Datasheet 400khz 32v 2a Switching Current Boost Led Constant Current Driver

Manufacturer: H&M Semiconductor

Overview: 400KHz 32V 2A Switching Current Boost LED Constant Current Driver.

General Description

The HM6281 regulator is fixed frequency PWM Boost (step-up) LED constant current driver, capable of driving Series 1W LED units with excellent line and load regulation.

The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work.

The HM6281 could directly drive 5~8 Series 1W LED units at VIN>12V .

Key Features

  • n Wide 3.6V to 24V Input Voltage Rang n 0.22V Constant Current Sense Voltage n Directly drive 3~8 Series 1W LED n Fixed 400KHz Switching Frequency n Max. 2A Switching Current Capability n Up to 92% efficiency n Excellent line and load regulation n EN PIN TTL shutdown capability n Internal Optimize Power MOSFET n Built in LED Open Protection n Built in Soft-Start Function n Built in Frequency Compensation n Built in Thermal Shutdown Function n Built in Current Limit Function n Available in SOP8 p.

HM6281 Distributor