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

202006C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013

9

AAT2138

High Current Step-Down Converter

with High-Precision Programmable Current Limited Load Switch

DATA SHEET

Typical Characteristics

100

2.5A

mA

Step-Down Converter Load Transient

(V

C

Time 100μs/div

V

OUT(AC)

200mV/div

I

LOAD

1A/div

0V

0A

100mA

Step-Down Converter Load Transient

(V

C

Time 100μs/div

V

OUT(AC)

100mV/div

I

LOAD

500mA/div

0V

0A

1A

Step-Down Converter LineTransient

(I

C

Time 100μs/div

V

REGIN

1V/div 0V

0V

V

OUT(AC)

200mV/div

4.2V

5V

0.6

0.7

0.8

0.9

1

1.1

1.2

3.1

3.5

3.9

4.3

4.7

5.1

5.5

V

ENH

V

ENL

Load Switch Enable Threshold vs Input Voltage

Input Voltage (V)

5V

4.2V

Step-Down Converter LineTransient

(I

L = 1μH, C

Time 100μs/div

V

REGIN

1V/div

V

OUT(AC)

200mV/div

0V

0V

2.5A

100mA

Step-Down Converter Load Transient

(V

C

Time 100μs/div

V

OUT(AC)

200mV/div

I

LOAD

1A/div

0V

0A