AAT3190 - ANALOGICTECH

AAT3190 Positive/Negative Charge Pump for Voltage Bias

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 independ.

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 <1.0µA Shutdown Current Internal Power MOSFETs Internally Controlled Soft Start Fast Transient Response Ultra-Thin Solution (No Inductors) -40°C to +85°C Temperature Range Available in 8-Pin MSOP or 12-Pin TSOPJW Package Applications
•
•
•
•
• CCD Sensor Voltage Bias OLEDs Passive-Matrix Displays Personal Digital Assistants (PDAs) TFT Active-Matrix LCDs Typical Application INPU.