Product Overview
The Allegro ACS725 is an economical and precise automotive-grade current sensor IC designed for AC or DC current sensing in industrial, automotive, commercial, and communications systems. Its small, low-profile SOIC8 package makes it ideal for space-constrained applications, while also reducing costs through minimized board area. The device features differential Hall sensing to reject common-mode fields, enhancing accuracy in noisy environments. Key applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The ACS725 offers galvanic isolation, a low power loss due to its 1.2 m primary conductor resistance, and a high-bandwidth analog output for fast response times.
Product Attributes
- Brand: Allegro
- 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: 8-Pin SOIC (suffix LC)
- Material: Leadframe plated with 100% matte tin; internally Pb-free (except for flip-chip high-temperature Pb-based solder balls, exempt from RoHS)
- Origin: USA
Technical Specifications
| Model | Current Sensing Range (IPR) | Sensitivity (Typ. at VCC = 3.3 V) | Temperature Range (TA) | Packing |
|---|---|---|---|---|
| ACS725LLCTR-05AB-T | 5 A | 264 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-10AB-T | 10 A | 132 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-10AU-T | 0 10 A | 264 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-20AB-T | 20 A | 66 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-20AB-T-H | 20 A | 66 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-20AU-T | 0 20 A | 132 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-30AB-T | 30 A | 44 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-30AB-T-H | 30 A | 44 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-30AU-T | 0 30 A | 88 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-40AB-T | 40 A | 33 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| ACS725LLCTR-50AB-T | 50 A | 26.4 mV/A | 40 to 150 C | Tape and Reel, 3000 pieces per reel |
| Characteristic | Symbol | Test Conditions | Typical Value | Unit |
|---|---|---|---|---|
| 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 UL 60950-1 (edition 2) | 420 Vpk or 297 Vrms | V |
| 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 |
| Supply Voltage | VCC | 3.3 | V | |
| Supply Current | ICC | VCC = 3.3 V, output open | 10 | mA |
| Characteristic | Symbol | Min. | Typ. [1] | Max. | Unit | Notes |
|---|---|---|---|---|---|---|
| Total Output Error | ETOT | 0.9 | % | IP = IPR(max); TA = 25C to 150C | ||
| Sensitivity Error | Esens | 0.9 | % | IP = IPR(max); TA = 25C to 150C | ||
| Offset Voltage | VOE | 5 | mV | IP = 0 A; TA = 25C to 150C | ||
| Sensitivity Error Lifetime Drift | Esens_drift | 1 | % | |||
| Total Output Error Lifetime Drift | Etot_drift | 1 | % |
[1] Typical values with are 3 sigma values.
[2] Percentage of IP, with IP = IPR(max).
[3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
Package Dimensions (LC, 8-Pin SOICN):
Refer to the provided Package Outline Drawing for detailed dimensions in millimeters.
2410010100_ALLEGRO-ACS725LLCTR-30AB-T_C2688267.pdf
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