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, No Need for Higher Voltage Supplies

• 4 Channels, up to 40mA Each (ISL97692) or 6 Channels, up to 30mA Each (ISL97693/4A)

• 90 Efficient at 6P5S, 3.7V and 20mA (ISL97693/4A)

• Low 0.8mA Quiescent Current

• PWM Dimming Control with Internally Generated Clock

- 8-bit Resolution with Adjustable Dimming Frequency up to 30kHz (ISL97692/4A)

- 12-bit Resolution with Adjustable Dimming Frequency up to 1.875kHz (ISL97694A)

- Optional Automatic Channel Phase Shift (ISL97692/4A)

- Linear Dimming from 0.025~100 up to 5kHz or 0.4~100 up to 30kHz (ISL97692/4A)

• 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