Product Overview
The A17502 is a single IC solution for rotational position sensing of ring magnet targets, ideal for automotive and industrial electric motor applications, particularly xEV asynchronous motors with narrow pitch targets. It features three Hall elements creating two independent differential channels, processed by digital circuits and algorithms to eliminate offsets and false output transitions. The A17502 provides highly accurate speed and direction information, with advanced calibration for precise switch points over varying air gap, speed, and temperature. It offers high configurability for dual-phase speed and position, or high-resolution speed and direction data. The IC supports Fault Detection mode for ASIL B(D) utilization (assessment pending) and is available in a lead-free 4-pin SIP package (K suffix).
Product Attributes
- Brand: Allegro MicroSystems
- Package Type: 4-Pin SIP (K package)
- Lead Finish: 100% matte-tin-plated lead frame
- Certifications: ASIL B(D) compliant (ISO 26262), assessment pending
Technical Specifications
| Characteristic | Symbol | Notes | Rating | Unit |
|---|---|---|---|---|
| Supply Voltage | VCC | Refer to Power Derating section | 28 | V |
| Reverse Supply Voltage | VRCC | 18 | V | |
| Output Voltage | VOUT | 28 | V | |
| Reverse Output Voltage | VROUT | RPULLUP 1 k | 0.5 | V |
| Output Sink Current | IOUT | Internal current limiting is intended to protect short-term output current, not intended for continuous operation. | 50 | mA |
| Operating Ambient Temperature Range | TA | 40 to 160 | C | |
| Junction Temperature | TJ | 175 | C | |
| Storage Temperature Range | Tstg | 65 to 170 | C | |
| Supply Voltage | VCC | Voltage across VCC and GND | 4 24 | V |
| Undervoltage Lockout | VCC(UV) | 3.99 | V | |
| Supply Current | ICC | 10 15 | mA | |
| Reverse Supply Current | IRCC | VCC = 18 V | 10 0 | mA |
| Power-On Time | tPO | Time from VCC > VCC(min) to when sensor IC output is valid | 1 | ms |
| Output Low Voltage | VOUT(LOW) | Fault Detection Mode disabled; IOUT = 10 mA | 0.165 0.35 | V |
| Output High Voltage | VOUT(HIGH) | Fault Detection Mode disabled | VPULLUP | V |
| High-speed switching bandwidth | up to 40 | kHz | ||
| Package Thermal Resistance | RJA | Single-sided PCB, with copper limited to solder pads | 177 | C/W |
2401241132_ALLEGRO-A17502POKATN-SDFUYJE_C3349899.pdf
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