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AUIR3313

AUIR3313 Description

The AUIR3313 from Infineon Technologies is a high-side power switch designed for automotive-grade applications, featuring a single N-channel MOSFET output with a 1:1 input-to-output ratio. This obsolete through-hole device (TO220-5 package) operates with a load voltage range of 6V to 32V, delivering a maximum output current of 23A and an exceptionally low Rds(on) of 5.5mΩ (typical), ensuring minimal power dissipation. Unlike conventional drivers, it requires no separate Vcc/Vdd supply, simplifying system design. Its robust fault protection includes adjustable current limiting and over-temperature shutdown, enhancing reliability in demanding environments.

AUIR3313 Features

• High-Side Configuration: Eliminates the need for low-side grounding, improving flexibility in circuit design.
• Automotive Compliance: Meets stringent automotive-grade requirements for durability and performance.
• Low On-Resistance: 5.5mΩ Rds(on) minimizes conduction losses, improving efficiency.
• Integrated Protections: Adjustable current limiting and thermal shutdown safeguard against overloads.
• Wide Voltage Range: Supports 6V–32V loads, ideal for 12V/24V automotive systems.
• Simple Interface: On/Off control simplifies integration without complex PWM or logic inputs.
• High Current Handling: 23A output suits high-power applications like solenoids or motors.

AUIR3313 Applications

The AUIR3313 excels in automotive and industrial systems requiring robust power switching:

• Automotive Loads: Direct control of headlights, fuel injectors, or HVAC actuators.
• Industrial Drivers: Solenoid/relay drivers, motor controllers, and power distribution modules.
• High-Current Switching: Ideal for battery management systems (BMS) or DC-DC converters.
• Fault-Tolerant Systems: Its protection features suit safety-critical applications like braking or steering systems.

Conclusion of AUIR3313

The AUIR3313 stands out for its high current capability, low Rds(on), and automotive-grade reliability, making it a strong choice for high-power switching in harsh environments. While obsolete, its simplified design (no Vcc requirement) and integrated protections offer advantages over generic MOSFET drivers. Engineers should evaluate alternatives for new designs but may still leverage this IC in legacy or cost-sensitive systems demanding rugged performance.