SY23425AABT (SY5231AABT)

Secondary Side Synchronous Rectification

Part number	SY23425AABT
Topology	Flyback
Integrated FETs(Yes/No)	NO
Integrated FETs type
Drain current (Conti.) (A)
Breakdown voltage (V)	200V
Ron (typ) (mΩ)
ZVS function	NO
Operation mode	CCM/QR/DCM
Dual supply channel	YES
Features	Gate clamped before VDD on,DSEN voltage falling slope rate detection,DSEN voltage blanking time detection
Package	SOT23-6
Operating temperature range(°C)	-40 to 125
Functional safety category

Suitable for CCM, DCM and QR Mode Flyback Converters
DSEN Pin Sensing up to 200V
DSEN Falling Slope Rate Detection to Avoid False Turn on of SR MOSFET by Parasitic Ring
Uses DSEN High Voltage Blanking Time to Enhance System ESD Performance
GATE Pin Clamped Before VDD on
Dual Supply Channel for 3.3V to 21V Output Systems
Up to 500kHz Switching Frequency
10 ns Typical Turn off Propagation Delay
2A Sink, 0.5A Source Gate Driver Capability
Compact Package: SOT23-6

EVB_SY23425AABT

The EVB_SY23425AABT is intended for evaluating Secondary Side Synchronous Rectification

Title	Date
Silergy_Catalog_Q3_2026	2026-11-04