Synchronous Rectification (SR) Driver with integrated 45V low RDS(ON) N-Channel MOSFET
LD8921 is a secondary side synchronous rectification (SR) driver IC in DCM operation.
It combines a low voltage drop N-channel MOSFET to improve efficiency and reduce heat from secondary side rectifier.
The IC can work with low system output voltage which goes down to 3V in the constant current mode.
LD8921 integrates programmable turn-off level. Furthermore, it responds quickly to the dynamic load in primary side regulation (PSR) topology.
The IC is available in SMD. LD8921 GS in SOP-8 package.
FEATURES
▲ Seconday-side synchronous rectification controller optimized for 5V output systems
▲ Integrated 45V low RDS(ON) MOSFET
▲ Programmable turn-off level
APPLICATIONS
▲ 5V charger / adaptor
▲ Standby power supply
Datasheet 
