LMK212BJ226MG-T datasheet(8/18 Pages) AMS

Part #	LMK212BJ226MG-T

Description	3A 20V Step-Down Converter plus 1A LDO

Download	18 Pages

Scroll/Zoom	100%

Manufacturer	AMS [Advanced Monolithic Systems Ltd]

Direct Link	http://www.ams-semitech.com

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8 / 18 page

AMS4123

3A 20V Step-Down Converter + 1A LDO

3/5/2010

www.advanced-monolithic.com

Phone (925) 443-0722

8

Fax (925) 443-0723

Typical Characteristics

220

240

260

280

300

-45

-10

25

60

95

130

Ambient Temperature (ºC)

Switching Frequency Temperature

Variation VSW out=2.5V, Vin=12V

-2.4

-1.6

-0.8

0.0

0.8

-50

-10

30

70

110

150

Ambient Temperature (ºC)

Feedback Voltage Temperature

Variation

FBLDO

FBSW

ILDO=Isw=0

VLDO out=1.8V, VSW out=2.5V

0

0.3

0.6

0.9

1.2

0

0.7

1.42.1

2.83.5

Current (A)

Step-Down Converter Power Switch

Saturation Voltage Vin=12V

Tamb = 25⁰ C

Mounted on Eval. Board

1 msec/div

Start-Up Response Vin=20V

VSW out

1V /div

VLDO out

1V /div

Ven

5V /div

IL

2A/div

2 msec/div

Start-Up Response

Enable=Vin=12V

VLDO out

1V /div

Vin

10V /div

IL

2A/div

•

400 µsec/div

Start-Up Response Vin=12V

VSW out

1V /div

VLDO out

1V /div

Ven

5V /div

IL

2A/div

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LMK212BJ226MG-T Datasheet(PDF) 8 Page - Advanced Monolithic Systems Ltd

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