ACE7259C

500KHz, 18V, 2.5A Synchronous Step-Down Converter

VER 1.2

1

Description

The ACE7259C is a fully integrated synchronous rectified step-down converter that provides wide 4.4V

to 18V input voltage range and 2.5A continuous load current capability. The ACE7259C can achieve high

efficiency and reduce power loss at light load. In shutdown mode, the Max supply current is about 10

μA.

The ACE7259C protection function includes cycle- by-cycle current limit, UVLO and thermal shutdown.

Besides, internal soft-start prevents inrush current at fast power-on. This device uses Constant On-Time

(COT) control mode which provides fast load transient response. Internal loop compensation function

reduces the external compensator components and simplifies the design process.

The ACE7259C requires a minimum number of readily available standard external components and is

available in a SOT23-6 packag

e.

Features

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Wide Input Voltage Range: 4.4V to 18V

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2.5A Output Current

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0.6V Reference Voltage

⚫

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10μA(typ) Shutdown Current

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Integrated internal compensation

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High Efficiency at Light Load

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Internal 2ms Soft-Start

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Cycle-by-Cycle Current Limit

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Over-Temperature Protection with Auto Recovery

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Under Voltage Lockout (UVLO)

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Hiccup Short Circuit Protection

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Available in a SOT23-6 Package

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RoHS Compliant

Application

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Distributed Power System

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Flat Panel Television and Monitors

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STB (Set-Top-Box)

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Networking, XDSL Modem