NCP1444T datasheet(8/20 Pages) ONSEMI

Part #	NCP1444T

Description	4.0 A 280 kHz/560 kHz Boost Regulators

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP1442, NCP1443, NCP1444, NCP1445

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TA, AMBIENT TEMPERATURE (°C)

020

40

60

TA, AMBIENT TEMPERATURE (°C)

40

60

20

080

0

50

150

1.08

1.02

1.04

1.00

Figure 15. VC Threshold Voltage versus

Temperature

Figure 16. Shutdown Threshold versus

Temperature

Figure 17. Shutdown Delay versus Temperature

(NCP1442)

Figure 18. Shutdown Delay versus Temperature

(NCP1444)

0

TA, AMBIENT TEMPERATURE (°C)

40

60

20

080

60

0

20

100

160

120

020

40

60

80

TA, AMBIENT TEMPERATURE (°C)

0.3

80

VCC, SUPPLY VOLTAGE (V)

10

20

15

30

5

0

5

45

Figure 19. ISS versus VSS

Figure 20. Supply Current versus Supply

Voltage During Shutdown

0

05

3.0

4.0

3.5

VSS (V)

0

0.5

1.0

10

15

10

20

VCC = 2.7 V

200

250

20

25

30

2.5

25

1.14

0.4

0.6

0.8

1.0

0.9

VCC = 30 V

VCC = 12 V

40

100

VCC = 2.7 V

VCC = 30 V

VCC = 12 V

15

25

35

40

1.06

1.10

1.12

80

140

2.0

1.5

30

TA = 25°C

TA = 85°C

30

50

10

70

30

50

10

70

30

50

10

70

0.7

0.5

0.2

0.1

180

30

50

10

70

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