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. The device features a precise, low-offset, linear Hall sensor circuit with a copper conduction path for sensing current, which generates a magnetic field converted into a proportional voltage. Differential sensing rejects common-mode fields for improved accuracy in noisy environments. The ACS724 is AEC-Q100 qualified and provides a high-bandwidth 120 kHz analog output for fast response times. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.
Product Attributes
- Brand: Allegro
- Product Line: ACS724
- Certifications: AEC-Q100 qualified, CB Certificate Number: US-32848-UL, TV America Certificate Number: U8V 18 02 54214 041, CB 14 11 54214 031
- Package Type: 8-Pin SOIC (LC suffix)
- Material: Leadframe plated with 100% matte tin. Internally Pb-free (except for flip-chip high-temperature Pb-based solder balls).
Technical Specifications
| Model / Characteristic | Value | Unit | Notes |
|---|---|---|---|
| General Specifications | |||
| Primary Conductor Resistance | 1.2 | m | Typical |
| Bandwidth | 120 | kHz | Analog output, -3 dB |
| Supply Voltage | 4.5 - 5.5 | V | VCC |
| Supply Current | 10 | mA | Typical at VCC = 5 V, output open |
| Operating Ambient Temperature Range | -40 to 150 | C | TA Range L |
| Junction Temperature (Max) | 165 | C | TJ(max) |
| Dielectric Surge Strength Test Voltage | 6000 | V | IEC 61000-4-5 compliant |
| Dielectric Strength Test Voltage | 2400 | VRMS | UL 60950-1 compliant |
| Clearance (IP to Signal Leads) | 4.2 | mm | Dcl |
| Creepage (IP to Signal Leads) | 4.2 | mm | Dcr |
| Model Specific Performance (Typical at VCC=5V, TA=25C unless noted) | |||
| Model | Current Sensing Range (IPR) | Sensitivity (Sens) | Zero-Current Output Voltage (VIOUT(Q)) |
| ACS724LLCTR-2P5AB-T | 2.5 A | 800 mV/A | VCC 0.5 V (Bidirectional) |
| ACS724LLCTR-05AB-T | 5 A | 400 mV/A | VCC 0.5 V (Bidirectional) |
| ACS724LLCTR-10AU-T | 0 - 10 A | 400 mV/A | VCC 0.1 V (Unidirectional) |
| ACS724LLCTR-10AB-T | 10 A | 200 mV/A | VCC 0.5 V (Bidirectional) |
| ACS724LLCTR-20AU-T | 0 - 20 A | 200 mV/A | VCC 0.1 V (Unidirectional) |
| ACS724LLCTR-20AB-T | 20 A | 100 mV/A | VCC 0.5 V (Bidirectional) |
| ACS724LLCTR-30AU-T | 0 - 30 A | 133 mV/A | VCC 0.1 V (Unidirectional) |
| ACS724LLCTR-30AB-T | 30 A | 66 mV/A | VCC 0.5 V (Bidirectional) |
| ACS724LLCTR-40AU-T | 0 - 40 A | 100 mV/A | VCC 0.1 V (Unidirectional) |
| ACS724LLCTR-50AB-T | 50 A | 40 mV/A | VCC 0.5 V (Bidirectional) |
2304140030_ALLEGRO-ACS724LLCTR-10AU-T_C2155518.pdf
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