AAT2522 Datasheet, PDF (1/19 Pages) Skyworks Solutions Inc. – Dual High-Current, Low-Noise, Step-Down Regulator

DATA SHEET
AAT2522
Dual High-Current, Low-Noise, Step-Down Regulator
General Description
The AAT2522 is a SwitchReg, dual, high-current, step-
down converter with an input voltage range of 2.7V to
5.5V and an adjustable output voltage from 0.6V to V_IN.
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
output current per regulator. Ultra-low R_DS(ON) integrated
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_IN)
• 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
V_IN
2.7V to 5.5V
ON/OFF
ON/OFF
IN1
LX1
VCC1
FB1
PGND1
EN1
AGND1
AAT2522
IN2
LX2
VCC2
FB2
PGND2
EN2
AGND2
EP
V_OUT1
0.6V to V_IN
V_OUT2
0.6V to V_IN
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202032A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012
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