NCP1271D100R2G Datasheet PDF - ON Semiconductor

Soft−SkipMode Standby PWM Controller with Adjustable Skip Level and External Latch

●The NCP1271 represents a new, pin to pin compatible, generation of the successful 7−pin current mode NCP12XX product series. The controller allows for excellent stand by power consumption by use of its adjustable Soft−Skip mode and integrated high voltage startup FET. This proprietary Soft−Skip also dramatically reduces the risk of acoustic noise.

●Features

●•Fixed−Frequency Current−Mode Operation with Ramp

●  Compensation and Skip Cycle in Standby Condition

●•Timer−Based Fault Protection for Improved Overload Detection

●•“Soft−Skip Mode” Technique for Optimal Noise Control in Standby

●•Internal High−Voltage Startup Current Source for Lossless Startup

●•5% Current Limit Accuracy over the Full Temperature Range

●•Adjustable Skip Level

●•Internal Latch for Easy Implementation of Overvoltage and

●Overtemperature Protection

●•Frequency Jittering for Softened EMI Signature

●•+500 mA/−800 mA Peak Current Drive Capability

●•Sub−100 mW Standby Power can be Achieved

●•Pin−to−Pin Compatible with the Existing NCP120X Series

●•This is a Pb−Free Device

●Typical Applications

●•AC−DC Adapters for Notebooks, LCD Monitors

●•Offline Battery Chargers

●•Consumer Electronic Appliances STB, DVD, DVDR