MIC22705 datasheet(8/28 Pages) MICREL

8 / 28 page

Micrel, Inc.

MIC22705

December 2010

M9999-121710-A

Typical Characteristics (Continued)

Efficiency

vs. Output Current

100

2345

OUTPUT CURRENT (A)

3.3VIN

5.0VIN

VOUT = 1.8V

Feedback Voltage

vs. Output Current

0.693

0.697

0.700

0.704

0.707

OUTPUT CURRENT (A)

VIN = 5.0V

VOUT = 1.8V

Line Regulation

vs. Output Current

0.0%

0.1%

0.2%

0.3%

0.4%

0.5%

012

OUTPUT CURRENT (A)

VIN = 2.9V to 5.5V

VOUT = 1.8V

Switching Frequency

vs. Output Current

800

900

1000

1100

1200

2345

OUTPUT CURRENT (A)

VIN = 5.0V

VOUT = 1.8V

IOUT = 0A

Output Voltage (VIN = 3.3V)

vs. Output Current

2.8

2.9

3.0

3.1

3.2

3.3

3.4

012

OUTPUT CURRENT (A)

VIN = 3.3V

VFB < 0.7V

Output Voltage (VIN = 5.0V)

vs. Output Current

4.6

4.7

4.8

4.9

5.0

5.1

5.2

OUTPUT CURRENT (A)

VIN = 5.0V

VFB < 0.7V

Efficiency (VIN = 3.3V)

vs. Output Current

100

012

OUTPUT CURRENT (A)

2.5V

1.8V

1.5V

1.2V

1.0V

0.9V

0.8V

VIN = 3.3V

IC Power Dissipation vs. Output

Current (VIN = 3.3V)

0.5

1.5

OUTPUT CURRENT (A)

VIN = 3.3V

VOUT = 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V

Case Temperature* (VIN = 3.3V)

vs. Output Current

100

OUTPUT CURRENT (A)

VIN = 3.3V

VOUT = 1.8V

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