Product Overview
The ACS37002LMC is a fully integrated, high-accuracy Hall-effect current sensor designed for precise current measurements in various applications. Factory-trimmed for optimal performance without customer programming, it features differential sensing to reject common-mode magnetic fields. The SOICW-16 package offers high isolation (5 kVRMS withstand voltage) and low power dissipation due to its 0.27 m conductor resistance. Key features include externally configurable logic gain selection for four sensitivity levels, a fast overcurrent fault output for system protection with an analog input threshold, and a stable reference voltage for differential measurements. The device is RoHS compliant and lead-free.
Product Attributes
- Brand: Allegro MicroSystems
- Package Type: SOICW-16 (MC)
- Certifications: UL60950-1 (ed. 2) and UL 62368 (ed. 1), AEC-Q100 qualified
- Compliance: RoHS compliant, lead (Pb) free
- Lead Finish: 100% matte-tin-plated
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|---|
| Common Electrical Characteristics | ||||||
| Supply Voltage (5V devices) | VCC | 4.5 | 5 | 5.5 | V | |
| Supply Voltage (3.3V devices) | VCC | 3.15 | 3.3 | 3.6 | V | |
| Supply Current (5V devices) | ICC | No load on VIOUT or VREF | 13 | 18 | mA | |
| Supply Current (3.3V devices) | ICC | No load on VIOUT or VREF | 12 | 15 | mA | |
| Primary Conductor Resistance | RIP | TA = 25C | 0.27 | m | ||
| Bandwidth | BW | Small signal 3 dB, CL = 5.7 nF | 400 | kHz | ||
| Response Time | tRESPONSE | TA = 25C, CL = 5.7 nF, 90% input to 90% of 1 V output swing | 1.1 | 2.5 | s | |
| Overcurrent Fault Response Time | tOCF | Time from IOCF-OP to fault assertion | 1 | 1.5 | s | |
| Isolation Characteristics | ||||||
| Withstand Voltage | VISO | Agency rated for 60 seconds per UL 62368-1 (edition 3) | 5000 | VRMS | ||
| Working Voltage for Basic Isolation | VWVBI | According to UL 62368-1 (edition 3) | 1144 | VRMS | ||
| Working Voltage for Reinforced Isolation | VWVRI | According to UL 62368-1 (edition 3) | 572 | VRMS | ||
| Part Number Variants (Example: ACS37002LMCATR-050B5) | ||||||
| Part Number | ||||||
| Current Sensing Range (IPR) | Gain Sel 00 | 33.3 | 66.7 | A | ||
| Sensitivity (Sens) | Gain Sel 00 | 30 | 60 | mV/A | ||
| Nominal VCC | 5 | V | ||||
| Optimized Temp. Range | TA | 40 | 150 | C | ||
| Packing | 1000 pcs/reel | |||||
| Part Number | ||||||
| Current Sensing Range, IPR (A) | Gain_Sel Configuration | Sens (mV/A) | Max IP (A) | |||
| ACS37002LMCATR-050B5 | 00 | 40 | 50 | |||
| 01 | 50 | 40 | ||||
| 10 | 60 | 33.3 | ||||
| 11 | 30 | 66.7 | ||||
| ACS37002LMCATR-066B5 | 00 | 30 | 66.7 | |||
| 01 | 25 | 80 | ||||
| 10 | 20 | 100 | ||||
| 11 | 15 | 133.3 | ||||
| ACS37002LMCATR-090B5 | 00 | 22.2 | 90 | |||
| 01 | 18.5 | 108 | ||||
| 10 | 14.8 | 135 | ||||
| 11 | 11.1 | 180 | ||||
| ACS37002LMCATR-050U5 | 00 | 80 | 50 | |||
| 01 | 100 | 40 | ||||
| 10 | 120 | 33.3 | ||||
| 11 | 60 | 66.7 | ||||
| ACS37002LMCATR-050B3 | 00 | 26.4 | 50 | |||
| 01 | 33 | 40 | ||||
| 10 | 39.6 | 33.3 | ||||
| 11 | 19.8 | 66.7 | ||||
| ACS37002LMCATR-066B3 | 00 | 19.8 | 66.7 | |||
| 01 | 16.5 | 80 | ||||
| 10 | 13.2 | 100 | ||||
| 11 | 9.9 | 133.3 | ||||
| ACS37002LMCATR-090B3 | 00 | 14.7 | 90 | |||
| 01 | 12.2 | 108 | ||||
| 10 | 9.8 | 135 | ||||
| 11 | 7.3 | 180 | ||||
Note: The Gain_Sel Pin Performance table provides specific sensitivity (Sens) and maximum current sensing range (Max IP) for each combination of GAIN_SEL_1 and GAIN_SEL_0 pins.
Note: The Overcurrent Fault Operating Range (IOCF-OR) is typically 50% to 200% of Full-Scale (FS) for bidirectional modes and 25% to 100% for unidirectional modes, depending on the part number and VCC.
2506301205_ALLEGRO-ACS37002LMCATR-050B5_C3684447.pdf
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