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ADM8832,datasheet,pdf(Charge P
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The ADM8832 is a charge pump regulator used for color thin
film transistor (TFT) liquid crystal displays (LCD). Using charge
pump technology, the device can be used to generate three
output voltages (+5.1 V ±2%, +15.3 V, −10.2 V) from a single
3 V input supply. These outputs are then used to provide
supplies for the LCD controller (+5.1 V) and the gate drives for
the transistors in the panel (+15.3 V and −10.2 V). Only a few
external capacitors are needed for the charge pumps. An
efficient low dropout voltage regulator also ensures that the
power efficiency is high and provides a low ripple 5.1 V output.
This LDO can be shut down and an external LDO used to
regulate the 5 V doubler output and drive the input to the
charge pump section, which generates the +15.3 V and −10.2 V
.
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