ACE740E

4A, 18V High Efficiency Synchronous Step-Down Converter

VER 1.1

1

Description

The ACE740E is a wide input range, high-efficiency, DC-to- DC step-down switching regulator, capable

of delivering up to 4A of output current. Current mode PWM control 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. On top of the integrated internal synchronous rectifier that eliminates external Schottky

diode, ACE740E 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. Therefore, ACE740E is a

much superior solution in comparison to other competitions in terms of efficiency and cost. Overall,

ACE740E is a highly efficient and robust solution for DC-DC step-down applications that requires wide

input ranges.

ACE740E is available ESOP8 Packages..

Features

Application

Absolute Maximum Ratings

Parameter

Value

IN Voltage

-0.3V~20V

SW, EN Voltage

-0.3V~VIN+0.3V

BST Voltage

-0.3V~SW+6V

FB Voltage

-0.3V~6V

SW to ground current

Internally limited

Operating Temperature Range

–40°C~ 85°C

Storage Temperature Range

.–55°C~ 150°C

(Note: Exceeding these limits

may damage the device. Exposure to absolute maximum rating conditions for long periods may

affect device reliability.)