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NCP1589AMNTXG Datasheet(PDF) 2 Page - ON Semiconductor

Part # NCP1589AMNTXG
Description  Low Voltage Synchronous Buck Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1589AMNTXG Datasheet(HTML) 2 Page - ON Semiconductor

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NCP1589A, NCP1589B
http://onsemi.com
2
Figure 1. Typical Application Diagram
BOOT
UG
LX
VCC
GND
FB
VOS
LG
PGOOD
VIN = 2.5 V − 13.2 V
VCC = 4.5 V − 13.2 V
0.1mF
4.7nF
2x1800mF
1mH
1500mF
R4
3.878kW
C3
0.014mF
R3
74.2W
R1
4.12kW
C2
0.007mF
R2
17.08kW
C1
0.0015mF
1mF
COMP/EN
2x0.22mF
VBST = 4.5 V − 15 V
GND
VOUT
1.65 V
R9
R10
Figure 2. Detailed Block Diagram
POR
UVLO
PWM
OUT
LATCH
7
BOOT
UG
LX
LG
GND
CLOCK
RAMP
OSC
OSC
FB
VOCP
FAULT
FAULT
FAULT
SOFT
START
VOS
PGOOD
MONITOR
OV and UV
PGOOD
0.8 V
(Vref)
0.8 V
(Vref)
COMP/EN
+
−
+
−
Q
R
S
8
9
10
+
−
+
−
VCC
2 V
VCC
±10% of Vref
±25% of Vref
6
1
3
2
4
5
+
−


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