Adaptive synchronous rectification controller
SRK1000 / SRK1000A /SRK1000B
Datasheet
Adaptive synchronous rectification controller for flyback converter
SOT23-6L
Pr...
Description
SRK1000 / SRK1000A /SRK1000B
Datasheet
Adaptive synchronous rectification controller for flyback converter
SOT23-6L
Product status link SRK1000 / SRK1000A /SRK1000B
Product summary
Order code
SRK1000 SRK1000ATR SRK1000BTR
Package
SOT23-6L
Packing
Tape and reel
Product label
Features
Secondary side synchronous rectification controller optimized for flyback converter.
Suitable for QR and mixed CCM/DCM fixed frequency operation. Wide Vcc operating voltage range 3.75 to 32 V. CC regulation operation down to 2 V output supported. Very low quiescent current in low consumption mode (160 μA). High-voltage sensing input for SR MOSFET drain-source voltage (100 V AMR). Operating frequency up to 300 kHz. High-current gate-drive output for N-MOSFET. Fast turn-on with minimum delay time and adaptive turn-off logic. Programmable min. TON and fixed min. TOFF (3 options: SRK1000, SRK1000A,
SRK1000B). Low consumption mode entry by primary side burst-mode detection or by
detection of SR MOSFET conduction lower than programmed min TON. SOT23-6L package.
Application
Battery chargers / quick chargers Adapters USB power delivery (profile 3)
Description
SRK1000 / SRK1000A /SRK1000B are controllers intended for secondary side synchronous rectification (SR) in flyback converters, suitable for operation in QR and mixed CCM/DCM fixed frequency circuits.
They provide a high-current gate-drive output, capable of driving N-channel Power MOSFETs.
The control scheme o...
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