ACE724 Datasheet, PDF (1/10 Pages) ACE Technology Co., LTD. – 18V (30V spike) 2A Synchronous PFM/PWM Buck Converter

ACE724
18V (30V spike) 2A Synchronous PFM/PWM Buck Converter
Description
The ACE724 is a high efficiency current-mode synchronous, 18V/2A buck converter. Its input voltage
ranges from 4.5V to 18V and it provides an adjustable regulated output voltage from 0.923V to 15V while
delivering up to 2A of output current.
The internal synchronous switches increase efficiency and eliminate the need for an external Schottky
diode. The switching frequency is set to 340KHz. And the ACE724 will automatically switch between PFM
and PWM mode based on the load current, thus to enhance the converter efficiency at light load.
ACE724 consists of many protection block such as UVLO, input voltage over voltage protection to stand
much higher input voltage spike, thermal protection and output short circuit protection.
Features
 Adjustable Output Voltage, Vfb=0.923V
 Maximum output current is 2A
 Range of operation input voltage: Max 18V
 Withstand input voltage spike >30V
 Standby current: 1mA (typ.)
 Operating current at zero load: 1.2mA (typ.)
 Line regulation: 0.1%/V (typ.)
 Load regulation: 10mV (typ.)
 High efficiency, up to 95%
 Environment Temperature: -20℃~85℃
Application
 Set-top-box
 Consumer Electronic Device for automobile
 LCD Monitor and LCD TV
 Portable DVD
 ADSL Modem, WLAN router
 Other 12V or double cell Li-ion battery powered device
Absolute Maximum Ratings
Parameter
Symbol Value Unit
Input voltage
30 V
Ambien temperature
T_A
Package thermal resistance
SOP-8
Θ_JC
ESOP-8
Max Operation junction temperature Tj
-20~85 ℃
45 _℃/W
10
125 _℃
ESD (HBM)
>2000 _V
Storage temperature range
T_S -40~125 _℃
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
VER 1.3 1