MIC4690YM datasheet(5/12 Pages) MICREL

Part #	MIC4690YM

Description	500kHz 1A SuperSwitcher Buck Regulator

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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5 / 12 page

April 2005

5

MIC4690

Micrel

Typical Characteristics

1.223

1.225

1.227

1.229

1.231

1.233

1.235

1.237

1.239

1.241

1.243

-40 -20 0 20 40 60 80 100120140

TEMPERTURE (°C)

Reference Voltage

vs. Temperature

V

IN = 12V

V

OUT = 5V

I

OUT = 100mA

7.6

7.7

7.8

7.9

8

8.1

8.2

8.3

8.4

8.5

8.6

-40 -20 0 20 40 60 80 100120140

TEMPERATURE (°C)

Quiescent Current

vs. Temperature

V

IN = 12.0V

V

OUT = 5.0V

I

OUT = 0

0

10

20

30

40

50

60

70

80

0

5

10 15 20 25 30 35 40

INPUT VOLTAGE (V)

Efficiency

vs. Input Voltage

V

OUT = 5V

I

OUT = 1A

0

100

200

300

400

500

600

-50

0

50

100

150

Temperature (°C)

Frequency vs.

Temperature

V

IN = 12V

V

OUT = 5V

I

OUT = 100mA

0

50

100

150

200

250

300

-50

0

50

100

150

Temperature (°C)

Frequency Foldback

vs. Temperature

V

IN = 12V

V

OUT = 5V

I

OUT = 100mA

5.000

5.005

5.010

5.015

5.020

5.025

0

0.2 0.4 0.6 0.8

1

1.2 1.4

OUTPUT CURRENT (A)

Load Regulation

V

IN = 12V

V

OUT = 5V

4.96

4.98

5.00

5.02

5.04

5.06

0

5

10 15 20 25 30 35 40

INPUT VOLTAGE (V)

Line Regulation

V

IN = 12V

V

OUT = 5V

I

OUT = 500mA

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

-40 -20 0 20 40 60 80 100120140

TEMPERATURE (°C)

Shutdown Current

vs. Temperature

V

SHDN = VIN

= 12V

V

OUT

= 5V

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

-40

0

40

80

120

160

TEMPERATURE (°C)

Shutdown Hysteresis

vs. Temperature

ON

OFF

V

IN = 12.0V

V

OUT = 5.0V

I

OUT = 100mA

68

70

72

74

76

78

80

0

0.2 0.4 0.6 0.8

1

1.2 1.4

OUTPUT CURRENT (A)

Efficiency vs.

Output Current

V

IN = 12.0V

V

OUT = 5.0V

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