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NCP3218A Datasheet(PDF) 2 Page - ON Semiconductor

Part # NCP3218A
Description  7-Bit, Programmable, 3-Phase, Mobile CPU Synchronous Buck Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP3218A Datasheet(HTML) 2 Page - ON Semiconductor

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ADP3212A, NCP3218A
http://onsemi.com
2
PIN ASSIGNMENT
1
ADP3212A
NCP3218A
(top view)
EN
PWRGD
FBRTN
FB
COMP
GND
TTSNS
BST2
DRVH2
SW2
DRVL2
PGND
PVCC
SWFB1
SW1
DRVH1
BST1
VRTT
VARFREQ
IMON
SWFB2
DRVL1
TRDET
CLKEN
Figure 1. Functional Block Diagram
Number of
Phases
VID
DAC
FBRTN
Start Up
Delay
Open
Drain
PWRGD
Start Up
Delay
PWRGD
PWRGD
Open
Drain
+
+
CSREF
DAC + 200 mV
DAC − 300 mV
Soft
Transient
Delay
Delay
Disable
DAC
+
CSREF
CSSUM
CSCOMP
ILIM
Thermal
Throttle
Control
TTSENSE
VRTT
OVP
CSREF
1.55 V
+
SS _
+
LLINE
REF
REF
SS
+
+
VEA
FB
COMP
UVLO
Shutdown
and Bias
VCC EN
GND
Oscillator
RPM RT RAMP
PWM3
Current
Balancing
Circuit
SWFB1
SWFB2
SWFB3
IMON
DPRSLP
PSI and
DPRSLP
Logic
TRDET
Generator
Current
Monitor
Current
Monitor
BST1
DRVH1
Current
Limit
Circuit
OCP
Shutdown
Delay
SW1
PGND
DRVL1
PVCC
BST2
DRVH2
SW2
DRVL2
PVCC
PGND
Driver
Logic
Precision
Reference
Precision
Reference
Soft Start
VARFREQ
PH0
PH1
CLKEN
TRDET
CLKEN
CLKEN
OD3
PSI


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