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ACS723LLCTR-20AB-T

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by Ray

Allegro MicroSystems LLC Current Sensors, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentmagnetic sensorsacs723llctr-20ab-t
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Datasheet

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Contents

README

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ACS723LLCTR-20AB-T

Allegro MicroSystems LLC · Current Sensors · SOIC-8

ACS723LLCTR-20AB-T from Allegro MicroSystems LLC, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IP+ passive Positive terminal of the internal primary copper current-sense conductor. Tied internally to pin 2. Sensed current I_P flows from IP+ (pins 1, 2) to IP− (pins 3, 4); rated for 65 A maximum continuous current at T_A = 25 °C.
2 IP+ passive Positive terminal of the internal primary copper current-sense conductor. Tied internally to pin 1. Both IP+ pins must be paralleled on the PCB to carry the primary sense current.
3 IP- passive Negative/return terminal of the internal primary copper current-sense conductor. Tied internally to pin 4. Together with pin 4 forms the low-side of the isolated primary path.
4 IP- passive Negative/return terminal of the internal primary copper current-sense conductor. Tied internally to pin 3.
5 GND power_in Signal-side ground reference for the device. All decoupling and VIOUT/BW_SEL loads are referenced to this pin.
6 BW_SEL input Bandwidth-select input. Leaving pin floating selects the 20 kHz low-noise output filter; tying to GND selects the 80 kHz high-bandwidth mode.
7 VIOUT output Analog output voltage proportional to the primary sensed current I_P. For the -20AB-T (bidirectional ±20 A) variant, sensitivity is 100 mV/A typ. at VCC = 5 V and the quiescent output is nominally VCC/2 at I_P = 0 A. Absolute maximum V_IOUT = 25 V; reverse output rating −0.1 V.
8 VCC power_in Device supply pin. Operating range 4.5 V to 5.5 V (single supply); absolute maximum 6 V, reverse supply −0.1 V. Bypass with a 0.1 µF capacitor (C_BYPASS) to GND close to the pin.

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems LLC
Package SOIC-8
Category Magnetic Sensors
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • ACS723LLCTR-05AB-T
  • ACS723LLCTR-10AB-T
  • ACS723LLCTR-20AB-T
  • ACS723LLCTR-40AB-T
  • ACS723LLCTR-50AB-T
  • ACS723LLCTR-10AU-T
  • ACS723LLCTR-20AU-T
  • ACS723LLCTR-40AU-T

CAD (KiCad official)

  • Symbol: ACS723LLCTR-20AB-T
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Allegro MicroSystems LLC datasheet (24 pp, sha256 e2fc184189eefa51, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF