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NCP1573 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1573
Description  Low Voltage Synchronous Buck Controller
Download  17 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1573 Datasheet(HTML) 2 Page - ON Semiconductor

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NCP1573
http://onsemi.com
2
Figure 1. Applications Circuit
GND
VFB
GATE(L)
GATE(H)
VCC
PWRGD
PGDELAY
COMP
NCP1573
C13
0.1 ?F
C12
0.01 ?F
R1
50 k
12 V
VLOGIC
5.0 V
NTD4302
NTD4302
2.7 ?H
3.3 k
+
+
33 ?F/8.0 V/1.6 Arms
56 ?F/4.0 V/1.6 Arms
SP?CAP 40 m?
GND
Q1
Q2
+
+
C3
C2
C1
+
+
+
GND
2.5 V/10 A
C8
C9
C10
C11
5.1 k
R3
R5
L1
100 pF
C6
C4
0.47 ?F
PWRGD
10
R4
MAXIMUM RATINGS*
Rating
Value
Unit
Operating Junction Temperature
150
°C
Storage Temperature Range
?65 to 150
°C
ESD Susceptibility (Human Body Model)
2.0
kV
Lead Temperature Soldering:
Reflow: (Note 1)
230 peak
°C
Moisture Sensitivity Level
2
?
Package Thermal Resistance, SO?8
Junction?to?Case, R?JC
Junction?to?Ambient, R?JA
48
165
°C/W
°C/W
1. 60 second maximum above 183°C.
*The maximum package power dissipation must be observed.
MAXIMUM RATINGS
Pin Name
Pin Symbol
VMAX
VMIN
ISOURCE
ISINK
IC Power Input
VCC
15 V
?0.5 V
N/A
1.5 A Peak
450 mA DC
Compensation Capacitor
COMP
6.0 V
?0.5 V
10 mA
10 mA
Voltage Feedback Input
VFB
6.0 V
?0.5 V
1.0 mA
1.0 mA
Power Good Output
PWRGD
15 V
?0.5 V
1.0 mA
20 mA
Power Good Delay
PGDELAY
6.0 V
?0.5 V
1.0 mA
10 mA
High?Side FET Driver
GATE(H)
15 V
?0.5 V
?2.0 V for 50 ns
1.5 A Peak
200 mA DC
1.5 A Peak
200 mA DC
Low?Side FET Driver
GATE(L)
15 V
?0.5 V
?2.0 V for 50 ns
1.5 A Peak
200 mA DC
1.5 A Peak
200 mA DC
Ground
GND
0.5 V
?0.5 V
1.5 A Peak
450 mA DC
N/A


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