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ADM8832 - Charge Pump Regulator for Color TFT Panel

Description

The ADM8832 is a charge pump regulator used for color thin film transistor (TFT) liquid crystal displays (LCD).

10.2 V) from a single 3 V input supply.

Features

  • 3 output voltages (+5.1 V, +15.3 V,.
  • 10.2 V) from one 3 V input supply Power efficiency optimized for use with TFT in mobile phones Low quiescent current Low shutdown current (.

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Full PDF Text Transcription

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Charge Pump Regulator for Color TFT Panel ADM8832 FEATURES 3 output voltages (+5.1 V, +15.3 V, −10.2 V) from one 3 V input supply Power efficiency optimized for use with TFT in mobile phones Low quiescent current Low shutdown current (<1 µA) Fast transient response Shutdown function Power saving during blanking period Option to use external ldo FUNCTIONAL BLOCK DIAGRAM VCC C5 2.2µF C1+ C1– VOUT CLKIN SCAN/ BLANK LDO_ON/ OFF OSCILLATOR LDO VOLTAGE REGULATOR CONTROL LOGIC DOUBLE LDO IN C6 2.2µF +5VOUT +5VIN C2+ C2– C2 1µF C3 1µF +15.3V C8 1µF C1 2.2µF ADM8832 VOLTAGE DOUBLER +5.1V C7 2.2µF APPLICATIONS Handheld instruments TFT LCD panels Cellular phones SHDN TIMING GENERATOR VOLTAGE TRIPLER TRIPLE C3+ C3– +15VOUT C4+ C4– C4 1µF VOLTAGE SHUTDOWN DISCHARGE INVERTER CONTROL GND –10.
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