ACS770XCB datasheet(5/29 Pages) ALLEGRO

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Thermally Enhanced, Fully Integrated, Hall-Effect-Based

High-Precision Linear Current Sensor IC with 100 µΩ Current Conductor

ACS770xCB

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

COMMON OPERATING CHARACTERISTICS: Valid at TOP = –40°C to 150°C, CBYP = 0.1 µF, and VCC = 5 V,

unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Supply Voltage

VCC

4.5

5.0

5.5

Supply Current

ICC

Output open

–

Supply Zener Voltage

TA = 25°C, ICC = 30 mA

6.5

7.5

–

Power-On Delay [1][2]

tPOD

TA = 25°C, CBYP = open

–

µs

Temperature Compensation

Power-On Time [1]

tTC

TA = 25°C, CBYP = open

–

µs

Undervoltage Lockout (UVLO)

Threshold [1]

VUVLOH

TA = 25°C, VCC rising

–

3.8

–

VUVLOL

TA = 25°C, VCC falling

–

UVLO Enable/Disable Delay

Time [1][2]

tUVLOE

TA = 25°C, CBYP = open, VCC Fall Time (5 V to 3 V) = 1 μs

–

µs

tUVLOD

TA = 25°C, CBYP = Open,

VCC Recover Time (3 V to 5 V) = 1 μs

–

µs

Power-On Reset Voltage [1]

VPORH

TA = 25°C, VCC rising

–

2.9

–

VPORL

TA = 25°C, VCC falling

–

2.7

–

Rise Time [1][2]

IP step = 60% of IP+, 10% to 90% rise time, TA = 25°C,

CL = 0.47 nF

–

4.1

–

µs

Propagation Delay Time [1][2]

tPROP

IP step = 60% of IP+, 20% input to 20% output, TA = 25°C,

CL = 0.47 nF

–

2.4

–

µs

Response Time [1][2]

tRESPONSE

IP step = 60% of IP+, 80% input to 80% output, TA = 25°C,

COUT = 0.47 nF

–

4.6

–

µs

Internal Bandwidth

BWi

–3 dB; TA = 25°C, CL = 0.47 nF

–

120

–

kHz

Output Load Resistance

VIOUT to GND

4.7

–

kΩ

Output Load Capacitance

VIOUT to GND

–

Primary Conductor Resistance

RPRIMARY

TA = 25°C

–

100

–

µΩ

Quiescent Output Voltage [1]

VIOUT(QBI)

Bidirectional variant, IP = 0 A, TA = 25°C

–

VCC/2

–

VIOUT(QUNI)

Unidirectional variant, IP = 0 A, TA = 25°C

–

0.5

–

Ratiometry [1]

VRAT

VCC = 4.5 to 5.5 V

–

100

–

See Characteristic Definitions section of this datasheet.

See Timing Data Section of this datasheet.

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