NCP3155BDR2G datasheet(8/25 Pages) ONSEMI

Part #	NCP3155BDR2G

Description	3 A Synchronous Buck Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP3155A, NCP3155B

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TYPICAL PERFORMANCE CHARACTERISTICS

Input = 12 V

(CH2) Green = VOUT, CH1 (Yellow) = VSW

CH2: 0.5 V/div; CH1: 5.0 V/div

Time Scale: 2.0 ms/div; Figure 46

Figure 21. Current Limit Waveforms (NCP3155B)

0

10

20

30

40

50

60

70

80

90

100

110

40

25

10

5

20

35

50

65

80

95 110 125

TEMPERATURE (°C)

Figure 22. High−Side MOSFET RDS(on) vs

Temperature

Vin = 10 V − 24 V

Vin = 5.0 V

0

5

10

15

20

25

30

−40 −25 −10

5

20

35

50

65

80

95 110 125

TEMPERATURE (°C)

Figure 23. Low−Side MOSFET RDS(on) vs

Temperature

Vin = 10 V − 24 V

Vin = 5.0 V

0

0.5

1

1.5

2

2.5

3

3.5

25 30 35 40 45 50 55 60 65 70 75 80 85

1.0 V < Vout < 1.8 V

3.3 V

2.5 V

TA, AMBIENT TEMPERATURE (°C)

Figure 24. Derating Curve, 12 V Input

0

0.5

1

1.5

2

2.5

3

3.5

25 30 35 40 45 50 55 60 65 70 75 80 85

TA, AMBIENT TEMPERATURE (°C)

Figure 25. Derating Curve, 18 V Input

Vout = 5.0 V

1.8 V

3.3 V

2.5 V

0

0.5

1

1.5

2

2.5

3

3.5

25 30 35 40 45 50 55 60 65 70 75 80 85

TA, AMBIENT TEMPERATURE (°C)

Figure 26. Derating Curve, 24 V Input

3.3 V

Vout = 5.0 V

12 V

2.5 V

Vout = 5.0 V

NCP3155A

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NCP3155BDR2G Datasheet(PDF) 8 Page - ON Semiconductor

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