DATASHEET
ISL97691 FN7840
Rev.2.00
Sep 8, 2017 2.4V LED Driver with Independent Analog and PWM Dimming Controls of
2 Backlights for 3D Application
The ISL97691 is Intersil’s highly integrated 4 channel LED driver
for single cell Li-Ion battery operated mobile displays requiring
analog dimming, and for 3D mobile display applications. It
drives four 40mA channels of LEDs up to 26V from an input
supply 2.4V to 5.5V. The ISL97691 will also drive 60mA
channels up to 21V at 30% duty for high peak current 3D
modes.
The ISL97691 provides 4 channels of current with 2
independent analog dimming controls and 2 independent
PWM dimming controls. Channels 1 and 2 form one channel
group and channels 3 and 4 form the other channel group.
Each channel group’s analog dimming is controlled through
1-Wire communication with 6-bit resolution and each channel
group’s PWM dimming is controlled by a separate PWM input.
This unique setup allows 2D or 3D application where
independent and dynamic channel control of LED peak current
and PWM dimming duty cycle are possible. The ISL97691
employs adaptive boost architecture that allows ultra low …