NCP1571 datasheet(7/16 Pages) ONSEMI

Part #	NCP1571

Description	Low Voltage Synchronous Buck Controller

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NCP1571

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7

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 9. VFB Bias Current vs. Temperature

Figure 10. Error Amp Output Currents vs. Temperature

Figure 11. COMP Voltages vs. Temperature

Figure 12. COMP Fault Mode Discharge Current vs.

Temperature

Figure 13. GATE Output Rise and Fall Times vs.

Temperature

Figure 14. GATE Non−Overlap Times vs. Temperature

0

0.90

Temperature (

°C)

0.95

1.00

1.05

1.15

1.20

20

40

60

80

100

120

1.10

0

20

Temperature (

°C)

22

24

26

32

34

36

38

20

40

60

80

120

100

30

28

0

30

Temperature (

°C)

35

40

45

50

55

20

40

60

80

100

120

GATEL Fall Time

GATEH Fall Time

GATEH Rise Time

GATEL Rise Time

GATEH to GATEL

Delay Time

GATEL to GATEH

Delay Time

0

0.40

Temperature (

°C)

20

40

60

80

100

120

0.60

0.55

0.50

0.45

0

24

Temperature (

°C)

20

40

60

80

100

120

31

30

29

28

27

26

25

Sink Current

Source Current

0

Temperature (

°C)

20

40

60

80

100

120

3.5

3.0

2.5

2.0

1.5

1.0

0.5

COMP Maximum

COMP Minimum

Voltage

COMP Fault

Threshold Voltage

Voltage

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