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SY22817ABC

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Flyback Controller with Primary Side CC/CV Control
Datasheet
SY22817ABC Flyback Controller with Primary Side CC/CV Control Datasheet
    Part NumberSY22817ABC
    Input TypeAC
    TopologyFlyback
    ApplicationAdapters,Chargers
    Po_max (W)75
    Accuracy (max)±2.5%
    Idrive_max (A)160
    No Load Loss<75mW
    Fsw(kHz)125
    Protection ModeOVP, SCP, OTP
    Standards & Certification
    Features / Special FunctionQR,PSR,CC/CV
    PackageSOT23-6
    Temp Range-40°C to 125°C
    • Tight PSR CC/CV Regulation Over Entire Operating Range
    • QR-mode Operation for High Efficiency
    • PWM/PFM Control for High Average Efficiency
    • Fast Dynamic Load Transient Response
    • Cable Compensation for Better Load Regulation
    • Low Start Up Current: 5μA Max 
    • Minimum Frequency Limitation 500Hz
    • Reliable Protections for OVP, SCP, OTP,OCP
    • Reliable Protections for Safety Requirement
    • Maximum Switching Frequency Limitation 125kHz
    • RoHS Compliant and Halogen Free
    • Compact Package: SOT23-6

    Evaluation Board

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    EVB_SY22817

    SY22817 is a single stage Flyback controller targeting at Constant Current/Constant Voltage (CC/CV) applications. Both the output current and voltage are sensed on the primary side, eliminating the opto-isolator and the secondary side feedback circuitry, and minimizing the overall system cost.

    Technical Documentation