Single or Multiple Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers

The ISL97692, ISL97693, ISL97694A are Intersil’s highly integrated 4- and 6-channel LED drivers for display backlighting. These parts maximize battery life by featuring only 1mA quiescent current, and by operating down to 2.4V input voltage, with no need for higher voltage supplies.

Features

• 2.4V minimum input voltage, supports single cell applications

• 4 channels, up to 40mA each (ISL97692) or 6 channels, up to 30mA each (ISL97693, ISL97694A)

• 90 efficient at 6P5S, 3.7V and 20mA (ISL97693, ISL97694A)

• Low 0.8mA quiescent current

• PWM dimming control with internally generated clock

- 8-bit resolution with adjustable dimming frequency up to 30kHz (ISL97692, ISL97694A)

- 12-bit resolution with adjustable dimming frequency up to 1.875kHz (ISL97694A)

- Optional automatic channel phase shift (ISL97692, ISL97694A)

- Linear dimming from 0.025~100 up to 5kHz or 0.4~100 up to 30kHz (ISL97692, ISL97694A)

• Direct PWM dimming with 0.005 minimum duty cycle at 100Hz

• ±2.5 output current matching

• Adjustable switching frequency from 400kHz to 1.5MHz

Applications

• Tablet, Notebook PC and Smart Phone Displays LED Backlighting