MIC2267YML datasheet(5/19 Pages) MICREL

Part #	MIC2267YML

Description	Input Current Limiting Synchronous Buck Regulator

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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Micrel Inc.

MIC2267

January 2011

5

M9999-011711-A

Typical Characteristics

Shutdown Current

vs. Input Voltage

0

10

20

30

40

50

60

70

80

90

100

2.5

3

3.5

4

4.5

5

5.5

6

INPUT VOLTAGE (V)

VEN = 0V

TAMB = 25°C

Shutdown Current

vs. Temperature

0

50

100

150

200

250

300

350

400

450

500

-60 -40 -20

0

20 40 60 80 100

TEMPERATURE (°C)

VEN = 0V

VIN = 5V

Supply Current

vs. Input Voltage

0

1

2

3

4

5

6

7

8

9

10

2.5

3

3.5

4

4.5

5

5.5

6

INPUT VOLTAGE (V)

VEN = 1.8V

TAMB = 25°C

FSW = 1MHz

Supply Current

vs. Temperature

0

1

2

3

4

5

6

7

8

9

10

-50 -30 -10 10 30 50 70 90 110 130

TEMPERATURE (°C)

VEN = 1.8V

VIN = 5V

FSW = 1MHz

Reference Voltage

vs. Input Voltage

0.980

0.985

0.990

0.995

1.000

1.005

1.010

1.015

1.020

2.53

3.5

4

4.55

5.56

INPUT VOLTAGE (V)

TAMB = 25°C

Reference Voltage

vs. Temperature

0.980

0.985

0.990

0.995

1.000

1.005

1.010

1.015

1.020

-50 -30 -10 10 30 50 70 90 110 130

TEMPERATURE (°C)

VIN = 5V

Enable Threshold

vs. Input Voltage

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2.5

3

3.5

4

4.5

5

5.5

6

INPUT VOLTAGE (V)

VEN HIGH

VEN LOW

Enable Threshold

vs. Temperature

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

-50 -30 -10 10305070 90 110 130

TEMPERATURE (°C)

VEN HIGH

VEN LOW

Switching Frequency

vs. Temperature

800

850

900

950

1000

1050

1100

1150

1200

-50 -30 -10 10305070 90 110 130

TEMPERATURE (°C)

VIN = 5V

MOSFET RDS(ON)

vs. Input Voltage

0

20

40

60

80

100

120

140

160

180

2.53

3.544.5

5

5.5

6

INPUT VOLTAGE (V)

PMOS RDSon

NMOS RDSon

IOUT = 0.5A

TAMB = 25°C

MOSFET RDS(ON)

vs. Temperature

0

20

40

60

80

100

120

140

160

-50 -30 -10 10 30 50 70 90 110 130

TEMPERATURE (°C)

PMOS RDSon

NMOS RDSon

IOUT = 0.5A

VIN = 5V

Output Voltage

vs. Output Current

3.280

3.285

3.290

3.295

3.300

3.305

3.310

3.315

3.320

00.5

1

1.5

2

OUTPUT CURRENT (A)

VIN = 5.5V

VOUT = 3.3V

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