SM7525

GOSTON ELECTRONICS CO.,LTD SM7525 Primary Side Feedback Controlling Switch v1.6 SM7525 Features z Topological structure support: Fly-back and low-cost BUCKBoost z Integrated 730V hybrid technology z Universal input voltage: 85Vac~265Vac z Constant current precision less than ±5% z Universal voltage compatible with 1~5W z SunMoon patented no auxiliary winding of primary side feedback control technology without coupler, 431 and other components. z No loop compensation z Built-in LEB circuit z Cycle by cycle peak current limiting z Output open/short circuit z Built-in soft-start z Built-in overvoltage protection and short circuit protection z Package：SOP8 Applications ‹ LED lighting driver General Description SM7525 is a primary side feedback controlling power chip used in off-line small power AC/DC switching power. It realizes high precision (less than ±5%) constant current output under universal input voltage. The circuit is no loop compensation and saves opto-coupler, L431, transformer auxiliary winding and other components to reduce the cost. The circuit integrates cycle by cycle peak current limiting, FB overvoltage protection, output open/short protection and soft-start, which optimize the reliability. Pin Figure SOP8 Output Power Meter Input Voltage Output Power 85Vac～265Vac 1~5W 180Vac～265Vac 5~7W Typical Application 8 DRAIN 7 DRAIN 6 GND 5 GND AC SM7525 DC CS 1 FB 2 NC 3 VCC 4 Absorbing Circuit Mail: [email protected] Tel: 0755 -27593075 Address: 3F,SS...