AiT Semiconductor Inc.
www.
ait-ic.
com A8168 SERIES WHITE LED BACKLIGHT DRIVER 1MHz PWM STEP-UP DC-DC CONVERTER DESCRIPTION FEATURES The A8168 Series is a fixed frequency, constant current step-up DC/DC converter idea for driving LEDs used in backlighting application on cellular phones, PDAs and digital cameras etc.
Output voltage of up to 17.
5V can be derived, and from a 3.
2V input four white LED’s can be driven in series or alternatively, using a 2.
5V input, a network of two parallel legs with three in each may be driven.
Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin.
         Oscillation frequency : 1.
0 MHZ Output volta...

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