ACE722

2A Step-down DC-DC Converter

VER 1.6

1

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

Application

camcorders.

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

Storage temperature

- 65

Thermal resistance:

θ

JA

150