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NCP1550SN33T1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
NCP1550
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (continued) (V
IN
= 5.0 V, T
A
= 25°C for typical value, −40°C v T
A
v 85°C for min/max values
unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
CE (PIN 1)
CE “H” Input Voltage
V
CEH
1.3 − − V
CE “L” Input Voltage V
CEL
− − 0.3 V
CE “H” Input Current (V
IN
= V
CE
= 5.0 V) I
CEH
−0.5 0 0.5
mA
CE “L” Input Current (V
IN
= 5.0, V
CE
= 0 V) I
CEL
−0.5 0.15 0.5
mA
Undervoltage Lockout
Undervoltage Lockout Threshold
V
UVLO
1.60 2.20 2.40 V
Undervoltage Lockout Hysteresis V
UVLO_HYS
− 50 − mV
Figure 2. Typical Application Diagram
SD
C
IN
L
1
2
3
5
4
V
IN
CE
EXT
V
OUT
GND
V
IN
CE
GND
V
OUT
GND
C
OUT
M
NCP1550
http://onsemi.com
5
0
20
40
60
80
100
1 10 100 1000
EFFICIENCY (%)
I
LOAD
, OUTPUT LOADING CURRENT (mA)
NCP1550SN33T1
L = 3.3 mH
C
IN
= 33 mF
C
OUT
= 33 mF
M = NTGS3441T1
SD = MBRM120LT3
Figure 3. Efficiency versus Load Current
5.0 V
V
IN
= 4.0 V
0
20
40
60
80
100
1 10 100 1000
I
LOAD
, OUTPUT LOADING CURRENT (mA)
Figure 4. Efficiency versus Load Current
EFFICIENCY (%)
NCP1550SN25T1
L = 5.6 mH
C
IN
= 33 mF
C
OUT
= 33 mF
M = NTGS3441T1
SD = MBRM120LT3
5.0 V
V
IN
= 3.0 V
4.0 V
0
20
40
60
80
100
1 10 100 1000
EFFICIENCY (%)
I
LOAD
, OUTPUT LOADING CURRENT (mA)
Figure 5. Efficiency versus Load Current
5.0 V
V
IN
= 3.0 V
4.0 V
NCP1550SN18T1
L = 6.8 mH
C
IN
= 33 mF
C
OUT
= 33 mF
M = NTGS3441T1
SD = MBRM120LT3
TYPICAL OPERATING CHARACTERISTICS
NCP1550
http://onsemi.com
6
−0.9
−0.6
−0.3
0
0.3
0.6
0.9
10 100 1000
I
LOAD
, OUTPUT LOADING CURRENT (mA)
Figure 6. Output Voltage Change versus
Load Current
D
V
OUT
, OUTPUT VOLTAGE CHANGE (%)
V
IN
= 5.0 V
C
IN
= 33 mF
C
OUT
= 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
V
IN
, BATTERY INPUT VOLTAGE (V)
Figure 7. Output Ripple Voltage versus
Input Voltage
V
RIPPLE
, RIPPLE VOLTAGE (mV
p−p
)
NCP1550
C
IN
= 33 mF
C
OUT
= 33 mF
I
OUT
= 500 mA
SD = MBRM120LT3
0
20
40
60
80
100
2 2.5 3 3.5 4 4.5 5 5.5
V
IN
, INPUT VOLTAGE (V)
Figure 8. No Load Operating Current versus
Input Voltage
I
BATT
, NO LOAD OPERATING CURRENT (
m
A)
1.8 V
1.9 V
3.0 V
3.3 V
2.7 V
NCP1550
C
IN
= 33 mF
C
OUT
= 33 mF
CE = V
IN
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
DV
OUT
, OUTPUT VOLTAGE CHANGE (mV)
V
IN
, INPUT VOLTAGE (V)
Figure 9. Output Voltage Change versus
Input Voltage
NCP1550
V
IN
= 5.0 V
C
IN
= 33 mF
C
OUT
= 33 mF
I
OUT
= 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
I
LOAD
, OUTPUT CURRENT (mA)
Figure 10. Output Ripple Voltage versus
Output Current
V
RIPPLE
, RIPPLE VOLTAGE (mV
p−p
)
NCP1550
V
IN
= 5.0 V
C
IN
= 33 mF
C
OUT
= 33 mF
I
OUT
= 500 mA
SD = MBRM120LT3
1.9 V
2.5 V
1.9 V
3.0 V
2.5 V
2.5 V
3.0 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

NCP1550SN33T1

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Manufacturer:
ON Semiconductor
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