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SY50133Z1 Datasheet Flyback Regulator

Manufacturer: Silergy

Overview: Application Note: SY50133Z1 Flyback Regulator With Primary Side CV/CC Control For Adapters and Chargers.

General Description

SY50133Z1 is a single stage Flyback regulator targeting at Constant Current/Constant Voltage (CC/CV) applications.

It integrates a 620V/4.4Ω MOSFET in a pact SO8 package to minimize the size.

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.

Key Features

  • 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 respns.
  • Cable Compensation for Better Load Regulation.
  • Low Start Up Current: 5μA Max.
  • Minimum Frequency Limitation 500Hz.
  • No-load Power is Less than 50mW.
  • Reliable Protections for OVP, SCP, OTP,OCP.
  • Reliable Protections for Safety Requirement.
  • Maximum switching frequency limi.

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