ACE7222C

2A 2MHz 5.5V Synchronous Buck Converter

VER 1.2

1

Description

The ACE7222C is a high-efficiency, DC-to-DC step- down switching regulators, capable of delivering up to

2Aofoutput current. Thedeviceoperates from an input voltage range of 2.6V to 5.5V and provides an output

voltage from 0.6V to VIN, making the ACE7222C ideal for low voltage power conversions. Running at a

fixed frequency of 2MHz 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. This low noise output along with its

excellent efficiency achieved by the internal synchronous rectifier, making ACE7222C an ideal green

replacement for large power consuming linear regulators. Internal soft- start control circuitry reduces inrush

current.Short- circuit and thermal-overload protection improves design reliability.

Features



HighEfficiency: Up to97%



Up to 2A Max output current



2MHz Switching Frequency



Low dropout 100% Duty operation



Internal Compensation and Soft-Start



Current Mode control



Reference 0.6V





Thermal shutdown, UVLO



Available in SOT23-5

Application



Cellular phones



Digital Cameras



MP3 and MP4players



Set top boxes



Wireless and DSL Modems



USB supplied Devices in Notebooks



Portable Devices

Absolute Maximum Ratings

Parameter

Value

Max Input Voltage

8V

125

°C

-40

°C – 85°C

Maximum Power Dissipation

400mW

Package thermal resistance(

θ

200

°C/W

Storage Temperature(Ts)

-40

°C - 150°C

Lead Temperature & Time

260

°C, 10S

ESD (HBM)

>2000V

Note:Exceedtheselimitstodamage tothedevice.Exposuretoabsolute maximumrating conditionsmayaffect device reliability.