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ISL6322 Datasheet(PDF) 8 Page - Intersil Corporation

Part No. ISL6322
Description  Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL6322 Datasheet(HTML) 8 Page - Intersil Corporation

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8
FN6328.0
August 21, 2006
REFERENCE AND DAC
System Accuracy (1.000V - 1.600V)
-0.5
0.5
%
System Accuracy (0.600V - 1.000V)
-1.0
1.0
%
System Accuracy (0.375V - 0.600V)
-2.0
2.0
%
DAC Input Low Voltage (VR10, VR11)
0.4
V
DAC Input High Voltage (VR10, VR11)
0.8
V
DAC Input Low Voltage (AMD)
0.6
V
DAC Input High Voltage (AMD)
1.0
V
PIN-ADJUSTABLE OFFSET
OFS Sink Current Accuracy (Negative Offset)
ROFS = 10kΩ from OFS to GND
37.0
40.0
43.0
μA
OFS Source Current Accuracy (Positive Offset)
ROFS = 30kΩ from OFS to VCC
50.5
53.5
56.5
μA
ERROR AMPLIFIER
DC Gain
RL = 10k to ground, (Note 3)
96
dB
Gain-Bandwidth Product
CL = 100pF, RL = 10k to ground, (Note 3)
20
MHz
Slew Rate
CL = 100pF, Load = ±400μA, (Note 3)
8
V/
μs
Maximum Output Voltage
Load = 1mA
3.90
4.20
V
Minimum Output Voltage
Load = -1mA
1.30
1.5
V
SOFT-START RAMP
Soft-Start Ramp Rate
VR10/VR11, RS = 100kΩ
1.563
mV/µs
AMD
2.063
mV/µs
Adjustment Range of Soft-Start Ramp Rate (Note 3)
0.625
6.25
mV/µs
PWM OUTPUT
PWM Output Voltage LOW Threshold
Iload = ±500
μA0.5
V
PWM Output Voltage HIGH Threshold
Iload = ±500
μA4.5
V
CURRENT SENSING
Current Sense Resistance, RISEN
T = 25°C
297
300
303
Ω
Sensed Current Tolerance
ISEN1+ = ISEN2+ = ISEN3+ = ISEN4+ = 80
μA
768084
μA
OVERCURRENT PROTECTION
Overcurrent Trip Level - Average Channel
Normal operation
110
125
140
μA
Dynamic VID change
143
163
183
μA
Overcurrent Trip Level - Individual Channel
Normal operation
150
177
204
μA
Dynamic VID change (Note 3)
209.4
238
266.6
μA
PROTECTION
Undervoltage Threshold
VSEN falling
55
60
65
%VID
Undervoltage Hysteresis
VSEN rising
10
%VID
Overvoltage Threshold During Soft-Start
VR10/VR11
1.24
1.28
1.32
V
AMD
2.13
2.20
2.27
V
Overvoltage Threshold (Default)
VSEN rising
VDAC +
225mV
VDAC +
250mV
VDAC +
275mV
V
Overvoltage Threshold (Alternate)
VSEN rising
VDAC +
150mV
VDAC +
175mV
VDAC +
200mV
V
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6322
ISL6322


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