ADP1073AN datasheet(4/16 Pages) AD

Part #	ADP1073AN

Description	Micropower DC.DC Converter Adjustable and Fixed 3.3 V, 5 V, 12 V

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ADP1073

–4–

REV. 0

–Typical Performance Characteristics

SWITCH CURRENT – Amps

1.6

0.6

0

0.1

0.7

0.2

0.3

0.4

0.5

0.6

1.4

0.8

0.4

0.2

1.2

1

SATURATION VOLTAGE

2

1.8

0.05

Figure 3. Switch ON Voltage vs.

Switch Current in Step-Down Mode

TEMPERATURE – C

120

40

085

25

70

90

70

60

50

110

80

100

Figure 6. Set Pin Bias Current vs.

Temperature

TEMPERATURE – C

70

68

40

085

25

70

58

56

66

64

62

60

Figure 9. Duty Cycle vs. Temperature

RLIM –

1400

600

0

10

1000

30

50

70

90 200 400 600 800

1200

1000

400

200

800

VIN = 1.5V

WITH L = 82 H

VIN = 3V

WITH L = 82 H

VIN = 12V

WITH L = 150 H

Figure 4. Maximum Switch Current

vs. RLIM

TEMPERATURE – C

160

140

40

085

25

70

80

60

120

100

VIN = 1.5V

Figure 7. Supply Current vs.

Temperature

TEMPERATURE – C

34.5

30

40

085

25

70

32

31.5

31

30.5

34

33.5

33

32.5

Figure 10. Switch ON Time vs.

Temperature

SWITCH CURRENT – Amps

0.1 0.2

1.2

0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1

1.2

0.6

0

1

0.8

0.4

0.2

VIN = 1.5V

VIN = 5.0V

VIN = 3.0V

VIN = 2.0V

VIN = 1.25V

VIN = 1.0V

Figure 2. Saturation Voltage vs.

Switch Current in Step-Up Mode

INPUT VOLTAGE – Volts

1000

0

1

3.5

100

10

FOR VIN > 1.6V,

RLIM = 68

1.5

2

2.5

3

Figure 5. Guaranteed Minimum

Output Current at VOUT = 5 V vs.

Input Voltage

TEMPERATURE – C

22

21

40

085

25

70

17

16

15

14

20

19

18

Figure 8. Oscillator Frequency vs.

Temperature

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