SY23510AABT (SY5040AABT)

CCM and QR SSR Flyback Controller for Adapters and Fast Chargers

Parameters
Features
Description

Part number	SY23510AABT
Pout (max) (W)	100
HV startup	NO
Operation mode	CCM/QR
Driving FETs type	MOS
No load loss (mW)	<75
Switching frequency (min)(kHz)	25.5
Switching frequency (max)(kHz)	85
Features	Wide VCC range,Pseudo fixed frequency,SR/Diode SCP
Package	SOT23-6
Operating temperature range(°C)	-40 to 125
Functional safety category

Wide VCC Operating Range: 9V to 54V
Low Startup Current: < 5μA
Mixed CCM+QR Control Architecture
Forced QR Operating under High Line Voltage Conditions
Quasi-Fixed Frequency Control to Eliminate Slope Compensation in CCM
85kHz Switching Frequency Limit under CCM
85kHz Switching Frequency Limit under QR Mode
Minimum Switching Frequency Limited to 25.5kHz
Frequency Foldback for High Average Efficiency
Burst Control for High Light Load Efficiency
Comprehensive Protections Including VCC OVP, Output OVP/UVP, OLP, OTP, and BO
Secondary SR MOSFET Short-Circuit Protection
Internal Soft-Start Process
Gate Drive Capability: +120mA/-520mA
Compact Package: SOT23-6

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Evaluation Board

Photo of evaluation board
Photo of evaluation board

EVB_SY23510AABT

The EVB_SY23510AABT is intended for evaluating CCM and QR SSR Flyback Controller for Adapters and Fast Chargers

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12