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
