The LD2979M50 is a high-performance low drop voltage regulator designed and manufactured by STMicroelectronics. This regulator is optimized for low voltage applications that require a low dropout voltage and low quiescent current. It is an ideal choice for battery-powered devices, where extending battery life is crucial.

Key Features

• Low Dropout Voltage: The LD2979M50 boasts a very low dropout voltage of just 0.2 V at a 50 mA load, ensuring efficient operation even when the input voltage is close to the output voltage.
• Output Voltage Precision: The output voltage is guaranteed to be within ±1% at 25°C, and within ±2% in the full temperature range from -40°C to 125°C, providing stable and reliable operation under varying conditions.
• Low Quiescent Current: The device features a very low quiescent current of 0.2 mA (typical) when not in shutdown mode, which is beneficial for battery longevity.
• High Output Current: It can supply up to 50 mA of output current, which is suitable for a wide array of low-power applications.
• Voltage Options: Available in fixed output voltage options, the LD2979M50 version specifically provides a 5.0 V fixed output, catering to standard logic levels in electronic circuits.
• Thermal Overload Protection: The regulator includes thermal overload protection that shuts down the output when the junction temperature exceeds the thermal shutdown level, protecting the device from damage due to overheating.
• Short-circuit Protection: The built-in short-circuit protection enhances the safety and durability of the regulator by preventing it from damage during fault conditions.
• Package Options: The LD2979M50 is available in multiple package options, including the small SOT-23, which is suitable for space-constrained applications.

Applications

The LD2979M50 is versatile and can be used in a variety of applications, such as:

• Mobile phones and other personal communication devices
• Portable media players and audio devices
• Portable instrumentation and test equipment
• Battery-powered equipment
• Low-power microcontrollers and digital logic

With its combination of low dropout performance, precision output voltage, and robust protection features, the LD2979M50 from STMicroelectronics is a reliable choice for designers looking to optimize their power management solutions.