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參數(shù)資料
| 型號： | NCP5318FTR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Two/Three/Four−Phase Buck CPU Controller |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封裝： | LEAD FREE, LQFP-32 |
| 文件頁數(shù)： | 7/31頁 |
| 文件大?。?/td> | 384K |
| 代理商： | NCP5318FTR2G |
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NCP5318
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS (continued)
(0
°
C < T
A
< 70
°
C; V
CC
= 12 V; C
GATEx
= 100 pF, C
COMP
= 0.01 F,
C
SS
= 0.1 F, C
VCC
= 0.1 F, R
ROSC
= 95.3 k , V(I
LIM
) = 1.0 V, DAC Code 010100; unless otherwise noted)
Characteristic
Unit
Max
Typ
Min
Test Conditions
GATES
High Voltage
Measure GATEx, I
GATEx
= 1.0 mA
Measure GATEx, I
GATEx
= 1.0 mA
0.8 V < GATEx < 2.0 V, V
CC
= 10 V
2.0 V > GATEx > 0.8 V, V
CC
= 10 V
2.25
V
Low Voltage
0.1
0.7
V
Rise Time GATE
5.0
10
ns
Fall Time GATE
5.0
10
ns
Oscillator
Switching Frequency
R
OSC
= 95.3 k, 3 Phase
R
OSC
= 95.3 k, 4 Phase
276
213
325
251
374
289
kHz
R
OSC
Voltage
Phase Delay, 3 Phases
0.95
1.02
1.05
V
V
CC
= CS4P = CS4N
100
120
140
deg
Phase Delay, 4 Phases
75
90
105
deg
Phase Disable Threshold
V
CC
(CS4P = CS4N)
500
mV
Adaptive Voltage Positioning
V
DRP
Output Voltage to DAC
OUT
Offset
CSxP = CSxN, V
FB
= COMP,
Measure V
DRP
COMP
CSxP
CSxN = 80 mV, V
FB
= COMP, Mea-
sure V
DRP
COMP for 25
C < T
A
< 70
°
C
20
0
+20
mV
Current Sense Amplifier to V
DRP
Gain
(each channel separately)
4.37
4.6
4.83
V/V
V
DRP
Source Current
V
DRP
Sink Current
Soft
Start
0.95
1.3
3.0
mA
0.2
0.4
0.6
mA
Charge Current
30
44
50
A
Discharge Current
90
120
160
A
COMP Pull
Down Current
0.2
0.9
2.1
mA
Current Sensing and Overcurrent Protection
CSxP Input Bias Current
CSxN = CSxP = 0 V
0.1
1.0
A
CSxN Input Bias Current
CSxN = CSxP = 0 V
0.1
1.0
A
Current Sense Amp to PWM Gain
CSxN = 0 V, CSxP = 80 mV, Measure
V(COMP) when GATEx switches high
3.4
4.6
5.8
V/V
Current Sense Amp to PWM Bandwidth
(Note 2)
7.0
MHz
Current Sense Amp to I
LIM
Gain
CSxP
CSxN = 20 mV to 60 mV, Ramp
I
LIM
until SS goes low
(Note 2)
3.228
3.390
3.526
V/V
Current Sense Amp to I
LIM
Bandwidth
Current Limit Filter Slew Rate
1.0
MHz
(Note 2)
2.0
5.0
13
mV/ s
I
LIM
Input Bias Current
Current Sense Amp to I
LIM
Output Offset
Current Sense Common Mode Input Range
I
LIM
= 0 V
0.1
1.0
A
T = 80
°
C
82
12
58
mV
(Note 2)
0
2.0
V
General Electrical Specifications
V
CC
Operating Current
UVLO Start Threshold
COMP = 0.3 V (no switching)
27
35
mA
SS charging, GATEx switching
8.5
9.0
9.5
V
UVLO Stop Threshold
GATEx not switching, SS and COMP
discharging
7.5
8.0
8.5
V
UVLO Hysteresis
Start
Stop
0.8
1.0
1.2
V
2. Guaranteed by design, not tested in production.
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