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AAT3190 - Positive/Negative Charge Pump for Voltage Bias

General Description

The AAT3190 charge pump controller provides the regulated positive and negative voltage biases required by active matrix thin-film transistor (TFT) liquid-crystal displays (LCDs), charge-coupled device (CCD) sensors, and organic light emitting diodes (OLEDs).

Key Features

  • ChargePump™ VIN Range: 2.7V to 5.5V Adjustable ± Dual Charge Pump Positive Supply Output Up to +25V Negative Supply Output Down to -25V Up to 30mA Output Current 1.0MHz Switching Frequency.

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Datasheet Details

Part number AAT3190
Manufacturer ANALOGICTECH
File Size 411.13 KB
Description Positive/Negative Charge Pump for Voltage Bias
Datasheet download datasheet AAT3190 Datasheet

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AAT3190 Positive/Negative Charge Pump for Voltage Bias General Description The AAT3190 charge pump controller provides the regulated positive and negative voltage biases required by active matrix thin-film transistor (TFT) liquid-crystal displays (LCDs), charge-coupled device (CCD) sensors, and organic light emitting diodes (OLEDs). Two low-power charge pumps convert input supply voltages ranging from 2.7V to 5.5V into two independent output voltages. The dual low-power charge pumps independently regulate a positive (VPOS) and negative (VNEG) output voltage. These outputs use external diode and capacitor multiplier stages (as many stages as required) to regulate output voltages up to ±25V. Built-in soft-start circuitry prevents excessive inrush current during start-up.