Product Overview
The Allegro ACS37002LMC is a fully integrated, high-accuracy Hall-effect current sensor designed for precise current measurements in a wide range of applications. Featuring a compact SOICW-16 package, it offers factory-trimmed high accuracy without customer programming. The device employs differential sensing to reject common-mode magnetic fields and provides high isolation with a 5 kVRMS withstand voltage and low 0.27 m conductor resistance for efficient low-power operation. Its externally configurable functional features, including four selectable sensitivities via two logic gain selection pins and an adjustable fast overcurrent fault output, enhance design flexibility and system protection. The ACS37002LMC is ideal for applications requiring reliable current monitoring in fast control loops or high-speed current sensing, with a 400 kHz bandwidth and 1.1 s typical response time.
Product Attributes
- Brand: Allegro MicroSystems
- Package Type: SOICW-16 (MC)
- Certifications: UL60950-1 (ed. 2), UL 62368 (ed. 1), AEC-Q100 qualified
- Compliance: RoHS compliant, lead (Pb) free
- Lead Finish: 100% matte-tin-plated leadframes
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Product Family | ACS37002LMC | 400 kHz, High Accuracy Current Sensor |
| Package | SOICW-16 (MC) | |
| Internal Conductor Resistance | 0.27 m | Typical at 25C |
| Operating Bandwidth | 400 kHz | |
| Typical Response Time | 1.1 s | |
| Maximum Sensitivity Error (over temp) | 1.5 % | |
| Maximum Offset Voltage (over temp) | 10 mV | |
| Withstand Voltage | 5 kVRMS | |
| Operating Temperature Range | -40C to 150C | |
| Overcurrent Fault Response Time | 1 s (typical) | |
| Gain Settings | Externally configurable | Four adjustable gain levels via 2 logic pins |
| Overcurrent Fault Threshold | Pin adjustable | Proportional to current range |
| Isolation Voltage (Agency Rated) | 5 kVRMS | For 60 seconds per UL 62368-1 |
| Basic Isolation Voltage | 1144 VRMS / 1618 VDC | |
| Reinforced Isolation Voltage | 572 VRMS / 809 VDC | |
| Part Number Variants (Example: ACS37002LMCATR-050B5) | Supply Voltage | 5 V or 3.3 V |
| Output Directionality | Bidirectional (B) or Unidirectional (U) | |
| Current Sensing Range (A) | 33.3 to 180 A (depending on variant) | |
| Optimized Temp. Range | -40C to 150C (L) | |
| Supply Voltage (Nominal) | 5 V or 3.3 V | |
| Supply Current (Typical) | 18 mA (5V) / 15 mA (3.3V) | No load |
| Power-On Reset Voltage (Rising) | 2.9 V (typ) | |
| Power-On Time | 100 s (typ) | After VCC reaches VPOR(H) |
| Overvoltage Detection Threshold (Rising) | 6.4 V (typ) | For 5V devices |
| Overcurrent Fault Hysteresis | 6% FS (5V device) / 9% FS (3.3V device) | Typical |
2412111218_ALLEGRO-ACS37002LMCATR-050B3_C3684461.pdf
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