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

201998B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013

AAT1162

12V, 1.5A Step-Down DC/DC Converter

DATA SHEET

General Description

The AAT1162 is an 800kHz high efficiency step-down

DC/DC converter. With a wide input voltage range of

4.0V to 13.2V, the AAT1162 is an ideal choice for dual-

cell Lithium-ion battery-powered devices and mid-pow-

er-range regulated 12V-powered industrial applications.

The internal power switches are capable of delivering up

to 1.5A to the load.

The AAT1162 is a highly integrated device, simplifying

system-level design. Minimum external components are

required for the converter.

The AAT1162 optimizes efficiency throughout the entire

load range. It operates in a combination PWM/Light Load

mode for improved light-load efficiency. The high switch-

ing frequency allows the use of small external compo-

nents. The low current shutdown feature disconnects the

1μA.

The AAT1162 is available in a Pb-free, space-saving,

thermally-enhanced 16-pin TDFN34 package and is

rated over an operating temperature range of -40°C to

+85°C.

Features

• Input Voltage Range: 4.0V to 13.2V

• Up to 1.5A Load Current

• Fixed or Adjustable Output:

• Low 150μA No-Load Operating Current

• Less than 1μA Shutdown Current

• Up to 96% Efficiency

• Integrated Power Switches

• 800kHz Switching Frequency

• Soft Start Function

• Short-Circuit and Over-Temperature Protection

• Minimum External Components

• TDFN34-16 Package

• Temperature Range: -40°C to +85°C

Applications

• Distributed Power Systems

• Industrial Applications

• Laptop Computers

• Portable DVD Players

• Portable Media Players

• Set-Top Boxes

• TFT LCD Monitors and HDTVs

Typical Application

LX

IN

AIN

AAT1162

EN

PGND

FB

AGND

LDO

COMP

C3

22μF

R4

10

R5

24k

C2

0.1μF

C8

1μF

C9

1μF

C7

330pF

L1

2.2 to 4.7μH

Output:

0.6V min,

1.5A max

C6

10μF

Input:

4.0V ~ 13.2V

DGND