Datasheet

Data Sheet ADM1075
Rev. B | Page 5 of 52
SPECIFICATIONS
VEE = −48 V, V
SENSE
= (V
SENSE+
− V
SENSE−
) = 0 mV, shunt regulation current = 10 mA, T
J
= −40°C to +105°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
SYSTEM SUPPLY
Voltage Transient Immunity −200 V
Typical Operating Voltage −80 −35 V Determined by external component, R
SHUNT
SHUNT REGULATOR
Operating Supply Voltage Range, VIN 11.5 12.3 13 V Shunt regulation voltage, I
IN
= 5.5 mA to 30 mA,
maximum I
IN
dependent on T
A
, θ
JA
(see the Powering the
ADM1075 section)
Quiescent Supply Current 5.5 mA VIN = 13 V
Undervoltage Lockout, V
UVLO_RISING
9.2 V
Undervoltage Lockout Hysteresis 600 mV
Power Directly Without Shunt
9.2
11.5
V
UV PINS—UNDERVOLTAGE DETECTION
Undervoltage Rising Threshold, V
UVH
0.99 1.0 1.01 V
Undervoltage Falling Threshold, V
UVL
0.887 0.9 0.913 V
Total Undervoltage Hysteresis 100 mV When UVL and UVH are tied together
Undervoltage Fault Filter 3.5 7.5 µs
UV Propagation Delay 5 8 µs UV low to GATE pull-down active
UVL/UVH Input Current 1 50 nA
OV PIN—OVERVOLTAGE DETECTION
Overvoltage Rising Threshold, V
OVR
0.99 1.0 1.01 V
Overvoltage Hysteresis Current 4.3 5 5.7 µA
Overvoltage Fault Filter 1.75 3.75 µs
OV Propagation Delay 2 4 µs OV high to GATE pull-down active
OV Input Current 1 50 nA
GATE PIN
Gate Voltage High 11 12 13 V I
GATE
= −1.0 µA
Gate Voltage Low 10 100 mV I
GATE
= 100 µA
Pull-Up Current −50 −30 µA V
GATE
= 0 V to 8 V; V
SS
= 2 V
Pull-Down Current (Regulation) 100 µA V
GATE
≥ 2 V
Pull-Down Current (UV/OV/OC) 5 10 mA V
GATE
≥ 2 V
Pull-Down Current (Severe OC) 750 1500 2000 mA V
GATE
≥ 6 V
Pull-Down On-Time (Severe OC) 8 16 µs
Gate Hold-Off Resistance
20
Ω
0 V ≤ VIN ≤ 9.2 V
SENSE+, SENSE−
SENSE+, SENSE− Input Current, I
SENSEx
100 μA V
SENSE
≤ 65 mV for ADM1075-1, per individual pin;
V
SENSE
≤ 130 mV for ADM1075-2, per individual pin
SENSE+, SENSE− Input Imbalance, I
ΔSENSEx
1 μA I
ΔSENSEx
= I
SENSE+
− I
SENSE−
VCAP
Internally Regulated Voltage, V
VCAP
2.66 2.7 2.74 V 0 ≤ I
VCAP
≤ 100 μA; C
VCAP
= 1 μF
ISET
ISET Reference Select Threshold, V
ISETRSTH
1.35 1.5 1.65 V If V
ISET
> V
ISETRSTH
an internal 1 V reference (V
CLREF
) is used
ISET Internal Reference, V
CLREF
1 V Accuracies included in total sense voltage accuracies
Gain of Current Sense Amplifier, AV
CSAMP
50/25 V/V Accuracies included in total sense voltage accuracies
ISET Input Current, I
ISET
100 nA V
ISET
≤ VCAP
ADM1075-1 ONLY (GAIN = 50)
Hot Swap Sense Voltage
Hot Swap Sense Voltage Current Limit,
V
SENSECL
19.4 20 20.6 mV V
ISET
> 1.65 V; V
GATE
= 3 V; I
GATE
= 0 μA; V
SS
≥ 2 V; V
PLIM
= 0 V
24.5 25 25.5 mV V
ISET
= 1.25 V; V
GATE
= 3 V; I
GATE
= 0 μA; V
SS
≥ 2 V; V
PLIM
= 0 V
19.5 20 20.5 mV V
ISET
= 1.0 V; V
GATE
= 3 V; I
GATE
= 0 μA; V
SS
≥ 2 V; V
PLIM
= 0 V
14.5
15
15.5
mV
V
ISET
= 0.75 V; V
GATE
= 3 V; I
GATE
= 0 μA; V
SS
≥ 2 V; V
PLIM
= 0 V