ACE722 Datasheet, PDF (1/8 Pages) ACE Technology Co., LTD. – 2A Step-down DC-DC Converter

ACE722
2A Step-down DC-DC Converter
Description
ACE722 is a current mode PWM step-down DC-DC converter, which has an internal 2A power switch. It
has the wide input voltage range of 3.6V to 20V, so it can suit for regulating a wide variety of power
source.
ACE722 make of a PWM control circuit, a reference voltage unit, an error amplifier, a protection circuit,
Chip Enable circuit, and under voltage lockout circuit. A low ripple, high efficiency step-down DC-DC
converter can be easily composed of this IC with only several external components, or an inductor, a
diode and capacitors. Output Voltage can be adjusted with external resistors.
ACE722 has the cycle-by-cycle current limit circuit; current limiting provides protection against shorted
output. The low current (<5uA) shutdown provides complete output disconnect, enabling easy power
management in battery powered systems.
Features
 Range of Input Voltage: 3.6V~20V
 Built-in 90mΩ Power MOSFET
 <5uA Shutdown Current
 Oscillation Frequency: 500KHz
 High efficiency: 90%
 2.5A Peak Current Limit Cycle by Cycle
 Operating Temperature Range: -40℃ ~85℃
 Demo Board Available
Application
 Power source for hand-held communication equipment, cameras video instruments such as VCRs,
camcorders.
 Power source for battery-powered equipment
 Power source for household electrical appliance
Absolute Maximum Ratings
Parameter
Max
Unit
Supply Voltage
23
V
SW Pin Voltage
25
V
CE Pin Voltage
-0.3V to Vin+0.3V V
FB Pin Voltage
-0.3V to 6V V
Operating Ambient Temperature Range -40 ^OC to 85 ^OC ^OC
Storage temperature
- 65 ^OC to 150 ^OC ^OC
Thermal resistance: θ_JA
150
O_C/W
VER 1.6 1