The VP3187 is designed to provide fast response and high efficiency (Optional version of Power Saving Mode) with built-in 100mΩ N-channel MOSFET switch. It operates with external compen- sated, fixed 1MHz oscillation frequency and cur- rent mode modulation to provide the flexibility of various kinds of applications. The VP3187 sinks current up to 5.5A peak and is capable of soft- start time programming to avoid in-rush current. With 2.7V to 5.5V input voltage, VP3187 can boost the output voltage up to 12V. This makes it excellent to be applied in consumer electronics especially Li-ion battery powered speakers.

The VP3187 also features many protection schemes such as input under-voltage lockout, over current protection , input over/under voltage protection and over-temperature protection.

VP3187 is available in small SO-8P with exposed pad.

    Features

- Wide Input Voltage from 2.7V to 5.5V

- 600mV Reference Voltage with ±2% Accuracy

- Power Saving Mode

- 5.5A Peak Cycle-by-Cycle Current Limit

- 18V/100mΩ Internal MOSFET Switch

- 1MHz Fixed PWM Frequency

- Internal Soft-Start

- Over Temperature Protection

- Adjustable Over Current Protection

- Input Under-Voltage Lockout

- SO-8P Green Package with RoHS Compliant
Applications

- Portable Speaker

- LCD Monitor/LCD TV

- Battery Powered Device

- Set-Top Box

- DSL and Cable Modem
Typical Application