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ML4803 - 8-Pin PFC and PWM Controller Combo

General Description

The ML4803 is a space-saving controller for power factor corrected, switched mode power supplies that offers very low start-up and operating currents.

Key Features

  • s s Internally synchronized PFC and PWM in one 8-pin IC Patented one-pin voltage error amplifier with advanced input current shaping technique Peak or average current, continuous boost, leading edge PFC (Input Current Shaping Technology) High efficiency trailing-edge current mode PWM Low supply currents; start-up: 150µA typ. , operating: 2mA typ. Synchronized leading and trailing edge modulation Reduces ripple current in the storage capacitor between the PFC and PWM sections Overvoltage, UVLO, a.

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📁 Similar Datasheet

Part Number Description Manufacturer
ML4803 8-Pin PFC and PWM Controller Combo Micro Linear
ML4800 Power Factor Correction and PWM Controller Combo Micro Linear
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ML4802 PFC/PWM Controller Combo with Green Mode Micro Linear
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Other Datasheets by Fairchild (now onsemi)

Part Number Description
ML4800 Power Factor Correction and PWM Controller Combo
ML4801 Variable Feedforward PFC/PWM Controller Combo
ML4802 PFC/PWM Controller Combo with Green Mode
ML4804 Power Factor Correction and PWM Controller Combo
ML4805 Variable Feedforward PFC/PWM Controller Combo

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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January 2001 PRELIMINARY ML4803 8-Pin PFC and PWM Controller Combo GENERAL DESCRIPTION The ML4803 is a space-saving controller for power factor corrected, switched mode power supplies that offers very low start-up and operating currents. Power Factor Correction (PFC) offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications. The ML4803 includes circuits for the implementation of a leading edge, average current “boost” type PFC and a trailing edge, PWM. The ML4803-1’s PFC and PWM operate at the same frequency, 67kHz. The PFC frequency of the ML4803-2 is automatically set at half that of the 134kHz PWM.