ADP1173AR-3.3 查看數據表（PDF） - Analog Devices

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ADP1173AR-3.3

Micropower DC-DC Converter

Analog Devices 

ADP1173

Typical Circuit Applications

2 x 1.5V

CELLS

L1*

68µH

R1

100Ω

1

2

ILIM VIN SW1 3

ADP1173

FB 8

GND SW2

5

4

1N5818

1N4148

2.21MΩ

1%

4.7µF

0.1µF

118kΩ

1%

1N5818

*L1 = GOWANDA GA10-682K

COILTRONICS CTX68-4

FOR 5V INPUT CHANGE R1 TO 47Ω

CONVERTER WILL DELIVER –22V AT 40mA

22µF

220kΩ

–22V OUTPUT

7mA AT 2.0V INPUT

70% EFFICIENCY

Figure 24. 3 V–22 V LCD Bias Generator

L1*

82µH

2 x 1.5V

CELLS

1

2

ILIM VIN

SW1 3

ADP1173-5

GND SW2 SENSE 8

5

4

1N5818

+

100µF

5V OUTPUT

150mA AT 3V INPUT

60mA AT 2V INPUT

*L1 = GOWANDA GA10-822K

Figure 25. 3 V to 5 V Step-Up Converter

9V

BATTERY

100Ω

1

2

ILIM VIN SW1 3

ADP1173-5

SENSE 8

GND SW2

5

4

L1*

47µH

1N5818

+

100µF

5V OUTPUT

150mA AT 9V INPUT

50mA AT 6.5V INPUT

*L1 = GOWANDA GA10-472K

COILTRONICS CTX50-1

FOR HIGHER OUTPUT CURRENTS SEE ADP1073 DATASHEET

Figure 27. 9 V to 5 V Converter

+VIN

12V-28V

100Ω

1

2

ILIM VIN SW1 3

ADP1173-5

SENSE 8

GND SW2

5

4

L1*

220µH

1N5818

+

100µF

*L1 = GOWANDA GA10-223K

5V OUTPUT

300mA

Figure 28. +20 V to 5 V Step-Down Converter

+VIN

5V INPUT

+

22µF 100Ω

1

2

ILIM VIN SW1 3

ADP1173-5

SENSE 8

GND SW2

5

4

L1*

100µH

1N5818

+

100µF

*L1 = GOWANDA GA10-103K

COILTRONICS CTX100-1

–5V OUTPUT

75mA

Figure 26. +5 V to –5 V Converter

–12–

REV. 0

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