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NCP5318FTR2 Datasheet(PDF) 6 Page - ON Semiconductor

Part # NCP5318FTR2
Description  Two/Three/Four?뭁hase Buck CPU Controller
Download  31 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP5318FTR2 Datasheet(HTML) 6 Page - ON Semiconductor

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NCP5318
http://onsemi.com
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ELECTRICAL CHARACTERISTICS (0°C < TA < 70°C; VCC = 12 V; CGATEx = 100 pF, CCOMP = 0.01 mF,
CSS = 0.1 mF, CVCC = 0.1 mF, RROSC = 95.3 kW, V(ILIM) = 1.0 V, DAC Code 010100; unless otherwise noted)
Characteristic
Test Conditions
Min
Typ
Max
Unit
VID Inputs
Input Threshold
VID5, VID4, VID3, VID2, VID1, VID0
400
600
800
mV
VID Pin Current
VID5, VID4, VID3, VID2, VID1, VID0 = 0 V
0.2
1.0
mA
SGND Bias Current
SGND < 300 mV, All DAC Codes
10
20
40
mA
SGND Voltage Compliance Range
−200
300
mV
Power Good
Upper Threshold, Offset from No Load Set Point
85
97
115
mV
Lower Threshold Constant
PWRGDS/No Load Set Point
0.475
0.505
0.525
V/V
Output Low Voltage
VFFB = 1.0 V, IPWRGD = 4.0 mA
0.18
0.40
V
Delay
VFFB high to PWRGD high
1.0
2.0
4.0
ms
Overvoltage Protection
OVP Threshold above VID
170
215
250
mV
Enable Input
Start Threshold
Gates switching, SS high
0.8
V
Stop Threshold
Gates not switching, SS low
0.4
V
Hysteresis
100
170
mV
Input Pull−Up Voltage
1.0 MW to GND
2.7
2.9
3.3
V
Input Pull−Up Resistance
7.0
10
20
kW
Error Amplifier
VFB Bias Current
0.1
1.0
mA
COMP Source Current
COMP = 0.5 V to 2.0 V
40
70
100
mA
COMP Sink Current
40
70
100
mA
Transconductance
(Note 2)
1.1
1.3
1.5
mmho
Open Loop DC Gain
(Note 2)
72
80
dB
Unity Gain Bandwidth
CCOMP = 30 pF (Note 2)
4.0
MHz
PSRR @ 1.0 kHz
(Note 2)
60
dB
COMP Max Voltage
VFB = 0 V
2.4
2.9
V
COMP Min Voltage
VFB = 1.6 V
80
150
mV
PWM Comparators
Minimum Pulse Width
Measured from CSxP to GATEx,
VFB = CSxN = 0.5, COMP = 0.5 V,
60 mV step between CSxP and CSxN;
Measure at GATEx = 1.0 V (Note 2)
40
100
ns
Transient Response Time
Measured from CSxN to GATEx,
COMP = 2.1 V, CSxP = CSxN = 0.5 V,
CSxN stepped from 1.2 V to 2.0 V (Note 2)
40
60
ns
Channel Startup Offset
CSxP = CSxN = VFB = 0, Measure Vcomp
when GATEx switch high
0.35
0.62
0.75
V
Artificial Ramp Amplitude
50% duty cycle
175
mV
MOSFET Driver Enable (DRVON)
Output High
DRVON floating
2.3
V
Output Low
I = 100 mA
0.2
V
Pull−Down Resistance
DRVON = 1.5 V, ENABLE = 0 V,
R = 1.5 V/I(DRVON)
35
70
140
kW
Source Current
DRVON = 1.5 V
0.5
3.0
6.5
mA
2. Guaranteed by design, not tested in production.


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