General Description ：

RM9003B is a one_stage LED constant

current driving control chip which

Compatible with silicon controlled dimmer

application.Output current stay a constant

in the range of 5m~100mA as once set by

external SENSE resistor.

It has the advantages of simpler system

structure fewer peripheral components

and simpler circuit.

Applications ：

 LED Fluorescent tube T5/T8/T10…

 LED Bulb/Corn light/Candle lamp…

 Other small power LED lighting…

Features： Simpler peripheral circuit without

magnetic components

 Chips can be used in series or parallel

application

 Chips and LED can be welded inthesame PCB board

 Output current can be set by external

resistor

 Application circuit has no EMI

problems

 Built_in 500V high voltage MOS Over temperature regulation

 Package：ESOP8、TO252、SOT89-3