ACS720KLATR-35AB-T datasheet(8/35 Pages) ALLEGRO

Part #	ACS720KLATR-35AB-T

Description	High Accuracy, Dual Fault, Galvanically Isolated Current Sensor in SOIC16 Wide-Body Package

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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8 / 35 page

High Accuracy, Dual Fault, Galvanically Isolated

Current Sensor in SOIC16 Wide-Body Package

ACS720

8

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

x15AB-4 PERFORMANCE CHARACTERISTICS

: Valid at TA = – 40°C to 125°C, VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ. [1]

Max.

Unit

NOMINAL PERFORMANCE

Optimized Accuracy Range

IPR

–15

–

15

A

Sensitivity

Sens

–

90

–

mV/A

Zero-Current Output Voltage

VIOUT(Q)

IP = 0 A

–

1.5

–

V

Fast Fault Trip Level

IFF(HIGH)

VOC_F = 0.7 × VCC

–

33.8

–

A

IFF(LOW)

VOC_F = 0.54 × VCC

–

26.3

–

A

Slow Fault Trip Level

ISF(HIGH)

VOC_S = 0.7 × VCC

–

18.8

–

A

ISF(LOW)

VOC_S = 0.3 × VCC

–

7.5

–

A

TOTAL OUTPUT ERROR COMPONENTS [2] ETOT(IP) = {[VIOUT_ideal(IP) – VIOUT(IP)] / [Sensideal(IP) × IP]} × 100 (%)

Total Output Error[3]

ETOT

IP = IPR(max), TA = 25°C to 125°C

–1.5

±0.8

1.5

%

IP = IPR(max), TA = –40°C to 25°C

–4

±1.6

4

%

Sensitivity Error

ESENS

IP = IPR(max), TA = 25°C to 125°C

–1.5

±0.6

1.5

%

IP = IPR(max), TA = –40°C to 25°C

–4

±1.6

4

%

Offset Voltage

VOE

IP = 0 A, TA = 25°C to 125°C

–10

±4

10

mV

IP = 0 A, TA = –40°C to 25°C

–30

±9

30

mV

OVERCURRENT FAULT PERFORMANCE

Fast Fault Error

EFF(HIGH)+

VOC_F = 0.7 × VCC, Positive IP, TA = 25°C

–10

±5

10

%

VOC_F = 0.7 × VCC, Positive IP, TA = 25°C to 125°C

–15

±5

15

%

VOC_F = 0.7 × VCC, Positive IP, TA = –40°C to 25°C

–

±25

–

%

EFF(HIGH)–

VOC_F = 0.7 × VCC, Negative IP, TA = 25°C

–12

±6

12

%

VOC_F = 0.7 × VCC, Negative IP, TA = 25°C to 125°C

–30

±20

30

%

VOC_F = 0.7 × VCC, Negative IP, TA = –40°C to 25°C

–

±35

–

%

EFF(LOW)+

VOC_F = 0.54 × VCC, Positive IP, TA = 25°C

–10

±7

10

%

VOC_F = 0.54 × VCC, Positive IP, TA = 25°C to 125°C

–15

±10

15

%

VOC_F = 0.54 × VCC, Positive IP, TA = –40°C to 25°C

–

±25

–

%

EFF(LOW)-

VOC_F = 0.54 × VCC, Negative IP, TA = 25°C

–15

±7

15

%

VOC_F = 0.54 × VCC, Negative IP, TA = 25°C to 125°C

–40

±25

40

%

VOC_F = 0.54 × VCC, Negative IP, TA = –40°C to 25°C

–

±45

–

%

Slow Fault Error

ESF(HIGH)

VOC_S = 0.7 × VCC, IP rising

–6

±3

6

%

ESF(LOW)

VOC_S = 0.3 × VCC, IP rising

–12

±5

12

%

Fast Fault Delay Code

–

4

–

Fast Fault Mask Time

tm(ff)

–

1.5

–

µs

Slow Fault Delay Code

–

4

–

FAULT CHARACTERISTICS

Fast Fault Response Time

tR(FF)

Time from IP rising above IFF until

VFAULT_F < VFAULTL for a current step from 0 to

1.2 × IFAULT(FAST); RPU = 10 kΩ,

100 pF from FAULT_F to ground

–

3.5

–

μs

Slow Fault Response Time

tR(SF)

Time from IP rising above ISF until

VFAULT_S < VFAULTL for a current step from 0 to

1.2 × IFAULT(SLOW); RPU = 10 kΩ, 100 pF from FAULT_S to ground

–

13

–

μs

[1]

Typical values with +/- are 3 sigma values.

[2]

A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output

error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares.

[3]

Percentage of IP, with IP = IPR(max).

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