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AiT Semiconductor Inc.
www.ait-ic.com
A8169-020
LED BACKLIGHT DRIVER PFM/PWM MODE MAX. 3MHZ, VARIABLE FREQUENCY
DESCRIPTION
FEATURES
The A8169-020 variable frequency step-up Converter Up to 19V Output Voltage
drives white LEDs with a constant current to provide Wide Operation Range: 2V to 6V
backlight in cell phones, PDAs, and other hand-held Maximum 3MHz Operating Frequency
devices. It features allowing series connection of the PWM Dimming Control
white LEDs so that the LED currents are identical for Shutdown Current <1uA
uniform brightness. An enable input can be pulsed Current Limit Cycle-by-Cycle
repeatedly to adjust LEDs brightness.