ACE725E

24V , 1.2A

High Efficiency Step-Down Converter

VER 1.1

1

Description

The ACE725E is a wide input range, high-efficiency, high frequency DC-to-DC step-down switching

regulator, capable of delivering up to 1.2A of output current. With a fixed switching frequency of 1.4MHz,

this current mode PWM controlled converter allows the use of small external components, such as

ceramic input and output caps, as well as small inductors, while still providing low output ripples. Together

with the tiny package ACE725E is in, without external compensation components, it is an ideal solution for

system designer with stringent board space requirements. ACE725E also employs a proprietary control

scheme that switches the device into a power save mode during light load, thereby extending the range of

high efficiency operation.

ACE725E is available SOT23-6 Packages.

Features

 Wide Input Operating Range from 4.5V to 24V

 High Efficiency:Up to 94%

 Capable of Delivering 1.2A

 1.4MHz Switching frequency

 No External Compensation Needed

 Current Mode control

 Logic Control Shutdown

 Thermal shutdown and UVLO

 Available in SOT23-6 Package

Application

 Set top boxes

 Security Surveillance systems

 LED lighting

Absolute Maximum Rating

Parameter

Value

IN Voltage

–0.3V to 26V

SW ,EN Voltage

–0.3V to VIN+0.3

BST Voltage

–0.3V to SW+6V

FB Voltage

–0.3V to 6V

SW to ground current

Internally limited

Operating Temperature Range

–40°C to 85°C

Storage Temperature Range

.

–55°C to 150°C

Thermal Resistance

SOT23-6

220

110

°C/W

(Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.)