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ACT4065 - 450 KHz Step-Down Converter

General Description

The ACT4065 is a monolithic step-down switch mode converter with a built in internal power MOSFET.

It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation.

The ACT4065 requires a minimum number of readily available standard external components.

Key Features

  • z z z z z z z z z z 2A Output Current 0.22Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capacitors Up to 95% Efficiency 25µA Shutdown Mode Fixed 450KHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Wide 4.75 to 25V Operating Input Range Output Adjustable from 1.22V to 21V.

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Datasheet Details

Part number ACT4065
Manufacturer Microelectronic
File Size 662.25 KB
Description 450 KHz Step-Down Converter
Datasheet download datasheet ACT4065 Datasheet

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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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A, 450 KHz Step-Down Converter ACT4065 DESCRIPTION The ACT4065 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. The ACT4065 requires a minimum number of readily available standard external components. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-bycycle current limiting and thermal shutdown. In shutdown mode the regulator draws 25µA of supply current. FEATURES z z z z z z z z z z 2A Output Current 0.