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ADM1275-1ACPZ Scheda tecnica(PDF) 4 Page - Analog Devices

Il numero della parte ADM1275-1ACPZ
Spiegazioni elettronici  Hot-Swap Controller and Digital Power
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM1275-1ACPZ Scheda tecnica(HTML) 4 Page - Analog Devices

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ADM1275
Data Sheet
Rev. D | Page 4 of 48
SPECIFICATIONS
VCC = 2.95 V to 20 V, VCC ≥ VSENSE+, VSENSE+ = 2 V to 20 V, VSENSE = (VSENSE+ − VSENSE−) = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Operating Voltage Range, VCC
2.95
20
V
Undervoltage Lockout
2.4
2.7
V
VCC rising
Undervoltage Hysteresis
90
120
mV
Quiescent Current, ICC
5
mA
GATE on and power monitor running
UV PIN
Input Current, IUV
100
nA
UV ≤ 3.6 V
UV Threshold, UVTH
0.97
1.0
1.03
V
UV falling
UV Threshold Hysteresis, UVHYST
40
50
60
mV
UV Glitch Filter, UVGF
2
7
μs
50 mV overdrive
UV Propagation Delay, UVPD
5
8
μs
UV low to GATE pull-down active
OV PIN
ADM1275-1 and ADM1275-3
Input Current, IOV
100
nA
OV ≤ 3.6 V
OV Threshold, OVTH
0.97
1.0
1.03
V
OV rising
OV Threshold Hysteresis, OVHYST
50
60
70
mV
OV Glitch Filter, OVGF
0.5
1.5
μs
50 mV overdrive
OV Propagation Delay, OVPD
1.0
2
μs
OV high to GATE pull-down active
SENSE+ AND SENSE− PINS
Input Current, ISENSEx
150
μA
Per individual pin; SENSE+, SENSE− = 20 V
Input Imbalance, IΔSENSE
5
μA
IΔSENSE = (ISENSE+) − (ISENSE−)
VCAP PIN
Internally Regulated Voltage, VVCAP
2.66
2.7
2.74
V
0 µA ≤ IVCAP ≤ 100 µA; CVCAP = 1 μF
ISET PIN
Reference Select Threshold, VISETRSTH
1.35
1.5
1.65
V
If VISET > VISETRSTH, an internal 1 V reference (VCLREF) is used
Internal Reference, VCLREF
1
V
Accuracies included in total sense voltage accuracies
Gain of Current Sense Amplifier, AVCSAMP
50
V/V
Accuracies included in total sense voltage accuracies
Input Current, IISET
100
nA
VISET ≤ VVCAP
GATE PIN
Maximum voltage on the gate is always clamped to ≤31 V
Gate Drive Voltage, ΔVGATE
ΔVGATE = VGATE − VSENSE+
10
12
14
V
15 V ≥ VCC ≥ 8 V; IGATE ≤ 5 μA
4.5
13
V
20 V ≥ VCC ≥ 15 V; IGATE ≤ 5 μA
8
10
V
VSENSE+ = VCC = 5 V; IGATE ≤ 5 μA
4.5
6
V
VSENSE+ = VCC = 2.95 V; IGATE ≤ 1 μA
Gate Pull-Up Current, IGATEUP
−20
−30
μA
VGATE = 0 V
Gate Pull-Down Current, IGATEDN_REG
45
60
75
μA
VGATE ≥ 2 V; VISET = 1.0 V; (SENSE+) − (SENSE−) = 30 mV
Gate Pull-Down Current, IGATEDN_SLOW
5
10
15
mA
VGATE ≥ 2 V
Gate Pull-Down Current, IGATEDN_FAST
750
1500
2000
mA
VGATE ≥ 12 V; VCC ≥ 12 V
Gate Holdoff Resistance
20
VCC = 0 V
HOT-SWAP SENSE VOLTAGE
Hot-Swap Sense Voltage Current Limit,
VSENSECL
19.6
20
20.4
mV
VISET > 1.65 V; VFLB > 1.12 V; VGATE = (SENSE+) + 3 V;
IGATE = 0 μA; VSS ≥ 2 V
Foldback Inactive
VGATE = (SENSE+) + 3 V; IGATE = 0 μA; VSS ≥ 2 V
24.6
25
25.4
mV
VISET = 1.25 V; VFLB > 1.395 V
19.6
20
20.4
mV
VISET = 1.0 V; VFLB > 1.12 V
9.6
10
10.4
mV
VISET = 0.5 V; VFLB > 0.57 V
4.6
5
5.4
mV
VISET = 0.25 V; VFLB > 0.295 V
Foldback Active
3.5
4
4.5
mV
VFLB = 0 V; VGATE = (SENSE+) + 3 V; IGATE = 0 μA; VSS ≥ 1 V
9.6
10
10.4
mV
VISET > 1.0 V; VFLB = 0.5 V; VGATE = (SENSE+) + 3 V; IGATE = 0 μA;
VSS ≥ 1 V


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