Infineon High Side 1, High Side Power Switch Power Switch IC 4-Pin, SOT-223

Infineon BTS4140N Series Power Switch IC, 1.7W Power Rating, 60V Maximum Supply Voltage - BTS4140NHUMA1

This power switch IC is a high-side switch designed for automotive environments to control multiple loads from a single input. It operates across a broad supply range and is intended for surface-mount applications where thermal endurance and compact packaging are required. The device integrates protection and switching functionality suited to vehicle electrical systems and similar low-voltage platforms.

Features and Benefits:

• 60V maximum supply tolerates transient voltage events and spikes
  4.9V minimum supply allows reliable low-voltage start-up
  0.2A operating current supports moderate current loads per channel
  3Ω Rds(on) reduces conduction losses under load
  1.7W power rating enables sustained power dissipation
  150°C maximum operating temperature handles elevated thermal conditions

Applications

• Suitable for automotive load switching with multiple outputs
  Used with electronic control modules requiring single-input control
  Ideal for surface-mount assemblies on compact PCBs
  Can be used for switching resistive and small inductive loads
  Used for aftermarket vehicle accessory distribution systems

How many outputs can be controlled from one input?

The device provides five outputs operable from a single control input allowing centralised switching of several circuits.

What package and mounting type does it use?

It is supplied in a SOT-223 package designed for surface-mount assembly to save board space and simplify placement.

What pin count should be allocated in footprint design?

The component requires a four-pin footprint, so PCB landings and routing must accommodate signal and power connections accordingly.

What temperature range must be considered for deployment?

Design for an ambient range down to -40°C and up to a device-rated maximum of 150°C to ensure operational integrity.