Part Number : MCP1630
Function : High-Speed, Microcontroller-Adaptable, Pulse Width Modulator
Package : DFN 8, MSOP 8 Pin Type
Maker : Microchip Technology
Pinouts : 
Description :
The MCP1630 is a high-speed Pulse Width Modulator (PWM) used to develop intelligent power systems. When used with a microcontroller, the IC will control the power system duty cycle to provide output voltage or current regulation. The device inputs are designed to be easily attached to the I/O of a microcontroller, which supplies the reference and oscillator to the MCP1630, to generate a flexible and adaptable power system.
Features
• High-Speed PWM Operation (12 ns CurrentSense to Output Delay)
• Operating Temperature Range:- -40°C to +125°C
• Precise Peak Current Limit (±5%) (MCP1630)
• Voltage Mode and Average Current Mode Control(MCP1630V)
• CMOS Output Driver (drives MOSFET driver orlow-side N-channel MOSFET directly)
• External Oscillator Input
Reference site :http://www.microchip.com/mcp1630
Datasheet PDF Download : 
Others datasheet of same file :
MCP1630-E/MS, MCP1630T-E/MS, MCP1630V, MCP1630VT