ADM1276-3ACPZ-RL(Rev0) Ver la hoja de datos (PDF) - Analog Devices

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ADM1276-3ACPZ-RL
(Rev.:Rev0)

Hot Swap Controller and Digital Power and Energy Monitoring with PMBus Interface

Analog Devices 

ADM1276

Parameter

Foldback Active

Symbol

Min Typ

3.5 4

9.6 10

Circuit Breaker Offset

SEVERE OVERCURRENT

Voltage Threshold

VCBOS

VSENSEOC

Short Glitch Filter Duration

0.6 0.88

40

9.5

90

Long Glitch Filter Duration

(Default)

Response Time

With Short Glitch Filter

With Long Glitch Filter

SOFT START (SS PIN)

SS Pull-Up Current

ISS

Default VSENSECL Limit

530

180

645

−12 −10

0.5 1.25

SS Pull-Down Current

TIMER PIN

Timer Pull-Up Current

Power-On Reset(POR)

Overcurrent (OC) Fault

Timer Pull-Down Current

Retry

Hold

Timer Retry/OC Fault

Current Ratio

Timer High Threshold

Timer Low Threshold

FOLDBACK (FLB PIN)

FLB and PWRGD Threshold

Input Current

100

ITIMERUP

ITIMERUPPOR

ITIMERUPFLT

−2 −3

−57 −60

ITIMERDNRT

1.7

ITIMERDNHOLD

2

100

3.33

VTIMERH

VTIMERL

0.98 1.0

0.18 0.2

VFLBTH

IFLB

1.08 1.1

Hysteresis Current

1.7

Internal Hysteresis Voltage

1.9

Power-Good Glitch Filter PWRGDGF 0.3 0.7

Minimum Foldback Clamp

200

VOUT PIN

Input Current

LATCH PIN

Output Low Voltage

VOL_LATCH

Leakage Current

ENABLE PIN

Leakage Current

Input High Voltage

Input Low Voltage

VIH

1.1

VIL

Max

4.5

10.4

1.12

Unit

mV

mV

mV

Test Conditions/Comments

VFLB = 0 V; VGATE = (SENSE+) + 3 V; IGATE = 0 μA; VSS ≥ 1 V

VISET > 1.0 V; VFLB = 0.5 V; VGATE = (SENSE+) + 3 V; IGATE = 0 μA;

VSS ≥ 1 V

Circuit breaker trip voltage, VCB = VSENSECL − VCBOS

50

mV VISET = 1.0 V; VFLB > 1.1 V; VSS ≥ 2 V

13.0 mV VISET = 0.25 V; VFLB > 1.1 V; VSS ≥ 2 V

200 ns VISET > 1.65 V; VSENSE driven from 18 mV to 52 mV; selectable via

PMBus

900 ns VSENSE driven from 18 mV to 52 mV

370 ns

1020 ns

2 mV overdrive maximum severe overcurrent threshold

−8

μA VSS = 0 V

1.8 mV When VSENSE reaches this level, ISS is enabled, ramping VSENSECL;

VSS = 0 V

μA VSS = 1 V

−4

μA Initial power-on reset; VTIMER = 0.5 V

−63 μA Overcurrent fault; 0.2 V ≤ VTIMER ≤ 1 V

2.3 μA After fault when GATE is off; VTIMER = 0.5 V

μA Holds TIMER at 0 V when inactive; VTIMER = 0.5 V

3.8 % Defines the limits of the autoretry duty cycle

1.02 V

0.22 V

1.12 V

FLB rising; VISET = 1.0 V

100 nA VFLB ≤ 1.0 V; VISET = 1.25 V

100 nA VVCAP ≤ VFLB ≤ 20 V

2.3 μA

3.1 mV Voltage drop across the internal 1.3 kΩ resistor

1

μs 50 mV overdrive

mV Accuracies included in total sense voltage accuracies

20 μA VOUT = 20 V

0.4 V

ILATCH = 1 mA

1.5 V

ILATCH = 5 mA

100 nA VLATCH ≤ 2 V; LATCH output high-Z

1

μA VLATCH = 20 V; LATCH output high-Z

No internal pull-up present on this pin

100 nA VGPO2 ≤ 2 V

1

μA VGPO2 = 20 V

V

0.8 V

Rev. 0 | Page 5 of 48

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