LD8526GL

LD8526 08/31/2018 Synchronous Rectification Driver with Green Mode Function REV. 00 General Description Features LD8526 is a secondary side synchronous rectification (SR) Suited for low side and high side flyback synchronous driver IC. It is suited for flyback low side and high side rectification in CCM, DCM and QR(valley lock) mode synchronous rectification in CCM, DCM and QR mode. For Suited for forward freewheeling rectification in CCM forward freewheeling rectification application, LD8526 can and DCM be applied in CCM and DCM operation. Self-supplying for operation with low output voltage and/or high side rectification without an auxiliary In light load condition, LD8526 will enter green mode to winding. reduce operation current by stopping SR MOSFET driving Suited for primary side with peak load function (max. function. frequency 130kHz) LD8526 can generate its own supply voltage through low Suited for PD application, which output voltage range output voltage or high side rectification applications to from 3V to 21V, and VCC range from 3V to 6V. charge battery. Programmable turn-off level Fast turn-off total delay of 30ns 200 A ultra-low green mode operation current Gate source/sink capability: 0.5A/-3A Applications Switching AC/DC adaptor and battery charger Open frame switching power supply 1 Leadtrend Technology Corporation www.leadtrend.com.tw LD8526-DS-00 August 2018 LD8526 LD8526 LD8526 08/31/2018 Typical Application DC Output HVR GND 2 5 VIN DRV 1 6 DET VCC 4 3 Fig. 1 Flyback Low Side Synchronous Rectification DC Output 1 4 DET DRV GND HVR 2 5 3 6 VIN VCC Fig. 2 Flyback High Side Synchronous Rectification 2 Leadtrend Technology Corporation www.leadtrend.com.tw LD8526-DS-00 August 2018