ACS760ELF-20BTR-T データシートの表示（PDF） - Allegro MicroSystems

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ACS760ELF-20BTR-T

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

Allegro MicroSystems 

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

Pin-out Diagram

IP+ 1

IP+ 2

IP+ 3

IP+ 4

IP+ 5

IP+ 6

EN 7

VIOUT 8

ISET 9

CG 10

OCDLY 11

OPDLY 12

24 IP–

23 IP–

22 IP–

21 IP–

20 IP–

19 IP–

18 GATE

17 GND

16 FB–

15 FB+

14 S1SHORT

13 FAULT

Terminal List Table

Number

1-6

7

8

9

10

11

12

13

14

15

16

17

18

19-24

Name

IP+

EN

VIOUT

ISET

CG

OCDLY

OPDLY

FAULT

S1SHORT

FB+

FB-

GND

GATE

IP–

Function

Primary sensed current conduction path input; power input pins: connected to VCC

Enable pin. Toggling this pin to the low state after a FAULT condition resets the ACS760.

Analog current sense output. Output voltage on this pin is proportional to the current flowing from the

IP+ pins to the IP– pins.

Terminal for RSET resistor. Sets Fault Current Threshold, IPF, via external resistor, RSET, connected

between this terminal and GND. Factory trimmed 100 μA current source flows out of this pin.

Terminal for CG capacitor. May be used to adjust the turn-on time and soft start control of an external

MOSFET, S1. Voltage on this pin limits inrush current through MOSFET S1. Set via external

capacitance, CG, connected between this pin and GND. This capacitor is charged by an internal 20 μA

current source.

Terminal for external capacitor, COCD, Used to adjust delay for overcurrent shutdown, set via the

external capactior, COCD, connected between this pin and GND.

Terminal for external capacitor, COPD, Used to adjust delay for overpower shutdown, set via the

external capactior, COPD, connected between this pin and GND.

Active low; output signal for short circuit and 240 V*A overload faults; does not trip for S1 short circuit

fault.

Active low; output signal for MOSFET S1 failure.

Input of positive feedback on output voltage. Used to determine 240 V*A threshold by difference

between FB+ and FB– pins.

Input of negative feedback on output voltage. Used to determine 240 V*A threshold by difference

between FB+ and FB– pins. Pulling the FB– pin to 3.3 V, and the OPDLY pin to GND, disables the

240 V*A power fault, which allows the ACS760 to operate purely in Current Mode.

Terminal for ground connection.

Terminal for external MOSFET, S1. Provides output voltage to drive S1. Current through S1 is

controlled at start-up by external capacitance connected between the CG pin and GND.

Primary sensed current conduction path output; power output pins.

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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