ADM1075 datasheet(5/52 Pages) AD

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Data Sheet

ADM1075

Rev. A | Page 5 of 52

SPECIFICATIONS

VEE = −48 V, VSENSE = (VSENSE+ − VSENSE−) = 0 mV, shunt regulation current = 10 mA, TJ = −40°C to +105°C, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

SYSTEM SUPPLY

Voltage Transient Immunity

−200

Typical Operating Voltage

−80

−35

Determined by external component, RSHUNT

SHUNT REGULATOR

Operating Supply Voltage Range, VIN

11.5

12.3

Shunt regulation voltage, IIN = 5.5 mA to 30 mA,

maximum IIN dependent on TA, θJA (see the Powering the

ADM1075 section)

Quiescent Supply Current

5.5

VIN = 13 V

Undervoltage Lockout, VUVLO_RISING

9.2

Undervoltage Lockout Hysteresis

600

Power Directly Without Shunt

9.2

11.5

UV PINS—UNDERVOLTAGE DETECTION

Undervoltage Rising Threshold, VUVH

0.99

1.0

1.01

Undervoltage Falling Threshold, VUVL

0.887

0.9

0.913

Total Undervoltage Hysteresis

100

When UVL and UVH are tied together

Undervoltage Fault Filter

3.5

7.5

μs

UV Propagation Delay

μs

UV low to GATE pull-down active

UVL/UVH Input Current

OV PIN—OVERVOLTAGE DETECTION

Overvoltage Rising Threshold, VOVR

0.99

1.0

1.01

Overvoltage Hysteresis Current

4.3

5.7

μA

Overvoltage Fault Filter

1.75

3.75

μs

OV Propagation Delay

μs

OV high to GATE pull-down active

OV Input Current

GATE PIN

Gate Voltage High

IGATE = −1.0 μA

Gate Voltage Low

100

IGATE = 100 μA

Pull-Up Current

−50

−30

μA

VGATE = 0 V to 8 V; VSS = 2 V

Pull-Down Current (Regulation)

100

μA

VGATE ≥ 2 V

Pull-Down Current (UV/OV/OC)

VGATE ≥ 2 V

Pull-Down Current (Severe OC)

750

1500

2000

VGATE ≥ 6 V

Pull-Down On-Time (Severe OC)

μs

Gate Hold-Off Resistance

0 V ≤ VIN ≤ 9.2 V

SENSE+, SENSE−

SENSE+, SENSE− Input Current, ISENSEx

100

μA

VSENSE ≤ 65 mV for ADM1075-1, per individual pin;

VSENSE ≤ 130 mV for ADM1075-2, per individual pin

SENSE+, SENSE− Input Imbalance, IΔSENSEx

μA

IΔSENSEx = ISENSE+ − ISENSE−

VCAP

Internally Regulated Voltage, VVCAP

2.66

2.7

2.74

0 ≤ IVCAP ≤ 100 μA; CVCAP = 1 μF

ISET

ISET Reference Select Threshold, VISETRSTH

1.35

1.5

1.65

If VISET > VISETRSTH an internal 1 V reference (VCLREF) is used

ISET Internal Reference, VCLREF

Accuracies included in total sense voltage accuracies

Gain of Current Sense Amplifier, AVCSAMP

50/25

V/V

Accuracies included in total sense voltage accuracies

ISET Input Current, IISET

100

VISET ≤ VCAP

ADM1075-1 ONLY (GAIN = 50)

Hot Swap Sense Voltage

Hot Swap Sense Voltage Current Limit,

VSENSECL

19.4

20.6

VISET > 1.65 V; VGATE = 3 V; IGATE = 0 μA; VSS ≥ 2 V; VPLIM = 0 V

24.5

25.5

VISET = 1.25 V; VGATE = 3 V; IGATE = 0 μA; VSS ≥ 2 V; VPLIM = 0 V

19.5

20.5

VISET = 1.0 V; VGATE = 3 V; IGATE = 0 μA; VSS ≥ 2 V; VPLIM = 0 V

14.5

15.5

VISET = 0.75 V; VGATE = 3 V; IGATE = 0 μA; VSS ≥ 2 V; VPLIM = 0 V

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