High Accuracy Current Sensor ALLEGRO ACS37002KMABTR-050B5 with Trimmed Precision and Fast Fault Output
Product Overview
The ACS37002 is a fully integrated Hall-effect current sensor designed for high accuracy and robust performance in a compact SOICW-16 package. It offers factory-trimmed precision without the need for customer programming, sensing current differentially to reject common-mode magnetic fields. Available in two packages, MA and LA, it provides options optimized for high isolation (MA) or low noise (LA). Key features include a 400 kHz bandwidth, adjustable gain settings via logic pins, and a fast, pin-adjustable overcurrent fault output for system protection. The device is suitable for applications requiring precise current monitoring in fast control loops or high-speed current sensing scenarios.
Product Attributes
- Brand: Allegro MicroSystems
- Package Type: 16-Pin SOICW
- Certifications: UL60950-1 (ed. 2) and UL 62368 (ed. 1) certification (MA package)
- Automotive Qualification: AEC-Q100 Grade 0
Technical Specifications
| Model | Package | Current Sensing Range (IPR) | Sensitivity (Typ.) | Nominal VCC | Optimized Temp. Range | Conductor Resistance (Typ.) | Withstand Voltage (RMS) |
|---|---|---|---|---|---|---|---|
| ACS37002LMABTR-050B5 | MA | 33, 40, 50, 66 A | 60, 50, 40, 30 mV/A | 5 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-066B5 | MA | 66, 80, 100, 133 A | 30, 25, 20, 15 mV/A | 5 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-050U5 | MA | 33, 40, 50, 66 A | 80, 100, 120, 60 mV/A | 5 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-066U5 | MA | 66, 80, 100, 133 A | 60, 50, 40, 30 mV/A | 5 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-050B3 | MA | 33, 40, 50, 66 A | 39.6, 33, 26.4, 19.8 mV/A | 3.3 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-066B3 | MA | 66, 80, 100, 133 A | 19.8, 16.5, 13.2, 9.9 mV/A | 3.3 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-050U3 | MA | 33, 40, 50, 66 A | 79.2, 66, 52.8, 39.6 mV/A | 3.3 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002LMABTR-066U3 | MA | 66, 80, 100, 133 A | 39.6, 33, 26.4, 19.8 mV/A | 3.3 V | 40 to 150 C | 0.85 m | 4.8 kVRMS |
| ACS37002KMABTR-050B5 | MA | 33, 40, 50, 66 A | 40, 50, 60, 30 mV/A | 5 V | 40 to 125 C | 0.85 m | 4.8 kVRMS |
| ACS37002KMABTR-050B3 | MA | 33, 40, 50, 66 A | 26.4, 33, 39.6, 19.8 mV/A | 3.3 V | 40 to 125 C | 0.85 m | 4.8 kVRMS |
| ACS37002LLAATR-015B5 | LA | 10, 12, 15, 20 A | 200, 166.6, 133.3, 100 mV/A | 5 V | 40 to 150 C | 1 m | 3.6 kVRMS |
| ACS37002LLAATR-025B5 | LA | 25, 30, 37.5, 50 A | 80, 66.6, 53.3, 40 mV/A | 5 V | 40 to 150 C | 1 m | 3.6 kVRMS |
| ACS37002LLAATR-015B3 | LA | 10, 12, 15, 20 A | 132, 110, 88, 66 mV/A | 3.3 V | 40 to 150 C | 1 m | 3.6 kVRMS |
| ACS37002LLAATR-025U3 | LA | 25, 30, 37.5, 50 A | 105.6, 88, 70.4, 52.8 mV/A | 3.3 V | 40 to 150 C | 1 m | 3.6 kVRMS |
| General Specifications | |||||||
| Operating Bandwidth | 400 kHz | ||||||
| Typical Response Time | 2 s | ||||||
| Maximum Sensitivity Error (K series) | 1% over temperature | ||||||
| Maximum Offset Voltage over Temperature | 6 mV | ||||||
| Primary Conductor Resistance (MA) | 0.85 m (Typ.) | ||||||
| Primary Conductor Resistance (LA) | 1 m (Typ.) | ||||||
| Isolation Voltage (MA) | 4.8 kVRMS | ||||||
| Isolation Voltage (LA) | 3.6 kVRMS | ||||||
| Operating Ambient Temperature | 40C to 150C | ||||||
| Overcurrent Fault Response Time | 1 s (Typ.) | ||||||
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