NCP1271 Datasheet | onsemi

Features - Fixed- Frequency Current- Mode Operation with Ramp pensation 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 m A/- 800 m A Peak Current Drive Capability - Sub- 100 m W Standby Power can be Achieved - Pin- to- Pin patible 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 SOIC- 7 D SUFFIX CASE 751U MARKING DIAGRAMS 1271x ALYWG G 1 8 1 PDIP- 7 VHVIC P SUFFIX CASE 626B 1271Pxxx AWL YYWWG x = A or B A= 65 k Hz B= 100 k Hz xxx = Device Code: 65, 100 = Assembly Location L, WL = Wafer Lot Y, YY = Year W, WW = Work Week G or G = Pb- Free Package (Note: Microdot may be in either location) PIN CONNECTIONS Skip/latch 1 FB 2 CS 3...