The SC112CSK-3.3TR is a low dropout (LDO) linear regulator manufactured by Semtech Corporation. This regulator is designed to provide a stable and regulated 3.3V output voltage from a higher input voltage. It is specifically optimized for use in portable devices and other applications that require high efficiency and minimal board space.

Applications

• Portable Electronics: Ideal for powering core logic and I/O interfaces in smartphones, tablets, and portable media players.
• Wireless Communication Devices: Suitable for providing a clean and stable voltage to transceivers, RF front-ends, and baseband processors.
• Post-Regulation for Switching Power Supplies: Effectively filters out ripple and noise generated by switching regulators, resulting in a cleaner power supply.
• Microcontroller Power: Provides a stable and reliable power supply for microcontrollers and associated peripherals.
• FPGA and DSP Applications: Can be used to power digital signal processors (DSPs) and field-programmable gate arrays (FPGAs).

Features

• Low Dropout Voltage: Maintains a stable output voltage even when the input voltage approaches the output voltage.
• Stable with Ceramic Capacitors: Designed for stable operation with low-ESR ceramic output capacitors, reducing the overall cost and size of the power solution.
• Short Circuit Protection: Protects the regulator and the load from damage caused by short circuits.
• Over-Temperature Protection: Shuts down the regulator in the event of excessive temperature to prevent thermal damage.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life in portable applications.
• Small Package: Available in a compact package for efficient use of board space.

Benefits

• Extended Battery Life: The low quiescent current and high efficiency of the SC112CSK-3.3TR contribute to longer battery life in portable devices.
• Improved System Reliability: Short circuit and over-temperature protection features enhance system reliability and prevent damage.
• Reduced Board Space: The compact package size and compatibility with ceramic capacitors minimize board space requirements.
• Simplified Design: Requires minimal external components, simplifying the design process.
• Stable and Clean Power Supply: Provides a stable and regulated 3.3V output, ensuring reliable operation of connected components.

Additional Details

The SC112CSK-3.3TR operates with an input voltage typically in the range of 3.5V to 5.5V. It features excellent line and load regulation, maintaining a stable output voltage under varying input voltage and load conditions. The regulator is typically available in a small outline package suitable for surface mount assembly. The part is supplied in tape and reel (TR) packaging for automated assembly processes.