ACE729C

4A, 16V High Efficiency Synchronous Step-Down Converter

VER 1.1

1

Description

The ACE729C 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, ACE729C 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, ACE729C is a

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

ACE729C is a highly efficient and robust solution for DC-DC step-down applications that requires wide

input ranges.

Features



Wide Input Operating Range from 4.5V to 16V



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

Input Voltage

-0.3V to 17V

SW.EN Voltage

-0.3V to VIN +0.3V

BST Voltage

-0.3V to SW+6V

FB Voltage

-0.3V to 6V

SW to ground current

Internally limited

Ambient Temperature(Ta)

-40

°C - 85°C

Storage Temperature(Ts)

-55

°C - 150°C

Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may

affect device reliability.