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SG6849 - Green-Mode PWM Flyback Power Controller

Description

This highly integrated PWM controller provides several

Features

  • Linearly Decreasing PWM Frequency.
  • Green-Mode Under Light-Load and Zero-Load Conditions.
  • Constant Voltage (CV) and Constant Current (CC).
  • No Secondary Feedback.
  • Low Startup Current: 5μA.
  • Low Operating Current: 3.6mA.
  • Leading-Edge Blanking (LEB).
  • Constant Power Limit.
  • Universal AC Input Range.
  • Synchronized Slope Compensation.
  • 150°C OTP Sensor with Hysteresis.
  • VDD Over-Voltage Clamping.
  • Cycle-by-Cycle Current Limiting.
  • Under-Vo.

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Full PDF Text Transcription

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SG6849 —Low-Power, Green-Mode PWM Flyback Power Controller without Secondary Feedback SG6849 Low-Power, Green-Mode PWM Flyback Power Controller without Secondary Feedback Features ƒ Linearly Decreasing PWM Frequency ƒ Green-Mode Under Light-Load and Zero-Load Conditions ƒ Constant Voltage (CV) and Constant Current (CC) ƒ No Secondary Feedback ƒ Low Startup Current: 5μA ƒ Low Operating Current: 3.6mA ƒ Leading-Edge Blanking (LEB) ƒ Constant Power Limit ƒ Universal AC Input Range ƒ Synchronized Slope Compensation ƒ 150°C OTP Sensor with Hysteresis ƒ VDD Over-Voltage Clamping ƒ Cycle-by-Cycle Current Limiting ƒ Under-Voltage Lockout (UVLO) ƒ Fixed PWM Frequency: 65kHz ƒ Gate Output Maximum Voltage Clamped at 16.
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