Description

The ML4803CP-2 is a space-saving controller for power factor corrected, switched mode power supplies that offers very low start-up and operating currents. It is an 8-pin IC that combines internally synchronized power factor correction (PFC) and pulse width modulation (PWM) circuits. The ML4803CP-2 is designed to comply with IEC1000-3-2 specifications and offers several benefits such as reducing power line loading, using smaller and lower cost bulk capacitors, and reducing stress on switching FETs.

Specifications and Features

- 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, and brownout protection

- PFC VCCOVP with PFC Soft Start

Application Scenarios

The ML4803CP-2 is ideal for power factor correction in switched mode power supplies. It can be used in various electronic devices and equipment that require a compact and efficient power supply with reduced power line loading.

Comparison

- Very low start-up and operating currents

- Compliant with IEC1000-3-2 specifications

- Space-saving design

- Reduces power line loading

- Uses smaller and lower cost bulk capacitors

- Limited to power factor correction applications