GOSTON ELECTRONICS CO.,LTD
SM7525 Primary Side Feedback Controlling Switch v1.6
SM7525
Features
z Topological structur...
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...