AAT2522

Dual High-Current, Low-Noise, Step-Down Regulator

DATA SHEET

1

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

202032A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012

General Description

The AAT2522 is a SwitchReg, dual, high-current, step-

down converter with an input voltage range of 2.7V to

The 1.4MHz switching frequency enables the use of small

external components. The compact footprint and high

efficiency make the AAT2522 an ideal choice for portable

applications.

The AAT2522 delivers load currents up to 3.0A maximum

MOSFETs and 100% duty cycle operation make the

AAT2522 an ideal choice for high output-voltage, high

current applications which require a low dropout thresh-

old.

The AAT2522 provides excellent transient response and

high output accuracy across the operating range. The

AAT2522’s unique architecture requires no external com-

pensation components, and produces reduced ripple and

spectral noise. Over-temperature and short-circuit pro-

tection safeguard the AAT2522 and system components

from damage.

The AAT2522 is available in a Pb-free, space-saving

16-pin 3mm x 4mm TDFN package. The product is rated

over an operating temperature range of -40°C to +85°C.

Features

• Dual 3.0A Peak Output Current Regulators

• 2.7V to 5.5V Input Voltage Range

• Adjustable Output Voltage (0.6V to V

• 100% Duty-Cycle, Low-Dropout Operation

• Integrated 120mΩ High-Side Power MOSFET

• Integrated 85mΩ Low-Side Power MOSFET

• Low Noise Light Load Mode

• No External Compensation Required

• Very Low 90μA No-Load Operating Current

• <1μA Shutdown Current

• Up to 95% Efficiency

• 1.4MHz Switching Frequency

• Overload and Short-Circuit Protection

• Over-Temperature Protection

• Internal Voltage Ramped Soft-Start

• Temperature Range: -40°C to +85°C

• 16-pin 3mm x 4mm TDFN Package

Applications

• Digital Cameras and Camcorders

• Netbooks and Nettops

• Portable DVD and Media Devices

• Power-Over-Ethernet

• Set-Top Boxes

Typical Application

IN1

VCC1

AGND1

LX1

FB1

PGND1

IN2

VCC2

PGND2

AGND2

LX2

FB2

EP

EN1

EN2

V

IN

2.7V to 5.5V

V

OUT1

0.6V to V

IN

V

OUT2

0.6V to V

IN

ON/OFF

ON/OFF

AAT2522