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Specifications
Mfr. Part #:
ACS71240KEXBLT-010B5
Package:
WFQFN-12(3x3)
Key Attributes
Model Number:
ACS71240KEXBLT-010B5
Product Description
Product Overview
The Allegro ACS71240 is an economical and precise automotive-grade, galvanically isolated current sensor IC designed for AC or DC current sensing in industrial, automotive, commercial, and communications applications. It features a low-offset linear Hall sensor with a low-resistance copper conduction path, minimizing power loss and improving efficiency. The device offers high accuracy due to differential sensing that rejects common-mode magnetic fields and includes an integrated fault comparator for overcurrent detection with ultrafast response times. Available in small, low-profile surface-mount QFN-12 and SOIC-8 packages, it is suitable for space-constrained applications and provides industry-leading noise performance with improved bandwidth.Product Attributes
- Brand: Allegro
- Certifications: AEC-Q100 automotive qualified, UL certified package (SOIC-8 only)
- Material: Pb-free internal construction (solder bump options available)
Technical Specifications
| Model / Specification | Value | Details |
|---|---|---|
| General Specifications | ||
| Supply Voltage (VCC) | 3.3 V or 5 V | Single supply operation; nonratiometric output |
| Primary Conductor Resistance (RIP) | 0.6 m (QFN-12) | |
| Primary Conductor Resistance (RIP) | 1.2 m (SOIC-8) | |
| Bandwidth (BW) | 120 kHz | Small signal -3 dB |
| Response Time (tRESPONSE) | 4 s (typ) | |
| Fault Response Time (tFAULT) | 1.5 s (typ) | Overcurrent detection |
| Operating Ambient Temperature Range (TA) | 40C to 125C (QFN-12) | |
| Operating Ambient Temperature Range (TA) | 40C to 150C (SOIC-8) | |
| Zero-Current Output Voltage (VIOUT(Q)) | 1.65 V (3.3V) / 2.5 V (5V) | Bidirectional |
| Zero-Current Output Voltage (VIOUT(Q)) | 0.5 V (5V) / 0.33 V (3.3V) | Unidirectional |
| Maximum Continuous Current (ICMAX) | 60 A (QFN-12) | TA = 25C |
| Maximum Continuous Current (ICMAX) | 55 A (SOIC-8) | TA = 25C |
| Package Options | ||
| Package Type | QFN-12 | 3 mm 3 mm 0.75 mm (EXB package) with wettable flank |
| Package Type | SOIC-8 | (LCB package) with internally fused path |
| Selection Guide Examples | ||
| Part Number | ACS71240KEXBLT-010B3 | 3.3V, 10A range, 132 mV/A, 10A fault, QFN-12 |
| Part Number | ACS71240KEXBLT-050B5 | 5V, 50A range, 40 mV/A, 50A fault, QFN-12 |
| Part Number | ACS71240LLCBTR-010B3 | 3.3V, 10A range, 132 mV/A, 10A fault, SOIC-8 |
| Part Number | ACS71240LLCBTR-050B5 | 5V, 50A range, 40 mV/A, 50A fault, SOIC-8 |
| Part Number | ACS71240LLCBTR-050U5 | 5V, 0-50A range, 80 mV/A, 50A fault, SOIC-8 |
| Isolation Characteristics (SOIC-8) | ||
| Dielectric Strength Test Voltage (VISO) | 2400 VRMS | Production-tested |
| Working Voltage for Basic Isolation (VWVBI) | 420 VPK or VDC / 297 VRMS | |
2510091532_ALLEGRO-ACS71240KEXBLT-010B5_C27268000.pdf
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