Infineon BTS3028SDLATMA1 Smart High-Side Power Switch: Features and Applications

The Infineon BTS3028SDLATMA1 is a state-of-the-art smart high-side power switch designed to deliver robust performance and advanced protection features for a wide range of automotive and industrial applications. As part of Infineon’s PROFET™ (Protected MOSFET) family of products, this device integrates a vertical power MOSFET with intelligent control and monitoring circuitry into a single compact package, offering designers a reliable and efficient solution for switching resistive or inductive loads.

One of the standout characteristics of the BTS3028SDLATMA1 is its high level of integration. The device incorporates essential protective functions such as overload protection, short-circuit protection, and over-temperature protection, significantly enhancing system reliability while reducing the need for external components. Its reverse battery protection capability ensures safe operation even in the event of incorrect power supply connections, a critical feature in automotive environments.

The switch operates with a low standby current and features very low quiescent current in off-mode, making it particularly suitable for energy-efficient and battery-sensitive applications. With a continuous current rating of up to 0.7 A and a low typical on-state resistance (RDS(on)), it ensures minimal power dissipation, which contributes to higher efficiency and reduced thermal stress.

A key advantage of this device is its diagnostic functionality. It provides open-load detection both in the on-state and off-state, as well as ground-referenced status feedback via a dedicated pin. This enables real-time fault reporting to the microcontroller, facilitating predictive maintenance and quicker system diagnostics.

The BTS3028SDLATMA1 is housed in a surface-mountable PG-TSDSO-14 package, which is optimized for space-constrained PCB designs. Its automotive-grade qualification (AEC-Q100 compliant) ensures high reliability and performance under harsh operating conditions, including wide temperature ranges and significant electrical noise.

Applications of this smart switch are extensive. In the automotive sector, it is ideal for driving various loads such as LED lighting modules, sensors, small motors, and solenoids. It is commonly used in body control modules (BCMs), seat control units, and interior lighting systems. Beyond automotive, it is also well-suited for industrial control systems, power management units, and home automation applications where precise and protected switching is required.

ICGOOODFIND: The Infineon BTS3028SDLATMA1 exemplifies modern power switching technology by combining high integration, comprehensive protection, and diagnostic intelligence in a single device. It offers designers a compact, efficient, and highly reliable solution for demanding DC load control tasks across automotive and industrial fields.

Keywords:

Smart High-Side Switch, Overload Protection, Diagnostic Feedback, Automotive Grade, Low RDS(on)