ACE7215C

1.5A 1.5MHz Synchronous Buck Converter

VER 1.1

1

Description

The ACE7215C is a high-efficiency monolithic synchronous buck regulator using a constant frequency,

current mode architecture. The device is available in an adjustable version. Supply current with no load is

40uA and drops to <1uA in shutdown. The 2.5V to 6V input voltage range makes the ACE7215C ideally

suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation,

extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple

voltage for noise sensitive applications.

Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and

capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.

Features

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High Efficiency: Up to 96%

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2.5V to 6V Input Voltage Range

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1.5MHz Constant Frequency Operation

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No Schottky Diode Required

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Low Dropout Operation:100% Duty Cycle

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PFM Mode for High Efficiency in Light Load

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Over temperature Protected

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Low Quiescent Current: 40μA

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Short Circuit Protection

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Inrush Current Limit and Soft Start

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Application

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Cellular and Smart Phones

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Wireless and DSL Modems

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PDAs

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Portable Instruments

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Digital Still and Video Cameras

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PC Cards