DESCRIPTION
The AIC1652 is a high performance inverting DC/DC converter, designed to drive an external power switch to generate programmable negative voltages. In the particularly suitable LCD bias contrast application, efficiency of 87% can be achieved with low cost PNP bipolar transistor drivers. Output voltage can be scaled to -40V or greater by two external resistors.

FEATURES
● 2.4V to 7V Input Voltage Operation.
● Adjustable Output Voltage up to -40V.
● Low Quiescent Current at 80mA.
● Pulse Frequency Modulation Maintains High Efficiency (87%).
● 70KHz to 160KHz Switching Frequency.
● Power-Saving Shutdown Mode (0.7mA Typical).
● High Efficiency with Low Cost External PNP Bipolar Transistor.

APPLICATIONS
● Negative LCD Contrast Bias for
    1. Notebook & Palmtop Computers.
    2. Pen-Based Data System.
    3. Portable Data Collection Terminals.
    4. Personal Digital Assistants.
● Negative Voltage Supply.