Product Overview
The Allegro ACS70310/1 is a fully monolithic linear Hall-effect current sensor IC designed for high-accuracy current sensing in conjunction with a ferromagnetic core. It features a BiCMOS integrated circuitry and a Hall element sensitive to magnetic flux density orthogonal to the IC package surface. The output is an analog voltage proportional to the applied flux density. Factory-programmed segmented linear temperature compensation ensures 1% sensitivity and 5 mV offset error from 25C to 150C, with customer programmability for further accuracy optimization. With a high operating bandwidth from DC to 240 kHz and a fast 2 s response time, it is ideal for high-frequency automotive inverters and DC/DC converters. The ACS70311 variant includes undervoltage detection (UVD) and low-voltage programming capabilities, offering backward compatibility as a drop-in replacement for the ACS70310. Both devices incorporate diagnostics like broken ground wire detection, clamps, power-on reset, and under/overvoltage detection for safety-critical automotive applications. The IC offers reverse battery protection and high immunity to Electrical Overstress (EOS).
Product Attributes
- Brand: Allegro
- Certifications: AEC-Q100 Grade 0, automotive qualified
- Package: 4-pin SIP (suffix KT)
- Lead Plating: 100% matte-tin
- Lead (Pb) Free: Yes
Technical Specifications
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5 | 5.5 | V | |
| Supply Current | ICC | No load on VOUT; VCC @ 4.5, 5, and 5.5 V | 13 | 15 | mA | |
| Power-On Reset Voltage (High) | VPOR(H) | TA = 25C, VCC rising | 3.7 | 3.9 | 4.3 | V |
| Power-On Reset Voltage (Low) | VPOR(L) | TA = 25C, VCC falling | 3.0 | 3.4 | 3.75 | V |
| High Operating Bandwidth | BWi | Small signal 3 dB, CL = 1 nF, TA = 25C; Sens = 10 mV/G | 240 | kHz | ||
| Response Time | tRESPONSE | TA = 25C, CL = 1 nF, RL= 0 k | 2.1 | 3 | s | |
| Sensitivity 1% (Factory Programmed) | 25C to 150C | |||||
| Offset 5 mV (Factory Programmed) | 25C to 150C | |||||
| Operating Ambient Temperature | TA | 40 | 150 | C | ||
| Package Thermal Resistance | RJA | On 1-layer PCB with exposed copper limited to solder pads | 174 | C/W | ||
| Model | Factory-Programmed Sensitivity (mV/G) | Programmable Sens Range (mV/G) | Low Voltage Programming/ UVD Capable | Package | TA (C) | Packing |
| ACS70310LKTATN-001B5-C | 1 | 0.5 to 1.2 | No | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70310LKTATN-2P5B5-C | 2.5 | 1.2 to 2.5 | No | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70310LKTATN-005B5-C | 5 | 2.5 to 5.5 | No | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70310LKTATN-010B5-C | 10 | 5.5 to 11.5 | No | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70311LKTATN-001B5-C | 1 | 0.5 to 1.2 | Yes | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70311LKTATN-2P5B5-C | 2.5 | 1.2 to 2.5 | Yes | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70311LKTATN-005B5-C | 5 | 2.5 to 5.5 | Yes | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
| ACS70311LKTATN-010B5-C | 10 | 5.5 to 11.5 | Yes | 4-pin KT SIP, TN leadform | 40 to 150 | 4000 pieces per 13-inch reel |
2411280107_ALLEGRO-ACS70310LKTATN-005B5-C_C2654987.pdf
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