ACE7263C

27V 2A 500KHz Synchronous Step-Down DC/DC Converter

VER 1.2

1

Description

The ACE7263C is a fully integrated, synchronous rectified step-down converter that provides wide

4.2V to 27V input voltage range and 2A continuous load current capability. The ACE7263C can operate at

PFM mode to achieve high efficiency and reduce power loss at light load. In shutdown mode, the Max

supply current is about 3μA.

The ACE7263C 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 slope compensated

current mode control which provides fast load transient response. Internal loop compensation function

reduces the external compensator components and simplifies the design process.

The ACE7263C requires a minimum number of readily available standard external components and is

available in ESOP-8 (Exposed Pad) package and provides good thermal conductance.

Features

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Wide input voltage range: 4.2V to 27V

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2A output current

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0.8V reference voltage

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Low RDS(ON) integrated powe

r MOSFET (180/110mΩ)

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3μA(Max) shutdown curren

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Integrated internal compensation

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High efficiency at light load

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Internal 1ms 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 ESOP8 exposed pad 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