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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