ACS711KLCTR-25AB-T View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

ACS711KLCTR-25AB-T

Hall Effect Linear Current Sensor with Overcurrent Fault Output for <100 V Isolation Applications

Allegro MicroSystems 

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ACS711

Hall Effect Linear Current Sensor with Overcurrent

Fault Output for < 100 V Isolation Applications

COMMON OPERATING CHARACTERISTICS over full range of TA and VCC = 3.3 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min. Typ.

Max. Units

ELECTRICAL CHARACTERISTICS

Supply Voltage1

Supply Current

Output Capacitance Load

Output Resistive Load

Primary Conductor

Resistance

VIOUT Rise Time

Propagation Delay Time

Response Time

Internal Bandwidth2

Nonlinearity

Symmetry

VIOUT Saturation Voltages

Quiescent Output Voltage

Power-On Time

VCC

ICC

CLOAD

RLOAD

RIP

tr

tPROP

tRESPONSE

BWI

ELIN

ESYM

VCC = 3.3 V, output open

VIOUT to GND

VIOUT to GND

EX package, TA = 25°C

LC package, TA = 25°C

IP = IPMAX, TA = 25°C, COUT = open

IP = IP(max), TA = 25°C, COUT = open

IP = IP(max), TA = 25°C, COUT = open

–3 dB, TA = 25°C

Over full range of IP

Apply full scale IP

VIOH

VIOL

VIOUT(Q)

tPO

IP = 0 A, TA = 25°C

Output reaches 90% of steady-state level, TA = 25°C,

20 A present on primary conductor

3

3.3

5.5

V

–

4

5.5

mA

–

–

1

nF

15

–

–

kΩ

–

0.6

–

mΩ

–

1.2

–

mΩ

–

3.5

–

μs

–

1.2

–

μs

–

4.6

–

μs

–

100

–

kHz

–

±1

–

%

–

100

–

%

VCC–

0.3

–

–

V

–

–

0.3

V

–

VCC / 2

–

V

–

35

–

μs

¯F¯¯A¯U¯¯L¯¯T¯ Pin Characteristics

¯F¯¯A¯U¯¯L¯¯T¯ Operating Point

¯F¯¯A¯U¯¯L¯¯T¯ Output Pullup

Resistor

IFAULT

RPU

–

± 1 x IP

–

A

1

–

–

kΩ

¯F¯¯A¯U¯¯L¯¯T¯ Output Voltage

¯F¯¯A¯U¯¯L¯¯T¯ Response Time

VCC Off Voltage Level for

Fault Reset3

VOH

VOL

tFAULT

VCCFR

RPU = 1 kΩ

Measured from | IP | > | IFAULT | to VFAULT ≤ VOL

–

VCC–

0.3

–

V

–

0.3

–

V

–

1.3

–

μs

–

–

200

mV

VCC Off Duration for

Fault Reset3

tCCFR

100

–

–

μs

1Devices are programmed for maximum accuracy at 3.3 V VCC levels. The device contains ratiometry circuits that accurately alter the 0 A Output

Voltage and Sensitivity level of the device in proportion to the applied VCC level. However, as a result of minor nonlinearities in the ratiometry circuit

additional output error will result when VCC varies from the 3.3 V VCC level. Customers that plan to operate the device from a 5 V regulated supply

should contact their local Allegro sales representative regarding expected device accuracy levels under these bias conditions.

2Calculated using the formula BWI = 0.35 / tr.

3After the ¯F¯¯A¯U¯¯L¯¯T¯ pin is latched low, the only way to reset it is through a power-off and power-on cycle on the VCC pin. For fault reset, VCC must stay

below VCCFR for a period greater than tCCFR before settling to the normal operation voltage (3 to 5.5 V).

Allegro MicroSystems, LLC

4

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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