The SPX1117M3-3.3/TR is a low dropout (LDO) positive voltage regulator manufactured by Exar Corporation. It delivers a stable 3.3V output and is designed for use in various electronic applications where efficient and regulated power is required. The '/TR' suffix indicates that the component is supplied in Tape and Reel packaging for automated assembly processes. This regulator is known for its low dropout voltage, overcurrent protection, and thermal shutdown features.

Applications

• Post Regulation for Switching Power Supplies: Provides a clean and stable 3.3V output after a switching regulator stage.
• Microcontroller Power Supply: Powers microcontrollers requiring a 3.3V supply voltage.
• FPGA Power Supply: Supplies power to Field-Programmable Gate Arrays (FPGAs) that operate at 3.3V.
• Networking Equipment: Used in routers, switches, and other networking devices to provide a stable 3.3V rail.
• Battery-Powered Devices: Efficiently regulates voltage in portable devices, extending battery life.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between the input and output, maximizing efficiency.
• Fixed Output Voltage: Provides a stable and precise 3.3V output voltage without the need for external adjustments.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current draw.
• Thermal Shutdown: Shuts down the regulator when the temperature exceeds a safe limit, preventing damage from overheating.
• Short Circuit Protection: Protects the regulator from damage in the event of a short circuit condition on the output.
• Stable with Ceramic Output Capacitors: Designed to work with low-ESR ceramic capacitors, minimizing output noise and ripple.
• Tape and Reel Packaging: Supplied in tape and reel format for automated assembly.

Benefits

• Improved System Efficiency: Low dropout voltage minimizes power dissipation and increases overall efficiency.
• Enhanced Reliability: Built-in protection features safeguard against common electrical faults, extending the lifespan of the regulator and the connected devices.
• Simplified Design: Fixed output voltage and stability with ceramic capacitors reduce design complexity and component count.
• Precise Voltage Regulation: Ensures consistent performance and accuracy of the powered devices.
• Suitable for Automated Assembly: Tape and reel packaging facilitates efficient manufacturing processes.

Additional Details

The SPX1117M3-3.3/TR is designed to operate over a wide temperature range, making it suitable for various industrial and commercial applications. It typically requires input and output capacitors for stable operation. The M3 package is a surface-mount package.

The device is lead-free and RoHS compliant. Consult the datasheet for specific operating conditions, recommended component values, and thermal considerations.