The BD5310xG-CZ / BD5410xG-CZ series of Hall ICs have been designed for automotive applications which require magnetic detection. They are in response to the continuing computerisation of vehicle systems to meet demand for increasing electrification, comfort and safety, using additional electronic control units (ECUs) and sensors for control. Rohm notes that Hall ICs are one of the most adopted sensor types, with an ability to detect position and motor rotation in a non-contact manner that reduces the wear and tear suffered with mechanical switches. In addition, they are also compact and can be equipped with protection circuits.
Rohm explains that it has combined its Hall IC expertise, gained serving the mobile and consumer sectors, with original high withstand voltage processes. The resulting BD5310xG-CZ / BD5410xG-CZ series feature what is claimed to be an industry-leading 42V withstand voltage that enables direct connection to a primary (12V battery) power supply. This helps to improve reliability under battery power, which can fluctuate rapidly depending on the operating conditions.

The wide operating supply voltage range of 2.7V to 38V enables support for a variety of applications for comfort and safety, including door locks, seat position, power windows.

The internal topology also reduces power consumption by approximately 20% compared with general products, to achieve an industry-leading current consumption of 1.9mA, claims Rohm.

Both series comply with the AEC-Q100 (Grade 1) automotive reliability standard while incorporating multiple protection circuits required for vehicle systems.

The BD5310xG-CZ series is a unipolar detection type and the BD5410xG-CZ series provides latch-type detection. There are 11 models in total, available in detection magnetic flux densities ranging from 2.0mT to 28.0mT. Unipolar detection can be used for detecting position in applications such as door open/close and door locks, whereas latch detection is suitable for rotation detection in various motors used in windows and sliding doors.