General Description

LD8926AA1 is a secondary side synchronous rectification

(SR) IC with drive element and MOSFET. It is suited for

flyback low side and high side synchronous rectification in

CCM, DCM and QR mode. In light load condition,

LD8926AA1 will enter green mode to reduce operation

current by stopping SR MOSFET driving function.

LD8926AA1 can generate its own supply voltage through

low output voltage or high side rectification applications to

charge battery.

To reduce assembly process, layout area, and production

cost, SR MOSFET and LD8926AA1 control core are

packaged in SOP-8.

Features

 Suited for low side and high side flyback synchronous

rectification in CCM, DCM and QR(valley lock) mode

 Suited for forward freewheeling rectification in CCM

and DCM

 Self-supplying for operation with low output voltage

and/or high–side rectification without an auxiliary

winding

 Suited for primary side with peak load function (max.

frequency 130kHz)

 Suited for PD application,

 VCC range from 3V to 6V

 Programmable turn-off level

 Fast turn-off total delay of 30ns

 200A ultra-low green mode operation current

Applications

 Switching AC/DC adaptor and battery charger

 Open frame switching power supply