ACS760ELFTR-20B-T View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

ACS760ELFTR-20B-T

12 V High-Side Hot-Swap Hall Effect Based Current Monitor IC

Allegro MicroSystems 

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ACS760ELF-20B 12 V High-Side Hot-Swap Hall Effect Based Current Monitor

OPERATING CHARACTERISTICS valid at VCC = 12 V, TA = 0°C to 85°C, unless otherwise noted

Characteristic

Symbol

Test Conditions

GENERAL ELECTRICAL CHARACTERISTICS

Linear Sensing Range

IP Current flows from IP+ to IP- pins

Primary Conductor Resistance

RPRIMARY TA = 25°C

Supply Voltage

VCC Voltage applied to IP+ pins

Supply Current

ICC

Undervoltage Lockout (UVLO)

VUVLOH VCC rising and CG pin current source turns on, EN pin = high

VUVLOL VCC falling and CG pin current source turns off, EN pin = high

UVLO Delay to Chip Enable/ Disable

tUVLOE Enabling, measured from rising VCC > VUVLOH to VGATE > 1 V

tUVLOD Disabling, from falling VCC < VUVLOL to VGATE < 1 V

FB+ to FB– Input Resistance

RFB TA = 25°C

CURRENT SENSE PERFORMANCE CHARACTERISTICS

VIOUT Analog Output Propagation

Time

tPROP

TA = 25°C, IP = 0 →20 A, capacitance from VIOUT to GND

= 100 pF

VIOUT Analog Output 10-90% Rise

Time

tr

TA = 25°C, IP = 0 →20 A, capacitance from VIOUT to GND

= 100 pF

VIOUT Analog Signal Bandwidth1

f3dB

–3 dB, Ip = 10 A peak-to-peak, TA = 25°C, no external device

filter, capacitance from VIOUT to GND = 100 pF

VIOUT Analog Signal Sensitivity

Sens

TA = 25°C

Over full ambient operating temperature range

TA = 25°C

Over full ambient operating temperature range

VIOUT Analog Noise Level

VIOUT Analog Nonlinearity

VNOISE(PP) Mean peak-to-peak, TA = 25°C, 50 kHz external device filter

ELIN

Over full ambient operating temperature range and linear

sensing range

Zero Current Output Voltage

VIOUT(Q)

TA = 0 to 55°C

TA = 0 to 85°C

Output Voltage Saturation Limits2

VOL TA = 25°C

VOH TA = 25°C

VIOUT Total Error % of IP

ETOT

TA = 25°C, IP = 20 A

TA = 0 to 85°C, IP = 20 A

VIOUT DC Output Resistance

RVIOUT IVIOUT = 1 mA

CURRENT FAULT PERFORMANCE CHARACTERISTICS

Load Power Fault Threshold

240 V*A Fault Signal Delay

PF(th)

tPFH

TA = 25°C, measured from FAULT signal to VGATE < 1 V,

2.2 μF capacitance from OPDLY pin to GND, load step from

17 A to 23 A in 100 ns

tPFL

TA = 25°C, measured from FAULT signal to VGATE < 1 V,

OPDLY pin open, load step from 17 A to 23 A in 100 ns

240 V*A Fault Signal Delay Drift

∆tPF

Over full operating ambient temperature range, external

capacitor with ±5% tolerance

Internal –3 dB Filter Frequency for FB+

and FB– Pins

fFBFILT TA = 25°C

IP Fault Switchpoint Tolerance3

IPF Fault Signal Delay4

EPF

tIPFLmax

tIPFH

Percentage error of IPF

Measured from FAULT signal to VGATE < 1 V, OCDLY pin

open, load step from 17 A to 45 A in 100 ns

Measured from FAULT signal to VGATE < 1 V, 2.2 nF capaci-

tance from OCDLY pin to GND, load step from 17 A to 45 A

in 100 ns

Min.

0

–

–

–

–

7.1

–

–

–

–

–

–

–

63

–

5.275

–

–

0.38

0.37

–

–

–

–

–

222

–

–

–15

–

–15

–

–

Typ.

–

1.5

12

10

–

–

500

–

240

2

5

50

65

–

5.416

–

20

±0.5

–

0.4

0.25

3.6

±1.0

–

1

230

425

10

–

50

–

8

425

Max.

55

–

13.2

12

10.5

–

900

2

–

–

–

–

–

67

–

5.558

–

±2.0

0.42

0.43

–

–

–

±3.5

–

238

–

12

15

–

15

12

–

Units

A

mΩ

V

mA

V

V

μs

μs

kΩ

μs

μs

kHz

mV/A

mV/A

mV/G

mV/G

mV

%

V

V

V

V

%

%

Ω

W

ms

μs

%

kHz

%

μs

μs

Continued on the next page…

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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