NCP1251 NCP1251ASN65T1G Switching Controllers IC

Details

Image

Features

• Fixed−Frequency 65 or 100 kHz Current−Mode Control Operation

• Internal and Adjustable Over Power Protection (OPP) Circuit

• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load Conditions

• Internal Ramp Compensation

• Internal Fixed 4 ms Soft−Start

• 100 ms Timer−Based Auto−Recovery Short−Circuit Protection

• Frequency Jittering in Normal and Frequency Foldback Modes

• Option for Auto−Recovery or Latched Short−Circuit Protection

• OVP Input for Improved Robustness

• Up to 28 V VCC Operation

• Latched or Auto−Recovery OVP Protection on VCC

• +300 mA / −500 mA Source/Sink Drive Capability

• Less than 100 mW Standby Power at High Line

• EPS 2.0 Compliant

• These are Pb−Free Devices

The NCP1251 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP−6 package. With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak current mode control.