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IR3522 Datasheet(PDF) 7 Page - International Rectifier

Part # IR3522
Description  XPHASE3TM DDR & VTT CONTROL IC
PDF  32 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3522 Datasheet(HTML) 7 Page - International Rectifier

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IR3522
Page 7
V3.01
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
Over Voltage Protection (OVP) Comparators
VOUT1 Threshold Voltage
Compare to V(VREF1)
230
260
300
mV
VOUT2 Threshold Voltage
Compare to V(VREF1)
-20
0
20
mV
CROWBAR
VOUT1 Propagation Delay to
CROWBAR
Measure time from V(VOUT1) >
V(VREF1) (500 mV overdrive) to
V(CROWBAR) transition to > 2 V with
1nF.
40
100
ns
VOUT2 Propagation Delay to
CROWBAR
Measure time from V(VOUT2) >
V(VREF1) (250 mV overdrive) to
V(CROWBAR) transition to > 2 V with
1nF.
40
100
ns
CROWBAR Pull-up Resistance,
Active
To VCCL
5
15
CROWBAR Passive Pull Down
Resistance
12
25
65
k
CROWBAR Active Pull Down
Resistance to LGND
20
60
Track Fault Comparator
Threshold Voltage
Compare VOUT1 to VOUT2
0.99
1.06
1.13
V
Propagation Delay to CROWBAR
Measure time from V(VOUT1) >
V(VOUT1) (1.2V overdrive) to
V(CROWBAR) transition to > 0.9 *
V(VCCL).
90
180
ns
Open Sense Line Detection
Sense Line Detection Active
Comparator Threshold Voltage
150
200
250
mV
Sense Line Detection Active
Comparator Offset Voltage
V(VOUTx) < [V(VOSENx+) – V(LGND)] /
2
35
62.5
90
mV
VOSEN+ Open Sense Line
Comparator Threshold
Compare to V(VCCL)
86.5
89.0
91.5
%
VOSEN- Open Sense Line
Comparator Threshold
0.36
0.40
0.44
V
Sense Line Detection Source
Currents
V(VOUTx) = 100mV
200
500
700
uA
VIDx
VID0 & VID1 Input Thresholds
1.38
1.65
1.94
V
Internal Pull-up
Pull-up to 3.3 V typical
50
100
250
k
Float Voltage
3.1
3.3
3.5
V
ENABLE
Threshold Increasing
1.38
1.65
1.94
V
Threshold Decreasing
0.8
0.99
1.2
V
Threshold Hysteresis
470
620
770
mV
Bias Current
0V ≤ V(x) ≤ 3.5V
-5
0
5
uA
Blanking Time
Noise Pulse < 100ns will not register an
ENABLE state change. Note 1
75
250
400
ns
Over-Current Comparators
Input Offset Voltage
1V ≤ V(OCSETx) ≤ 3.3V
-35
0
35
mV
OCSET Bias Current
-5%
Vrosc(V)*1000/
Rosc(K )
+5
%
µA
2048-4096 Count Threshold
ROSC value, Note 1
11.3
16
23.1
k
1024-2048 Count Threshold
ROSC value, Note 1
14.4
20
29.1
k



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