Infineon BTS4141N Smart High Side Power Switch, SIPMOS, 1.1A, SOT-223-4

The Infineon BTS4141N is a sophisticated N-channel high-side power switch built using advanced smart SIPMOS® technology. Monolithically integrated with a charge pump, this component offers robust and reliable switching for a wide range of demanding applications.

It features a comprehensive suite of embedded protective functions designed to ensure system safety and longevity. These include overload protection, overvoltage protection, and thermal shutdown with automatic restart. The device also provides under-voltage shutdown with auto-restart and hysteresis, making it exceptionally resilient in unstable power conditions.

Engineered for challenging environments, the switch is capable of handling inductive loads and includes a clamp for negative output voltage when switching such loads. Its CMOS-compatible input simplifies integration with modern control logic. Additional safeguards include ESD protection, loss of GND and VBB protection, and reverse battery protection (with an external resistor), alongside very low standby current for improved energy efficiency.

The component also offers enhanced electromagnetic compatibility (EMC), reducing interference in sensitive electronic systems. Its classic PROFET family heritage and AEC-Q100 qualification underscore its suitability for automotive-grade applications, where reliability under extreme conditions is non-negotiable.

With a current limit of 1.1A, an on-state resistance of just 0.2 ohm, and an active high enable input, it provides efficient power management in a compact SOT-223-4 package. Operating reliably across a vast temperature range from -40°C to 125°C, the BTS4141N is a versatile solution for designers seeking a protected, high-performance load switch.