UL51A

UNISONIC TECHNOLOGIES CO., LTD UL51A Preliminary HIGH POWER FACTOR LINEAR CONSTANT CURRENT LED DRIVER CMOS IC  DESCRIPTION UTC UL51A is a high power factor linear constant current LED driver which is applied to LED lighting. Through the distinctive constant current control technology, it realizes that constant current accuracy is less than ±5% and output current is adjustable through external resistor. High power factor and low harmonic distortion are the particular features. The system is simple without transformer and electrolysis capacitor. Therefore, LED lighting batch job can be realized.  FEATURES * No transformer and high voltage electrolysis capacitor * Integrated high voltage startup power supply circuit * Adjustable output current, max 100mA * Inter-chip current deviation < ±5% * Efficiency: >90% * Power factor: >0.95 * THD<20% * Over temperature protection * Application system no EMI problems HSOP-8  ORDERING INFORMATION Ordering Number UL51AG-SH2-R Package HSOP-8 Packing Tape Reel UL51AG-SH2-R  MARKING (1)Packing Type (2)Package Type (3)Green Package (1) R: Tape Reel (2) SH2: HSOP-8 (3) G: Halogen Free and Lead Free www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 6 QW-R125-063.a UL51A Preliminary  PIN CONFIGURATION OUT4 1 8 GND OUT3 2 7 NC OUT2 3 6 NC OUT1 4 5 REXT  PIN DESCRIPTION PIN NO. 1 2 3 4 5 6~7 8 PIN NAME OUT4 OUT3 OUT2 OUT1 REXT NC GND DESCRIPTION current output port 4 current output port 3 curre...