ISL97678IRZ-T;ISL97678IRZ-TK;中文规格书,Datasheet资料.pdf

I 8-Channel 45V 50mA LED Driver S L ISL97678 Features 9 7 6 The ISL97678 is an 8-channel PWM dimming LED driver • 8 Channels for LCD backlight applications. The ISL97678 is capable 7 • 4.75V ~ 26V Input of driving up to 96 pieces of 3.4V/50mA LEDs but larger numbers of LEDs is possible if the LED forward voltage • 45V Maximum Output 8 combined is less than 45V. The ISL97678 has 8 channels • Drive Typically 96 LEDs (3.4V/50mA each) of voltage controlled current sources with typical currents • External PWM Input up to 25kHz Dimming matching to ±1%, which compensate for the • Dimming range 0.8%~100% up to 30kHz non-uniformity effect of forward voltages variance in the • Current Matching ±0.7% LED strings. To minimize the voltage headroom and power loss in the typical multi-string operation, the • Protections