GeneralDescription

SM2087 is a high powerfactor linear constant current LED driver which is applied to LED lighting.Through the distinctive constant current control technology, it realizes thatconstant current accuracy is less than ±5% and output current is adjustablethrough external resistor. High power factor and low harmonic distortion are theparticular features.

The system is simplewithout transformer and electrolysis capacitor. Therefore, LED lighting batchjob can be realized.

Features

l  No transformer and high voltage electrolysis capacitor

l  Integrated high voltage startup power supply circuit

l  Adjustableoutput current, max 60mA

l  Inter-chipcurrent deviation < ±5%

l  Efficiency：>90%

l  Powerfactor ：>0.95

l  THD<20%

l  Overtemperature protection

l  Applicationsystem no EMI problems

l  Package：ESOP8

Applications

l  LEDconstant current driver

l  T5/T8 tubelamp

l  LED bulblamp

l  LED ceilinglamp

TypicalSchematic Circuit Diagram