Infineon BTS5090-1EJA: A High-Performance Smart High-Side Power Switch

In the realm of power electronics, efficient and reliable switching solutions are critical for a wide range of applications, from automotive systems to industrial automation. The Infineon BTS5090-1EJA stands out as a premier smart high-side power switch, engineered to deliver superior performance, integration, and protection in a compact package.

This device is designed to control resistive or inductive loads with a continuous current rating of up to 140 mA, making it ideal for driving small motors, solenoids, lamps, and heaters. Its core is built upon Infineon’s advanced SMART7 technology, which integrates a vertical N-channel power MOSFET with a charge pump and comprehensive protection features into a single chip. This high level of integration simplifies circuit design, reduces component count, and enhances system reliability.

One of the key strengths of the BTS5090-1EJA is its robust diagnostic and protection capabilities. It offers precise current sensing through a dedicated sense pin, enabling accurate load monitoring without significant power loss. The device also incorporates multiple protective functions, including overload protection, short-circuit protection, over-temperature shutdown, and over-voltage clamp. These features ensure safe operation under fault conditions, preventing damage to both the switch and the load.

Furthermore, the BTS5090-1EJA is characterized by its very low standby current and ESD robustness, which are essential for automotive and battery-powered applications where low power consumption and high reliability are paramount. The device is housed in a TSDSO-14 package, offering efficient thermal performance and a small footprint.

ICGOODFIND: The Infineon BTS5090-1EJA exemplifies innovation in power switching, combining high efficiency, intelligent features, and robust protection in a single device. It is an excellent choice for designers seeking a reliable and compact solution for low-current switching applications.

Keywords: Smart High-Side Switch, Over-Current Protection, Load Diagnostics, Low Standby Current, Integrated Power MOSFET