NCP1442, NCP1443, NCP1444, NCP1445
3.3 V
+
+
+
10
mH
33
mF
33
mF
33
mF
1
V
SW
MBRS320T3
7
NCP1442/4
V
C
NC
SS
V
CC
V
SW
5 V
OUT
/1.5 A
5
22 k
2
3
FB
4
220 pF
0.01
mF
SS
6
GND
7.5 k
+
+
+
33
mF
33
mF
33
mF
GND
5.1 k
GND
Figure 1. Application Diagram − NCP1442/4,
3.3 V to 5.0 V/1.5 A Boost Converter
MAXIMUM RATINGS
Rating
Thermal Resistance Junction−to−Air, TO220−7 Version In Air (Socketed)
Thermal Resistance Junction−to−Air, TO220−7 Version
On Cold Plate (25°C)
Thermal Resistance Junction−to−Air, PowerFLEX on 2.1 sq. in. 1 oz.
Junction Temperature Range, T
J
Storage Temperature Range, T
STORAGE
Lead Temperature Soldering: Reflow (Note 1)
ESD, Human Body Model
Value
66.7
1.45
53.8
0 to +150
−65 to +150
230 Peak
2.0
Unit
°C/W
°C/W
°C
°C
°C
kV
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 60 second maximum above 183°C.
MAXIMUM RATINGS
Pin Name
IC Power Input
Shutdown/Sync
Loop Compensation
Voltage Feedback Input
Pin Symbol
V
CC
SS
V
C
FB
(NCP1442/4 only)
NFB
(NCP1443/5 only)
Test
GND
V
SW
V
MAX
30 V
30 V
6.0 V
10 V
V
MIN
−0.3 V
−0.3 V
−0.3 V
−0.3 V
I
SOURCE
N/A
1.0 mA
10 mA
1.0 mA
I
SINK
200 mA
1.0 mA
10 mA
1.0 mA
Negative Feedback Input
(Transient, 10 ms)
Test Pin
Ground
Switch Input
10 V
−10 V
1.0 mA
1.0 mA
6.0 V
0.3 V
40 V
−0.3 V
−0.3 V
−0.3 V
1.0 mA
9.0 A
10 mA
1.0 mA
10 mA
9.0 A
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