NCP1550SN30T1 datasheet(6/18 Pages) ONSEMI

Part #	NCP1550SN30T1

Description	600 kHz PWM/PFM Step-Down DC-DC Controller

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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NCP1550

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6

−0.9

−0.6

−0.3

0

0.3

0.6

0.9

10

100

1000

ILOAD, OUTPUT LOADING CURRENT (mA)

Figure 6. Output Voltage Change versus

Load Current

VIN = 5.0 V

CIN = 33 mF

COUT = 33 mF

M = NTGS3441T1

SD = MBRM120LT3

1.8 V

3.0 V

2.7 V

3.3 V

0

20

40

60

80

100

2

2.5

3

3.5

4

4.5

5

5.5

3.3 V

2.7 V

2.5 V

1.8 V

VIN, BATTERY INPUT VOLTAGE (V)

Figure 7. Output Ripple Voltage versus

Input Voltage

NCP1550

CIN = 33 mF

COUT = 33 mF

IOUT = 500 mA

SD = MBRM120LT3

0

20

40

60

80

100

2

2.5

3

3.5

4

4.5

5

5.5

VIN, INPUT VOLTAGE (V)

Figure 8. No Load Operating Current versus

Input Voltage

1.8 V

1.9 V

3.0 V

3.3 V

2.7 V

NCP1550

CIN = 33 mF

COUT = 33 mF

CE = VIN

SD = MBRM120LT3

TYPICAL OPERATING CHARACTERISTICS

−0.9

−0.6

−0.3

0

0.3

0.6

0.9

2

2.5

3

3.5

4

4.5

5

5.5

VIN, INPUT VOLTAGE (V)

Figure 9. Output Voltage Change versus

Input Voltage

NCP1550

VIN = 5.0 V

CIN = 33 mF

COUT = 33 mF

IOUT = 500 mA

SD = MBRM120LT3

3.3 V

3.0 V

2.7 V

1.8 V

1.9 V

0

15

30

45

60

75

90

1

10

100

1000

3.3 V

2.7 V

2.5 V

1.8 V

1.9 V

ILOAD, OUTPUT CURRENT (mA)

Figure 10. Output Ripple Voltage versus

Output Current

NCP1550

VIN = 5.0 V

CIN = 33 mF

COUT = 33 mF

IOUT = 500 mA

SD = MBRM120LT3

1.9 V

2.5 V

1.9 V

3.0 V

2.5 V

3.0 V

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NCP1550SN30T1 Datasheet(PDF) 6 Page - ON Semiconductor

NCP1550SN30T1 Datasheet(HTML) 6 Page - ON Semiconductor

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