SY23425ABC (SY5231ABC)

Secondary Side Synchronous Rectification

Part number	SY23425ABC
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 Converter
DSEN Pin Sensing up to 200V
DSEN Falling Slope Rate Detecting to Avoid False Turn On of SR MOSFET by Parasitic Ring
DSEN High Voltage Blanking Time detecting to enhance system ESD performance
Dual Power Supply Channel for 3.3V to 21V Output Systems
Maximum Allowed Switching Frequency Up to 500kHz
10 ns Typical Turnoff Propagation Delay
2A Sink, 0.5A Source Gate Driver Capability
Compact Package: SOT23-6

EVB_SY23425ABC

The EVB_SY23425ABC is intended for evaluating Secondary Side Synchronous Rectification

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12