Product Overview
The Allegro ACS724 current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, automotive, commercial, and communications systems. Its small package is ideal for space-constrained applications, offering cost savings through reduced board area. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device features a precise, low-offset, linear Hall sensor circuit with a low-resistance copper conduction path for efficient current sensing. Differential Hall sensing rejects common-mode fields for improved accuracy in noisy environments. The device is AEC-Q100 qualified and provides a high-bandwidth analog output for fast response times.
Product Attributes
- Brand: Allegro
- Qualification: AEC-Q100
- Package: 8-Pin SOIC (suffix LC)
- Certifications: CB Certificate Number: US-32848-UL, TV America Certificate Number: U8V 18 02 54214 041 CB 14 11 54214 031
- Leadframe Plating: 100% matte tin
- Device Material: Pb-free (except for flip-chip high-temperature Pb-based solder balls)
Technical Specifications
| Model | IPR (A) | Sens (Typ) at VCC = 5 V (mV/A) | TA (C) | Packing |
|---|---|---|---|---|
| ACS724LLCTR-2P5AB-T | 2.5 | 800 | 40 to 150 | Tape and Reel, 3000 pieces per reel |
| ACS724LLCTR-05AB-T | 5 | 400 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-10AU-T | 10 | 400 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-10AB-T | 10 | 200 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-20AU-T | 20 | 200 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-20AB-T | 20 | 100 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-30AU-T | 30 | 133 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-30AB-T | 30 | 66 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-40AU-T | 40 | 100 | 40 to 150 | Tape and Reel |
| ACS724LLCTR-50AB-T | 50 | 40 | 40 to 150 | Tape and Reel |
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5 | 5.5 | V | |
| Supply Current | ICC | VCC = 5 V, output open | 10 | 14 | mA | |
| Primary Conductor Resistance | RIP | TA = 25C | 1.2 | m | ||
| Bandwidth | BW | Small signal 3 dB; CL = 1 nF | 120 | kHz | ||
| Dielectric Surge Strength Test Voltage | VSURGE | Tested 5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 s (rise) / 50 s (width). | 6000 | V | ||
| Dielectric Strength Test Voltage | VISO | Agency type-tested for 60 seconds per UL standard 60950-1 (edition 2); production-tested at VISO for 1 second, in accordance with UL 60950-1 (edition 2). | 2400 | VRMS | ||
| Working Voltage for Basic Isolation | VWVBI | Maximum approved working voltage for basic (single) isolation according to UL 60950-1 (edition 2) | 420 Vpk or VDC | |||
| Clearance | Dcl | Minimum distance through air from IP leads to signal leads. | 4.2 | mm | ||
| Creepage | Dcr | Minimum distance along package body from IP leads to signal leads. | 4.2 | mm | ||
| Maximum Continuous Current | ICMAX | TA = 25C | 55 | A | ||
| Operating Ambient Temperature | TA Range | 40 | 150 | C | ||
| Junction Temperature (max) | TJ(max) | 165 | C | |||
| Storage Temperature | Tstg | 65 | 165 | C | ||
| Package Thermal Resistance (Junction to Ambient) | RJA | Mounted on the Allegro 85-0740 evaluation board with 1500 mm2 of 4 oz. copper on each side, connected to pins 1 and 2, and to pins 3 and 4, with thermal vias connecting the layers. Performance values include the power consumed by the PCB. | 23 | C/W | ||
| Package Thermal Resistance (Junction to Lead) | RJL | Mounted on the Allegro ASEK724 evaluation board. | 5 | C/W |
2202032030_ALLEGRO-ACS724LLCTR-05AU-T_C2155520.pdf
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