Part Number: SM7523
Function: Constant primary control power switch
Package: SOP 8 Pin Type
Manufacturer: GOSTON ELECTRONICS
Image and Pinouts:
Description:
SM7523 is a high-performance primary-side feedback control power switch chip applied to off-line low-power AC/DC switching power supplies. It achieves high-precision constant current output within the full voltage input range, with an accuracy of less than ±5%, without loop compensation, and The system can save optocouplers, TL431 and transformer auxiliary windings and other components, reducing costs. The chip integrates protection functions such as cycle-by-cycle peak current limit, FB over-voltage protection, output open/short-circuit protection, and boot soft start to improve the reliability of the system.
Features
1. Wide voltage 85Vac~265Vac input voltage range constant current accuracy is less than ±5%
2. Compatible with 1~3W in the full voltage range
3. Mingwei’s patented primary-side feedback control technology without auxiliary winding can save optocoupler, 431 and other components in the system
4. No loop compensation required
5. Built-in leading edge blanking circuit (LEB)
6. Cycle-by-cycle peak current comparison
7. Output open/short circuit protection
8. Built-in soft start
Application circuits
Other data sheets are available within the file: SM-7523
SM7523 Datasheet PDF Download
