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

10

AAT2138

High Current Step-Down Converter

with High-Precision Programmable Current Limited Load Switch

DATA SHEET

Typical Characteristics

0.7

0.8

0.9

1

1.1

1.2

1.3

-40

-15

10

35

60

85

V

ENH

V

ENL

Load Switch Enable Threshold vs Temperature

Temperature (°C)

40

60

80

100

120

140

3.1

3.4

3.7

4

4.3

4.6

4.9

5.2

5.5

85°C

25°C

-40°C

Load Switch R

Input Voltage (V)

Load Switch Turn on

(V

(V

Time 400μS/div

V

OUT

2V/div

I

IN

500mA/div

V

ENSYS

2V/div

V

REGIN

2V/div

0A

0V

0V

0V

REGIN Discharge Function

(V

Time 400μs/div

V

SYSIN

2V/div

V

REGIN

2V/div

0V

0V

Load Switch Turn On

(V

(V

Time 2ms/div

V

OUT

2V/div

I

IN

500mA/div

V

ENSYS

2V/div

V

REGIN

5V/div

0A

0V

0V

0V

Load Switch Turn off

(V

(V

Time 1ms/div

V

OUT

2V/div

I

IN

50mA

/div

V

ENSYS

2V/div

V

REGIN

2V/div

0A

0V

0V

0V