ACE73655Y

5.5V, 6A, 1.2MHz, High-Efficiency Buck Converter

VER 1.1

1

Description

The ACE73655Y is a monolithic, step down, switch mode converter with internal power MOSFETs. It

can provide continuous output current up to 6A from 2.8V to 5.5V input voltage, and has good load and

line regulation capability. The output voltage can be adjusted below 0.6V.

Constant on time control provides a fast-transient response and simplifies loop stability. Fault state

protections include cycle-by-cycle current limiting and thermal shutdown.

The ACE73655Y is housed in a small QFN2*3-12 package and requires only a minimal number of readily

available, standard, external components.

Features

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Operating Input Range: 2.8V to 5.5V

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Quiescent Current: 40µA

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Up to 6A Output Current

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Fixed Switching Frequency: 1.2MHz

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Adjustable Output from 0.6V

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1.5ms Internal SS Time with Pre-Bias Startup

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20mΩ and 12mΩ Internal Power MOSFETs

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100% Duty Cycle in Dropout

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1% Feedback Accuracy

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External Mode Control

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External VCON Control

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Cycle-by-Cycle Over Current Protection

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Short Circuit Protection with Hiccup Mode

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Stable with Low-ESR Output Ceramic Capacitors

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Thermal Shutdown

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Output Discharge Function

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Package: QFN2*3-12

Application

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Battery-Powered Devices

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Storage (SSD, HDD)

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Portable Instruments