The TLE4261-2 is a monolithic integrated low-dropout voltage regulator, designed for various automotive and industrial applications where a stable and regulated voltage supply is essential. Manufactured by Siemens (now Infineon Technologies), this regulator provides a fixed output voltage with integrated protection features.

Applications

• Automotive ECUs (Engine Control Units): Provides a stable voltage supply for sensitive electronic components in automotive control systems.
• Industrial Control Systems: Used in programmable logic controllers (PLCs) and other industrial automation equipment.
• Microcontroller Power Supplies: Regulates the voltage for microcontrollers in embedded systems.
• Sensor Power Supplies: Supplies regulated power to sensors in automotive and industrial environments.
• General-Purpose Voltage Regulation: Suitable for any application requiring a stable 5V supply from a higher voltage source.

Features

• Fixed Output Voltage: Provides a stable, fixed 5V output voltage.
• Low-Dropout Voltage: Operates with a low difference between the input and output voltage, maximizing efficiency.
• Short-Circuit Protection: Protects the regulator and connected circuitry from damage due to short circuits.
• Over-Temperature Protection: Shuts down the regulator if the junction temperature exceeds a safe limit.
• Reverse Polarity Protection: Protects against damage from accidental reverse polarity connection.
• Wide Input Voltage Range: Operates over a broad input voltage range, suitable for automotive applications.

Benefits

• Stable Voltage Supply: Ensures reliable operation of sensitive electronic components by providing a consistent voltage.
• Robust Protection Features: Protects against common electrical faults, enhancing system reliability.
• High Efficiency: Low-dropout operation minimizes power dissipation, improving overall system efficiency.
• Simplified Design: Requires minimal external components, simplifying the design process.
• Automotive Grade: Qualified for use in harsh automotive environments.

Technical Specifications (Typical):

• Output Voltage: 5V (fixed)
• Input Voltage Range: 6V to 45V
• Dropout Voltage: Typically 0.5V at rated current
• Output Current: Up to 400mA or 500mA depending on the specific variant - consult the datasheet.
• Quiescent Current: Low quiescent current for battery-powered applications.
• Operating Temperature Range: -40°C to +150°C
• Package: PG-TO252-5-11 (DPAK)

For detailed electrical characteristics, application notes, and package dimensions, refer to the official Infineon Technologies TLE4261-2 datasheet. Always consult the datasheet for specific design requirements and recommendations.