The SPX1117M3-2.5 is a low dropout (LDO) positive voltage regulator from Exar Corporation, designed to provide a stable 2.5V output. It is part of the SPX1117 family, known for its efficiency and reliability in various power management applications. The M3 indicates the package type, typically a surface-mount package.

Applications

• Post Regulation for Switching Power Supplies: Provides a stable and clean 2.5V supply after the initial switching regulation.
• Battery-Powered Devices: Used to regulate voltage efficiently in portable devices, extending battery life.
• Microprocessor Core Voltage Supply: Provides a stable 2.5V supply for microprocessors and microcontrollers.
• FPGA Power Supplies: Powers Field-Programmable Gate Arrays (FPGAs) requiring a regulated 2.5V.
• Instrumentation: Provides a stable voltage to sensitive measuring equipment.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between input and output, maximizing efficiency.
• Fixed Output Voltage: Provides a stable and precise 2.5V output without the need for external adjustments.
• Current Limiting: Protects the regulator and the load from damage due to excessive current.
• 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.
• Stable with Ceramic Output Capacitors: Designed for stable operation with low-ESR ceramic capacitors, reducing output noise.

Benefits

• Increased Efficiency: Low dropout voltage minimizes power dissipation, leading to higher energy efficiency.
• Enhanced Reliability: Integrated protection features safeguard against common electrical faults, increasing product lifespan.
• Simplified Design: Fixed output voltage simplifies design and reduces the number of required external components.
• Precise Voltage Regulation: Ensures consistent performance and accuracy of the powered devices.
• Compact Form Factor: The M3 package allows for use in space-constrained applications.

Additional Details

The SPX1117M3-2.5 operates over a wide temperature range and is suitable for industrial and commercial applications. 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 characteristics.