C3225X5R1A226M datasheet(6/18 Pages) AMS

Part #	C3225X5R1A226M

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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6 / 18 page

AMS4123

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

3/5/2010

www.advanced-monolithic.com

Phone (925) 443-0722

6

Fax (925) 443-0723

Typical Characteristics

0.0

0.8

1.6

2.4

3.2

0

5

10

15

20

25

Input Voltage (V)

No Load Input Current vs. Input Voltage

Vsw out = 2.5V, VLDO out = 1.8V

292

296

300

304

308

0

5

10

15

20

25

Input Voltage (V)

Switching Frequency vs. Input Voltage

Vsw out = 2.5V, VLDO out = 1.8V

0

0.5

1

1.5

2

0

0.2

0.4

0.6

0.8

1

Output Current (A)

VLDO Out Load Regulation

VSW out = VLDO in =2.5V, VLDO Out=1.8V

Vin=20V

Vin=15V

Vin=12V

-0.50

-0.25

0.00

0.25

0.50

0

5

10

15

20

25

Input Voltage Vin (V)

Output Voltage Error vs. Input Voltage

VSW out = VLDO in = 2.5V, VLDO out =1.8V

V LDO out

Vsw out

ILDO=0.6A

Isw=1.6A

0

0.1

0.2

0.3

0.4

0

0.2

0.4

0.6

0.8

1

LDO Output Current (V)

LDO Dropout Voltage vs. Load Current

VLDO in = VLDO out -0.1V

VLDO out programmed for 1.8V

Vin = 12V

0.57

0.58

0.59

0.60

0.61

-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

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C3225X5R1A226M Datasheet(PDF) 6 Page - Advanced Monolithic Systems Ltd

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