NCP1546 ON Semiconductor, NCP1546 Datasheet - Page 2

• Manufacturer Part Number: NCP1546
• Description: Buck Regulator
• Manufacturer: ON Semiconductor

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.
*See table above for load dump.
MAXIMUM RATINGS*
MAXIMUM RATINGS
Peak Transient Voltage (31 V Load Dump @ V
Operating Junction Temperature Range, T
Lead Temperature Soldering:
Storage Temperature Range, T
ESD
Package Thermal Resistance
Vout (3.3 V)
Pin Name
V
BOOST
SHDNB
IN
100 mF
SYNC
V
V
V
(DC)*
SW
FB
C
C3
+
(Voltages are with respect to GND)
Figure 1. Application Diagram, 4.5 V − 16 V to 3.3 V @ 1.0 A Converter
R2
127
R3
205
S
27 mH
D1
L1
7.0 V
7.0 V
7.0 V
7.0 V
V
40 V
40 V
40 V
Rating
D2
Max
J
SHDNB
18−Lead DFN Junction−to−Ambient, R
IN
C1
1 mF
= 14 V)
SYNC
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−0.6 V/−1.0 V, t < 50 ns
NCP1546
(Charge Device Model)
(Human Body Model)
Vsw
SHDNB
NC
NC
NC
NC
SYNC
GND
−0.3 V
−0.3 V
−0.3 V
−0.3 V
−0.3 V
−0.3 V
2
V
MIN
U1
NCP1546
(Machine Model)
Reflow: (Note 1)
10k
R6
BOOST
Vfb
NC
NC
NC
NC
Vin
Vc
qJA
0.1 mF
C4
I
0.1 mF
SOURCE
1.0 mA
1.0 mA
1.0 mA
1.0 mA
4.0 A
N/A
N/A
C5
−65 to +150
0 to +125
240 peak
(Note 2)
Value
>1.0
200
2.0
45
16
+
C2
330 mF
Vin (7 V to 16 V)
100 mA
1.0 mA
1.0 mA
1.0 mA
1.0 mA
10 mA
4.0 A
I
SINK
°C/W
Unit
kV
kV
°C
°C
°C
V
V