6-Channel SMBus or PWM Dimming LED Driver
ISL97673
NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PARTS
ISL97671A or ISL97672B
6-Channel SMBus or PWM D...
Description
ISL97673
NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PARTS
ISL97671A or ISL97672B
6-Channel SMBus or PWM Dimming LED Driver with Phase Shift Control
DATASHEET
FN7633 Rev.3.00 Sep 19, 2017
The ISL97673 is a 6-Channel 45V dual dimming capable LED driver that can be used with either SMBus/I2C or PWM signal for dimming control. The ISL97673 drives 6 channels of LED to support 78 LEDs from 4.5V to 26V or 48 LEDs from a boost supply of 2.7V to 26V and a separate 5V bias on the ISL97673 VIN pin.
The ISL97673 compensates for non-uniformity of the forward voltage drops in the LED strings with its six voltage controlled-current source channels. Its headroom control monitors the highest LED forward voltage string for output regulation, to minimize the voltage headroom and power loss in a typical multi-string operation.
The ISL97673 features optional channel phase shift control to minimize the input, output ripple characteristics, and load transients, as well as spreading the light...
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