ACE740E Datasheet, PDF (1/8 Pages) ACE Technology Co., LTD. – 4A, 18V High Efficiency Synchronous Step-Down Converter

ACE740E
4A, 18V High Efficiency Synchronous Step-Down Converter
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
• Wide Input Operating Range from 4.5V to 18V
• High Efficiency: Up to 95% at Light Load
• Capable of Delivering 4A
• No External Schottky Diode Needed
• Inductor Short Circuit Protection
• Current Mode control
• 0.923V Reference for Low Output voltages
• Logic Control Shutdown
• Thermal shutdown and UVLO
• Available in ESOP8 Package
Application
• LCD TVs
• Notebook computers
• FPGA power supplies
• LED drivers
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.)
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