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ISL976787

Intersil
Part Number ISL976787
Manufacturer Intersil
Description 4-Channel LED Driver
Published Mar 3, 2016
Detailed Description 4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution ISL97687 The ISL97687 is a PWM controlled L...
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ISL976787
ISL976787

Overview
4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution ISL97687 The ISL97687 is a PWM controlled LED driver that supports 4 channels of LED current, for Monitor and TV LCD backlight applications.
It is capable of driving 160mA per channel from a 9V to 32V input supply, with current sources rated up to 75V absolute maximum.
The ISL97687’s current sources achieve typical current matching to ±1%, while dynamically maintaining the minimum required VOUT necessary for regulation.
This adaptive scheme compensates for the non-uniformity of forward voltage variance in the LED strings.
The ISL97687 can decode both an incoming PWM signal and an analog input voltage, for DC-to-PWM dimming applications.
Modes include direct PWM and several modes where the PWM frequency is synthesized on chip at 10-bit resolution.
This can be either free running, or synchronized with the frame rate to give both a frequency and a phase lock, minimizing panel to panel variation and display flicke...


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