ACS709LLF Просмотр технического описания (PDF) - Allegro MicroSystems

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ACS709LLF

High Bandwidth, Fast Fault Response Current Sensor IC In Thermally Enhanced Package

Allegro MicroSystems 

ACS709

High Bandwidth, Fast Fault Response Current Sensor IC

In Thermally Enhanced Package

COMMON OPERATING CHARACTERISTICS Valid at TA = –40°C to 150°C, VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ.

ELECTRICAL CHARACTERISTICS

Supply Voltage1

Nominal Supply Voltage

VCC

VCCN

3

–

–

5

Supply Current

Output Capacitance Load

Output Resistive Load

Magnetic Coupling from Device Conductor

to Hall Element

ICC

CLOAD

RLOAD

MCHALL

VIOUT open, ¯F¯¯A¯U¯¯L¯¯T¯ pin high

VIOUT pin to GND

VIOUT pin to GND

Current flowing from IP+ to IP– pins

–

11

–

–

10

–

–

9.5

Internal Filter Resistance2

RF(INT)

Primary Conductor Resistance

RPRIMARY

ANALOG OUTPUT SIGNAL CHARACTERISTICS

TA = 25°C

–

1.7

–

1.1

Full Range Linearity3

ELIN

Symmetry4

ESYM

Bidirectional Quiescent Output

VOUT(QBI)

TIMING PERFORMANCE CHARACTERISTICS

IP = ±IP0A

IP = ±IP0A

IP = 0 A, TA = 25°C

–0.75

99.1

–

±0.25

100

VCC×0.5

VIOUT Signal Rise Time

TA = 25°C, Swing IP from 0 A to IP0A,

tr

no capacitor on FILTER pin, 100 pF from

–

3

VIOUT to GND

VIOUT Signal Propagation Time

tPROP

TA = 25°C, no capacitor on FILTER pin,

100 pF from VIOUT to GND

–

1

VIOUT Signal Response Time

TA = 25°C, Swing IP from 0 A to IP0A,

tRESPONSE no capacitor on FILTER pin, 100 pF from

–

4

VIOUT to GND

VIOUT Large Signal Bandwidth5

f3dB

–3 dB, TA = 25°C, no capacitor on FILTER

pin, 100 pF from VIOUT to GND

–

120

Power-On Time

OVERCURRENT CHARACTERISTICS

tPO

Output reaches 90% of steady-state level,

no capacitor on FILTER pin, TA = 25°C

–

35

Setting Voltage for Overcurrent Switchpoint6

Signal Noise at Overcurrent

Comparator Input

VOC

INCOMP

VCC×0.25

–

–

±1

Overcurrent Fault Switchpoint Error7,8

EOC

Switchpoint in VOC safe operating area;

assumes INCOMP = 0 A

–

±5

Overcurrent ¯F¯¯A¯U¯¯L¯¯T¯ Pin Output Voltage

V ¯F¯ ¯A¯U¯¯L¯ ¯T¯

1 mA sink current at ¯F¯¯A¯U¯¯L¯¯T¯ pin

–

–

Fault Enable (FAULT_EN Pin) Input Low

Voltage Threshold

VIL

–

–

Fault Enable (FAULT_EN Pin) Input High

Voltage Threshold

VIH

0.8 × VCC

–

Fault Enable (FAULT_EN Pin) Input

Resistance

RFEI

–

1

Max. Units

5.5

V

–

V

14.5 mA

10

nF

–

kΩ

–

G/A

–

kΩ

–

mΩ

0.75

%

100.9 %

–

V

–

μs

–

μs

–

μs

–

kHz

–

μs

VCC×0.4 V

–

A

–

%

0.4

V

0.1 × VCC V

–

V

–

MΩ

Continued on the next page…

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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