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KA7577 - SMPS Controller

General Description

KA7577 is fixed frequency PWM controller and specially designed for SMPS to get regulated DC voltage from AC power supply.

This integrated circuit has so fast rise and fall output pulse that it can directly drive power transistor as well as power MOSFET.

Key Features

  • Low Stand-By Current Pulse by Pulse Current Limiting Over Voltage Protection Over Current Protection Integrated Thermal Shutdown Circuit Output Driver Current of ± 2A Totem pole Output.

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Full PDF Text Transcription for KA7577 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for KA7577. For precise diagrams, and layout, please refer to the original PDF.

www.fairchildsemi.com KA7577 SMPS Controller Features • • • • • • • Low Stand-By Current Pulse by Pulse Current Limiting Over Voltage Protection Over Current Protection I...

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lse Current Limiting Over Voltage Protection Over Current Protection Integrated Thermal Shutdown Circuit Output Driver Current of ± 2A Totem pole Output Description KA7577 is fixed frequency PWM controller and specially designed for SMPS to get regulated DC voltage from AC power supply. This integrated circuit has so fast rise and fall output pulse that it can directly drive power transistor as well as power MOSFET. This device features high speed and high sensitive current limiting. Protection circuitry include current limiting function against short and over current at secondary side, owing to the integrated timertype-pr

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