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NCP1550SN27T1G
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-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
Ty
p
Max
Unit
CE (PIN 1)
CE “H” Input V
oltage
V
CEH
1.3
−
−
V
CE “L” Input V
oltage
V
CEL
−
−
0.3
V
CE “H” Input Current (V
IN
= V
CE
= 5.0 V)
I
CEH
−0.5
0
0.5
m
A
CE “L” Input Current (V
IN
= 5.0, V
CE
= 0 V)
I
CEL
−0.5
0.15
0.5
m
A
Undervoltage Lockout
Undervoltage Lockout Threshold
V
UVLO
1.60
2.20
2.40
V
Undervoltage Lockout Hysteresis
V
UVLO_HYS
−
50
−
mV
Figure 2. T
ypical 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
m
H
C
IN
= 33
m
F
C
OUT
= 33
m
F
M = NTGS3441T1
SD = MBRM120L
T3
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
m
H
C
IN
= 33
m
F
C
OUT
= 33
m
F
M = NTGS3441T1
SD = MBRM120L
T3
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
m
H
C
IN
= 33
m
F
C
OUT
= 33
m
F
M = NTGS3441T1
SD = MBRM120L
T3
TYPICAL OPERA
TING 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 V
oltage Change versus
Load Current
D
V
OUT
, OUTPUT VOL
T
AGE CHANGE (%)
V
IN
= 5.0 V
C
IN
= 33
m
F
C
OUT
= 33
m
F
M = NTGS3441T1
SD = MBRM120L
T3
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
, BA
TTERY INPUT VOL
T
AGE (V)
Figure 7. Output Ripple V
oltage versus
Input V
oltage
V
RIPPLE
, RIPPLE VOL
T
AGE (mV
p−p
)
NCP1550
C
IN
= 33
m
F
C
OUT
= 33
m
F
I
OUT
= 500 mA
SD = MBRM120L
T3
0
20
40
60
80
100
2
2.5
3
3.5
4
4.5
5
5.5
V
IN
, INPUT VOL
T
AGE (V)
Figure 8. No Load Operating Current versus
Input V
oltage
I
BA
TT
, NO LOAD OPERA
TING CURRENT (
m
A)
1.8 V
1.9 V
3.0 V
3.3 V
2.7 V
NCP1550
C
IN
= 33
m
F
C
OUT
= 33
m
F
CE = V
IN
SD = MBRM120L
T3
TYPICAL OPERA
TING 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
D
V
OUT
, OUTPUT VOL
T
AGE CHANGE (mV)
V
IN
, INPUT VOL
T
AGE (V)
Figure 9. Output V
oltage Change versus
Input V
oltage
NCP1550
V
IN
= 5.0 V
C
IN
= 33
m
F
C
OUT
= 33
m
F
I
OUT
= 500 mA
SD = MBRM120L
T3
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 V
oltage versus
Output Current
V
RIPPLE
, RIPPLE VOL
T
AGE (mV
p−p
)
NCP1550
V
IN
= 5.0 V
C
IN
= 33
m
F
C
OUT
= 33
m
F
I
OUT
= 500 mA
SD = MBRM120L
T3
1.9 V
2.5 V
1.9 V
3.0 V
2.5 V
2.5 V
3.0 V
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P17
NCP1550SN27T1G
Mfr. #:
Buy NCP1550SN27T1G
Manufacturer:
ON Semiconductor
Description:
Switching Voltage Regulators 1.8V 2A Buck PWM/PFM w/Enable Soft Start
Lifecycle:
New from this manufacturer.
Delivery:
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