MIC39101-2.5BM datasheet(5/12 Pages) MICREL

Part #	MIC39101-2.5BM

Description	1A Low-Voltage Low-Dropout Regulator

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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5 / 12 page

August 2005

5

M9999-082505-B

MIC39100/39101/39102

Micrel

Typical Characteristics

0

20

40

60

80

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

FREQUENCY (Hz)

P ower S upply

R ejection R atio

I

OUT = 1A

C

OUT = 10µF

C

IN = 0

V

IN = 5V

V

OUT = 3.3V

10

100

1k

10k

100k

1M

0

20

40

60

80

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

FREQUENCY (Hz)

P ower S upply

R ejection R atio

I

OUT = 1A

C

OUT = 47µF

C

IN = 0

V

IN = 5V

V

OUT = 3.3V

10

100

1k

10k

100k

1M

0

20

40

60

80

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

FREQUENCY (Hz)

P ower S upply

R ejection R atio

I

OUT = 1A

C

OUT = 10µF

C

IN = 0

V

IN = 3.3V

V

OUT = 2.5V

10

100

1k

10k

100k

1M

0

20

40

60

80

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

FREQUENCY (Hz)

P ower S upply

R ejection R atio

I

OUT = 1A

C

OUT = 47µF

C

IN = 0

V

IN = 3.3V

V

OUT = 2.5V

10

100

1k

10k

100k

1M

0

50

100

150

200

250

300

350

400

450

500

0

250

500

750

1000 1250

OUTPUT CURRENT (mA)

Dropout V oltage

vs . Output C urrent

2.5V

3.3V

T

A

= 25°C

1.8V

300

350

400

450

500

550

600

-40 -20 0

20 40 60 80 100 120

TEMPERATURE (°C)

Dropout V oltage

vs . T emperature

3.3V

2.5V

I

LOAD = 1A

1.8V

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

2

2.3

2.6

2.9

3.2

3.5

SUPPLY VOLTAGE (V)

Dropout C harac teris tic s

(2.5V )

ILOAD =100mA

ILOAD =750mA

ILOAD =1A

2.4

2.6

2.8

3.0

3.2

3.4

3.6

2.8

3.2

3.6

4.0

4.4

SUPPLY VOLTAGE (V)

Dropout C harac teris tic s

(3.3V )

ILOAD =100mA

ILOAD =750mA

ILOAD =1A

0

2

4

6

8

10

12

14

0

200

400

600

800

1000

OUTPUT CURRENT (mA)

G round C urrent

vs . Output C urrent

2.5V

3.3V

1.8V

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0

2

4

6

8

SUPPLY VOLTAGE (V)

G round C urrent

vs . S upply V oltage (2.5V )

ILOAD =100mA

ILOAD =10mA

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0

2

4

6

8

SUPPLY VOLTAGE (V)

G round C urrent

vs . S upply V oltage (3.3V )

ILOAD =100mA

ILOAD =10mA

0

5

10

15

20

25

30

35

0

2

4

6

8

SUPPLY VOLTAGE (V)

G round C urrent

vs . S upply V oltage (2.5V )

ILOAD =1A

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