General Description

The AP2008 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip, mainly designs for power-supply regulator. All the functions include an on-chip 0.77V reference output, an error amplifier, an adjustable oscillator, a soft-start, UVLO, SCP circuitry, and a push-pull output circuit. Switching frequency is adjustable by trimming CT. During low VCC situation, the UVLO makes sure that the outputs are off until the internal circuit is operational normally.

Features

• PWM Buck Control Circuitry

• Operating voltage can be up to 20V

• Under voltage Lockout (UVLO) Protection

• Short Circuit Protection (SCP)

• Soft-start circuit

• Variable Oscillator Frequency -- 300Khz Max

• 0.77V voltage reference Output

• 8-pin SOP package

• Lead Free Finish/ RoHS Compliant for Lead Free and “Green” products (Note 1)

• SOP-8L: Available in “Green” Molding Compound (No Br, Sb)

Applications

• Backlight inverter

• LCD Monitor

• XDROM, XDSL Product

• DC/DC converters in computers, etc.