NCP1547 데이터 시트보기 (PDF) - ON Semiconductor
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NCP1547 Datasheet PDF : 15 Pages
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Vout (3.3 V)
D1
L1
18 mH
C1
1 mF
R3
D2
162
C3 +
100 mF
R2
100
NCP1547
R6
100k
U1
Vsw
Vin
SHDNB
BOOST
NC
NC
NC
NC
NC
NC
NC
NC
SYNC
Vc
GND
Vfb
NCP1547
C5
0.1 mF
C4
0.1 mF
Vin (7 V to 16 V)
+ C2
330 mF
SHDNB
SYNC
Figure 1. Application Diagram, 4.5 V − 16 V to 3.3 V @ 1.0 A Converter
MAXIMUM RATINGS*
Rating
Value
Unit
Peak Transient Voltage (31 V Load Dump @ VIN = 14 V)
45
V
Operating Junction Temperature Range, TJ
−40 to 150
°C
Lead Temperature Soldering:
Reflow: (Note 1)
260 peak
°C
(Note 2)
Storage Temperature Range, TS
ESD
−65 to +150
°C
(Human Body Model)
2.0
kV
(Machine Model)
200
V
(Charge Device Model)
>1.0
kV
Package Thermal Resistance
18−Lead DFN Junction−to−Ambient, RqJA
35
SO−8 Junction−to−Ambient, RqJA (Note 3)
100
°C/W
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
*The maximum package power dissipation must be observed.
1. 60 second maximum above 183°C.
2. −5°C/0°C allowable conditions.
3. 1 in2, 1 oz copper area used for heatsinking.
MAXIMUM RATINGS (Voltages are with respect to GND)
Pin Name
VIN (DC)*
BOOST
VMax
40 V
40 V
VMIN
−0.3 V
−0.3 V
VSW
VC
SHDNB
40 V
7.0 V
7.0 V
−0.6 V/−1.0 V, t < 50 ns
−0.3 V
−0.3 V
SYNC
7.0 V
−0.3 V
VFB
*See table above for load dump.
7.0 V
−0.3 V
ISOURCE
N/A
N/A
4.0 A
1.0 mA
1.0 mA
1.0 mA
1.0 mA
ISINK
4.0 A
100 mA
10 mA
1.0 mA
1.0 mA
1.0 mA
1.0 mA
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