RJM1013 / RJM1023 · Automotive-grade Vertical / Planar Hall Latch
3.3V~24V wide supply, 40V load-dump and reverse-polarity protection, symmetric switching points producing a near-50% duty square wave - an ideal choice for motor commutation.
RJM1013 (planar Hall) and RJM1023 (vertical Hall) are Hall latches for automotive motor commutation and position sensing. The core control loop of a motor drive is sense–compute–drive, and the Hall sensor supplies the MCU/SoC with accurate rotor position — the prerequisite for commutation and closed-loop control.
The two variants offer vertical and planar sensing directions plus several sensitivity options, giving mechanical designers more freedom to optimize the magnetic circuit layout.
Datasheets & documents
Datasheets, application notes, user manuals and selection guides — each item is labelled with its type and how to get it. Public documents download directly; documents marked confidential require a separate request, and we will confirm your project details before releasing them.
RJM10xx Vertical and Planar Hall-Effect Latches datasheet
Datasheet Direct download 2.86 MB
Need more material such as application notes, reference designs or reliability reports? Contact an application engineer →
Specifications
| Supply voltage range | 3.3V ~ 24V |
|---|---|
| Max forward / reverse supply | 40V/-18 V |
| Load dump capability | Internal protection circuit supports 40V load dump |
| Reverse battery protection | Supported |
| Output | Open-drain output with selectable polarity |
| Junction temperature range | -40°C ~ 175°C |
| Automotive grade | RJM1013: AEC-Q100 Grade 0 (TA -40°C ~ 150°C); RJM1023: Grade 3 (TA -40°C ~ 85°C) |
| Package | SOT23-3L / TO92S-3L |
Key features
- Symmetric latch switching points produce a near-50% duty square wave for smooth motor operation and uniform torque
- Output short-circuit and over-voltage protection with solid-state reliability
- High EMC immunity
- Wide supply range plus reverse-polarity protection tolerates battery fluctuations and accidental reverse connection
Typical applications
- Automotive: commutation for electronic water pumps, electronic oil pumps and similar motors
- Automotive: wiper motors, window lifters and sunroofs
- Automotive: seat motor adjustment
- Industrial: three-phase brushless motor commutation, robot vacuum cleaners, coffee machines, water heaters, power tools
- Industrial: flow meters and tachometers, proximity detection
Application areas
This device is used across the application areas below — open any of them for the full solution and recommended part numbers.