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AUIPS2051L

AUIPS2051L Description

The AUIPS2051L from Infineon Technologies is a low-side power switch designed for automotive-grade applications, integrating a single N-channel MOSFET with a 1:1 input-to-output ratio. This surface-mount (SOT-223) device operates without an external supply voltage, simplifying system design while delivering robust performance with a 60V maximum load voltage and 900mA continuous output current. Its 250mΩ typical Rds(on) ensures efficient power handling with minimal conduction losses. Although marked as obsolete, it remains relevant for legacy designs requiring high reliability in harsh environments.

AUIPS2051L Features

• Automotive-Grade Reliability: Meets stringent automotive standards for temperature and operational stability.
• Integrated Protection: Features fixed current limiting and over-temperature shutdown to safeguard against faults.
• Low-Side Configuration: Optimized for driving inductive/resistive loads (e.g., solenoids, lamps) with 60V load voltage tolerance.
• No Vcc/Vdd Required: Eliminates the need for an external supply, reducing BOM complexity.
• Compact SOT-223 Package: Space-efficient for PCB designs while supporting 1-year MSL 2 moisture sensitivity.
• REACH & ECCN Compliance: Adheres to environmental (REACH unaffected) and export (EAR99) regulations.

AUIPS2051L Applications

• Automotive Systems: Ideal for body control modules (BCMs), seat heaters, or lighting due to its rugged design.
• Industrial Load Switching: Controls relays, small motors, or actuators in 24V/48V industrial systems.
• Legacy Designs: Suitable for maintenance of older automotive/industrial electronics requiring high-voltage, low-current switching.
• Fault-Prone Environments: Protects circuits in overcurrent or thermal overload scenarios (e.g., fuel injectors).

Conclusion of AUIPS2051L

The AUIPS2051L excels in low-side power distribution with its high-voltage tolerance, integrated protections, and automotive durability. While obsolete, its simplicity (no Vcc needed) and efficient Rds(on) make it a pragmatic choice for legacy or cost-sensitive designs. Engineers should evaluate alternatives for new projects but can leverage this IC for existing systems demanding robust, fault-resistant switching.