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    ​SA3846
    CURRENT MODE PWM CONTROLLER

    The SA3846 adopts fixed-frequency current mode control, which improves the system’s line voltage regulation and load response characteristics, as well as simplifies the design of control loop. The SA3846 has built-in precision bandgap adjustable reference power supply, high-frequency oscillator, error amplifier, differential current detection amplifier, undervoltage lockout circuit, and soft startup circuit. It provides 

    functions such as automatic symmetry correction for push-pull converter, parallel operation, external shutdown, double pulse suppression, dead time adjustment, etc.


    Main feature

    • Automatic feed forward compensation

    • Programmable controllable pulse-by-pulse current limit

    • Automatic symmetry correction for push-pull converter

    • Good load response characteristics

    • Parallel operation supported, applicable to module system

    • Built-in differential current detection amplifier, wide common mode input range

    • Double pulse suppression

    • High current totem pole output, output peak current of 500mA

    • Precision bandgap reference power supply, with accuracy of ±1%

    • Built-in undervoltage lockout circuit

    • Built-in soft startup circuit

    • External shutdown

    • Operating frequency: up to 500kHz


    Ordering Information
    Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
    SA3846DC DIP-16-300-2.54 SA3846DC Halogen free Tube
    SA3846SE SOP-16-375-1.27 SA3846SE Halogen free Tube
    SA3846SETR SOP-16-375-1.27 SA3846SE Halogen free Tape&Reel
    Block Diagram

    SA3846.png

    Documents
    title Types of Size (KB) date Download the latest English version
    SA3846 PDF 316 2021-01-05 SA3846 说明书
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