MIC2940A-5.0WT datasheet(5/11 Pages) MICREL

Part #	MIC2940A-5.0WT

Description	1.2A Low-Dropout Voltage Regulator

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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5 / 11 page

Micrel, Inc.

MIC2940A/2941A

July 2007

5

M9999-071307

Typical Characteristics

0

100

200

300

400

500

0.00 0.25 0.50 0.75 1.00 1.25

OUTPUT CURRENT (A)

Dropout Voltage

vs. Output Current

0

200

400

600

800

1000

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Dropout Voltage

vs. Temperature

I

LOAD = 1.25A

0

1

2

3

4

5

6

01234

56

INPUT VOLTAGE (V)

Dropout

Characteristics

I

LOAD =5mA

I

LOAD = 1.25A

0.1

1

10

40

11

0

100

1000

10000

OUTPUT CURRENT (mA)

Ground Current

vs. Output Current

10A

0

100

200

300

400

0

1

2

3

45

67

8

SUPPLY VOLTAGE (V)

Ground Current

vs. Supply Voltage

FIXED 5V

I

LOAD =5mA

0

10

20

30

40

50

02468

10

INPUT VOLTAGE (V)

Ground Current

vs. Supply Voltage

FIXED 3.3V DEVICE

I

LOAD =1.25A

0.00

0.10

0.20

0.30

0.40

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Ground Current

vs. Temperature

I

LOAD =5mA

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Ground Current

vs. Temperature

I

LOAD =100mA

0

10

20

30

40

50

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Ground Current

vs. Temperature

I

LOAD =1.25A

I

LOAD = 100mA

3.20

3.22

3.24

3.26

3.28

3.30

3.32

3.34

3.36

3.38

3.40

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Fixed 3.3V Output Voltage

vs. Temperature

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

-60 -30

0

30 60

90 120 150

TEMPERATURE (°C)

Short Circuit and Maximum

Current vs. Temperature

V

OUT =VNOMINAL –0.5V

V

OUT =0V

FIXED 3.3V

VERSION

3SAMPLES

-200

0

200

400

600

800

1000

-30 -20 -10

0

10

20

30

INPUT VOLTAGE (V)

Ground Current

vs. Input Voltage

R

LOAD = 100

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