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http://www.elm-tech.com

Rev.1.2

• ELM9550AxE(Vout=5.0V, Fosc=55kHz, Duty=60%) L=220µH, Cin=Cout=47µF, D=DB2J208, Top=25°C

�

ELM9550AxE (VOUT=5.0V, Fosc=55kHz, Duty=60%) L=220�H, CIN=Cout=47�F, D=DB2J208, Top=25�

0.0

1.0

2.0

3.0

4.0

5.0

3.8

4.0

4.2

4.4

4.6

4.8

5.0

5.2

Iout=60mA

Iout=10mA

Iout=1mA

Vout-Vin

Vin (V)

0.1

1

10

100

1000

4.6

4.7

4.8

4.9

5.0

5.1

5.2

Vin=3.0V

Vin=0.9V

Vout-Iout

Iout (mA)

Vin=1.5V

Vin=1.1V

Vin=1.8V

0.1

1

10

100

1000

50

60

70

80

90

100

Vin=1.8V

Vin=0.9V

Efficiency-Iout

Iout (mA)

Vin=1.5V

Vin=1.1V

Vin=3.0V

-40 -20

0

20

40

60

80

4.84

4.88

4.92

4.96

5.00

5.04

5.08

45

50

55

60

65

70

75

Vout

Vout, Frequency-Top

Top (�)

Frequency

Vin=3.0V, Iout=10mA

0

10

20

30

40

50

0

0.5

1.0

1.5

2.0

2.5

Vst

Vst, Vhold-Iout

Iout (mA)

Vhold

0 2 4 6 8 10 12 14 16 18 20

4.7

4.8

4.9

5.0

5.1

5.2

5.3

0

50

100

Vout

Vin=3.0V

Load transient response

Time (ms)

Iout

1mA

1mA

50mA