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ADM1278-1AACPZ Datasheet(PDF) 4 Page - Analog Devices

Part # ADM1278-1AACPZ
Description  Hot Swap Controller and Digital Power and Energy Monitor with PMBus Interface
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM1278-1AACPZ Datasheet(HTML) 4 Page - Analog Devices

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ADM1278
Data Sheet
SPECIFICATIONS
VCC = 4.5 V to 20 V, VCC ≥ VHS+ and VMO+, VHS+ = 2 V to 20 V, VSENSE_HS = (VHS+ − VHS−) = 0 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2.
Parameter1
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Operating Voltage Range
VCC
4.5
20
V
Undervoltage Lockout
UVLO
2.4
2.7
V
VCC rising
Undervoltage Hysteresis
90
120
mV
Quiescent Current
ICC
5.5
mA
GATE on and power monitor running
UV PIN
Input Current
IUV
50
nA
UV ≤ 3.6 V
UV Threshold
UVTH
A Grade and AA Grade
0.99
1.0
1.01
V
UV falling
B Grade Only
0.97
1.0
1.03
V
UV falling
UV Threshold Hysteresis
UVHYST
45
60
75
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
Input Current
IOV
50
nA
OV ≤ 3.6 V
OV Threshold
OVTH
A Grade and AA Grade
0.99
1.0
1.01
V
OV rising
B Grade Only
0.97
1.0
1.03
V
OV rising
OV Threshold Hysteresis
OVHYST
45
60
75
mV
OV Glitch Filter
OVGF
1.5
3.5
μs
50 mV overdrive
OV Propagation Delay
OVPD
3.0
4.0
μs
OV high to GATE pull-down active
HS+ AND HS− PINS
Input Current
ISENSEx
150
μA
Per individual pin; VHS+, VHS− = 20 V
Input Imbalance
IΔSENSE
5
μA
IΔSENSE = (I+ − I)
MO+ AND MO− PINS
Input Current
IMO±
25
nA
Per individual pin; VMO+, VMO− = 20 V
VCAP PIN
Internally Regulated Voltage
VVCAP
A Grade and AA Grade
2.68
2.7
2.72
V
0 µA ≤ IVCAP ≤ 100 µA; CVCAP = 1 μF
B Grade Only
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
Recommended Maximum
Operating Range
VISET
0.25
1.25
V
5 mV to 25 mV VSENSE current limit
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 − VOUT
10
12
14
V
20 V ≥ VCC ≥ 8 V; IGATE ≤ 5 μA
8
10
V
VHS+ = VCC = 5 V; IGATE ≤ 5 μA
7
9
V
VHS+ = VCC = 4.5 V; IGATE ≤ 1 μA
GATE Pull-Up Current
IGATEUP
−20
−30
μA
VGATE = 0 V
GATE Pull-Down Current
IGATEDN
Regulation
IGATEDN_REG
45
60
75
μA
VGATE ≥ 2 V; VISET = 1.0 V; (VHS+ − VHS−) = 30 mV
Slow
IGATEDN_SLOW
5
10
15
mA
VGATE ≥ 2 V
Fast
IGATEDN_FAST
750
1500
2250
mA
VGATE ≥ 12 V; VCC ≥ 12 V
GATE Holdoff Resistance
20
VCC = 0 V, VGATE = 2 V
Rev. A | Page 4 of 61


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