Texas Instruments LM1117MPX-5.0 Fixed LDO Voltage Regulator, 5V/800mA, SOT-223

The Texas Instruments LM1117MPX-5.0/NOPB is a high-performance, low dropout (LDO) linear voltage regulator, designed to provide a stable 5V output from an input voltage of up to 15V. With a low dropout voltage of 1.2V at 800mA, it is an efficient choice for powering sensitive circuits where minimising voltage headroom is critical. Its design ensures reliable operation and maintains output accuracy within a tight ±1% tolerance, thanks to a precision Zener trimmed band gap reference.

This regulator incorporates essential protection features, including current limiting and thermal shutdown, safeguarding both the device and your application from overloads and excessive temperatures. For optimal performance, a minimum of a 10µF tantalum capacitor is required at the output; this non-ceramic capacitor is recommended to enhance transient response and ensure long-term stability.

Key Features & Specifications

• Fixed 5V Output: Delivers a precise and stable 5.0V DC supply.
• High Current Capability: Supports a maximum continuous output current of 800mA.
• Low Dropout Voltage: Features a typical dropout of just 1.2V at full load (800mA), maximising efficiency.
• Excellent Regulation: Provides 0.2% maximum line regulation and 0.4% load regulation for consistent performance under varying conditions.
• Low Noise Output: Generates only 75µVrms of noise, ideal for analogue and digital circuits sensitive to electrical interference.
• Robust Protection: Integrated current limiting and thermal shutdown circuits offer complete protection.
• Industry-Standard Footprint: Features the same pin-out as the classic LM317, allowing for easy design-in and replacement.
• Surface Mount Package: Supplied in a compact SOT-223-3 surface-mount package for space-constrained PCB designs.

Ideal for a wide array of power management applications, this green-compliant,