参数资料
型号: NCP1546DG
厂商: ON SEMICONDUCTOR
元件分类: 稳压器
英文描述: 1.5A 170 kHz Low Voltage Buck Regulator
中文描述: SWITCHING REGULATOR, PDSO8
封装: LEAD FREE, SOIC-8
文件页数: 8/15页
文件大小: 212K
代理商: NCP1546DG
NCP1546
http://onsemi.com
2
Figure 1. Application Diagram, 4.5 V 16 V to 3.3 V @ 1.0 A Converter
D2
Vout (3.3 V)
Vin (7 V to 16 V)
D1
R2
100
R3
162
+
U1
NC
SYNC
NC
Vsw
SHDNB
NC
Vfb
Vc
BOOST
Vin
GND
EP
AD
+
R6
100k
SHDNB
SYNC
C3
100 mF
L1
27 mH
C1
1 mF
NCP1546
C4
0.1 mF
C5
0.1 mF
C2
330 mF
MAXIMUM RATINGS*
Rating
Value
Unit
Peak Transient Voltage (31 V Load Dump @ VIN = 14 V)
45
V
Operating Junction Temperature Range, TJ
0 to +150
°C
Lead Temperature Soldering:
Reflow: (Note 1)
260 peak
(Note 2)
°C
Storage Temperature Range, TS
65 to +150
°C
ESD
(Human Body Model)
(Machine Model)
(Charge Device Model)
2.0
200
>1.0
kV
V
kV
Package Thermal Resistance
18Lead DFN JunctiontoAmbient, RqJA
SO8 JunctiontoAmbient, RqJA (Note 3)
16
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
VMax
VMIN
ISOURCE
ISINK
VIN (DC)*
40 V
0.3 V
N/A
4.0 A
BOOST
40 V
0.3 V
N/A
100 mA
VSW
40 V
0.6 V/1.0 V, t < 50 ns
4.0 A
10 mA
VC
7.0 V
0.3 V
1.0 mA
SHDNB
7.0 V
0.3 V
1.0 mA
SYNC
7.0 V
0.3 V
1.0 mA
VFB
7.0 V
0.3 V
1.0 mA
*See table above for load dump.
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