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NCP1550SN25T1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
NCP1550
http://onsemi.com
10
Figure 23. Line Transient Response for
V
OUT
= 3.3 V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Input Voltage, 2.0 V/Division
Figure 24. Line Transient Response for
V
OUT
= 2.5 V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Input Voltage, 2.0 V/Division
(V
IN
= 4.0 to 5.0 V, L = 3.3 mH, C
OUT
= 33 mF, I
LOAD
= 1.0 A) (V
IN
= 3.0 to 5.0 V, L = 5.6 mH, C
OUT
= 33 mF, I
LOAD
= 1.0 A)
Figure 25. Line Transient Response for
V
OUT
= 1.8 V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Input Voltage, V
IN
, 2.0 V/Division
Figure 26. Load Transient Response for
V
OUT
= 3.3 V
Upper Trace: Output Voltage Ripple, 200 mV/Division
Lower Trace: Load Current, I
LOAD
, 500 mA/Division
(V
IN
= 3.0 to 5.0 V, L = 6.8 mH, C
OUT
= 33 mF, I
LOAD
= 1.0 A) (V
IN
= 5.0 V, I
LOAD
= 100 mA to 1.0 A, L = 3.3 mH,
C
OUT
= 33 mF)
NCP1550
http://onsemi.com
11
Figure 27. Load Transient Response for
V
OUT
= 2.5 V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
LOAD
, 500 mA/Division
(V
IN
= 5.0 V, I
LOAD
= 100 mA to 1.0 A, L = 5.6 mH,
C
OUT
= 33 mF)
Figure 28. Load Transient Response for
V
OUT
= 1.8 V
Upper Trace: Output Voltage Ripple, 100 mV/Division
Lower Trace: Load Current, I
LOAD
, 500 mA/Division
(V
IN
= 5.0 V, I
LOAD
= 100 mA to 1.0 A, L = 6.8 mH,
C
OUT
= 33 mF)
0
0.4
0.8
1.2
1.6
2.0
−50 −25
0 25 50 75 100
Figure 29. Off−Stage Current versus Ambient
Temperature
T
A
, AMBIENT TEMPERATURE (°C)
I
OFF
, OFF−STATE CURRENT (mA)
3.3 V
2.5 V
1.8 V
20
30
40
50
60
70
−50 −25 0 25 50 75 100
2.5 V 3.3 V 1.8 V
Figure 30. Operating Current versus Ambient
Temperature
T
A
, AMBIENT TEMPERATURE (°C)
I
DD
, OPERATING CURRENT (mA)
450
500
550
600
650
700
−50 −25 0 25 50 75 100
Figure 31. Oscillator Frequency versus Ambient
Temperature
T
A
, AMBIENT TEMPERATURE (°C)
F
OSC
, OSCILLATOR FREQUENCY (kHz)
1.8 V
2.5 V
3.3 V
200
250
300
350
400
450
−50 −25 0 25 50 75 100
Figure 32. PWM/PFM Switch ON Time Threshold
versus Ambient Temperature
T
A
, AMBIENT TEMPERATURE (°C)
2.5 V
3.3 V
1.8 V
T
ON(PFM)
, PWM/PFM SWITCH ON
TIME THRESHOLD (ns)
V
IN
= 5.0 V
V
CE
= 5.0 V
V
IN
= 5.0 V
V
IN
= 5.0 V
NCP1550
http://onsemi.com
12
1.5
2.0
2.5
3.0
3.5
3.25
3.27
3.29
3.31
3.33
3.35
−50 −25 0 25 50 75 100
T
A
, AMBIENT TEMPERATURE (°C)
Figure 33. NCP1550SN33T1 Output Voltage versus
Ambient Temperature
V
OUT
, OUTPUT VOLTAGE (V)
V
OUT
, OUTPUT VOLTAGE (V)
2.45
2.47
2.49
2.51
2.53
2.55
−50 −25 0 25 50 75 10
0
T
A
, AMBIENT TEMPERATURE (°C)
Figure 34. NCP1550SN25T1 Output Voltage
versus Ambient Temperature
1.75
1.77
1.79
1.81
1.83
1.85
V
OUT
, OUTPUT VOLTAGE (V)
−50 −25 0 25 50 75 100
T
A
, AMBIENT TEMPERATURE (°C)
Figure 35. NCP1550SN18T1 Output Voltage versus
Ambient Temperature
−100
−90
−80
−70
−60
−50
−40
−50 −25 0 25 50 75 10
0
T
A
, AMBIENT TEMPERATURE (°C)
Figure 36. NCP1550 EXT “H” Output Current
versus Ambient Temperature
I
EXTH
, EXT “H” OUTPUT CURRENT (mA)
50
80
110
140
170
200
−50 −25 0 25 50 75 100
T
A
, AMBIENT TEMPERATURE (°C)
Figure 37. NCP1550 EXT “L” Output Current
versus Ambient Temperature
I
EXTH
, EXT “L” OUTPUT CURRENT (mA)
−50 −25 0 25 50 75 10
0
I
VOUT
, INPUT CURRENT INTO V
OUT
PIN (mA)
Figure 38. NCP1550 Input Current into
V
OUT
Pin versus Ambient Temperature
T
A
, AMBIENT TEMPERATURE (°C)
2.5 V
3.3 V
1.8 V
2.5 V
3.3 V
1.8 V
2.5 V
3.3 V
1.8 V
V
IN
= 5.0 V V
IN
= 5.0 V
V
IN
= 5.0 V
V
EXT
= V
IN
− 0.4 V
V
IN
= 5.0 V
V
EXT
= 0.4 V
V
IN
= 5.0 V
V
IN
= 5.0 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

NCP1550SN25T1

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Buy NCP1550SN25T1
Manufacturer:
ON Semiconductor
Description:
IC REG CTRLR BUCK 5TSOP
Lifecycle:
New from this manufacturer.
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