NC  -  Series DataSheet
NCP1581  -  Full Featured Single Phase Buck Controller;High Frequency Synchronous Step Down PWM Controller for Tracking Applications  -  ON Semiconductor  -  DC-DC Controllers

The NCP1581 controller IC is designed to provide a simple synchronous buck regulator for on−board DC to DC applications in a 14−pin SOIC. The NCP1581 is designed specifically for tracking applications by providing the track input.
The NCP1581 operates at a fixed internal 400 kHz switching frequency allowing the use of small external components. The device features a programmable soft start set by an external capacitor, under−voltage lockout and output under−voltage detection that latches off the device when an output short is detected.

Features
• Power up Sequencing / Tracking
• Enable Input
• Internal 400 kHz Oscillator
• Programmable Soft−Start
• Fixed Frequency Voltage Mode
• Voltage Mode Adaptive Deadtime
• This is a Pb−Free Device

Applications
• Tracking Applications
• Game Consoles
• Computing Peripheral Voltage Regulators
• Graphics Cards
• General DC to DC Converters