The SPX1117M3-L-1.5/TR is a low dropout (LDO) positive voltage regulator from Exar Corporation, designed to provide a stable 1.5V output voltage. The 'L' likely indicates a lower quiescent current version, enhancing efficiency, particularly in low-power applications. The 'M3' designates the package type, often a surface-mount package. The '/TR' suffix signifies that the device is supplied in Tape and Reel packaging for automated assembly.

Applications

• Post Regulation for Switching Power Supplies: Provides a clean and stable 1.5V output after an initial switching regulation stage.
• Low-Power Microcontrollers: Powers microcontrollers that operate at 1.5V, maximizing battery life.
• Memory Devices: Supplies regulated voltage to memory chips requiring 1.5V.
• Portable Electronics: Used in devices such as smartphones, tablets, and wearables to provide efficient and regulated power.
• Battery-Powered IoT Devices: Efficiently regulates voltage in Internet of Things (IoT) devices, extending battery life in remote or unattended applications.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between input and output, improving efficiency.
• Fixed Output Voltage: Provides a stable and precise 1.5V output without requiring external adjustments.
• Low Quiescent Current: Minimizes power consumption when the regulator is in standby or lightly loaded, further enhancing efficiency.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current draw.
• Thermal Shutdown: Shuts down the regulator if 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.
• Stable with Ceramic Output Capacitors: Designed to work with low-ESR ceramic capacitors, reducing output noise and ripple.
• Tape and Reel Packaging: Supplied in tape and reel format for automated assembly processes.

Benefits

• Extended Battery Life: Low dropout voltage and low quiescent current minimize power dissipation, extending operating time in battery-powered applications.
• Enhanced System Reliability: Integrated protection features safeguard against common electrical faults, increasing product lifespan.
• 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-L-1.5/TR operates over a wide temperature range, making it suitable for various industrial and commercial environments. It typically requires only input and output capacitors for stable operation. The device is lead-free and RoHS compliant.

Consult the datasheet for specific operating conditions, recommended component values, and thermal considerations.