LD3985M25R Low-Dropout Voltage Regulator

The LD3985M25R from STMicroelectronics is a high-quality, low-dropout voltage regulator (LDO) designed for applications requiring a highly stable and clean power supply. This LDO regulator is capable of delivering a fixed output voltage of 2.5V with an input voltage range of 2.5V to 6V, making it suitable for a wide array of electronic devices.

Key Features

• Low Dropout: With a low dropout voltage, this device can maintain a stable output even when the input voltage is close to the output voltage, ensuring efficient operation under various conditions.
• High Accuracy: The output voltage is guaranteed to a tolerance of ±1% at 25°C, providing precise voltage regulation for sensitive electronic components.
• Low Quiescent Current: The LD3985M25R boasts a very low quiescent current, which is beneficial for battery-powered applications where power conservation is crucial.
• Thermal Shutdown and Short-Circuit Protection: Built-in safety features protect the device and the application from damage due to overheating and short-circuit conditions.
• Stable with Low ESR Capacitors: The regulator is stable with ceramic capacitors, allowing for a more compact design with better reliability compared to tantalum or aluminum electrolytic capacitors.

Applications

With its robust feature set, the LD3985M25R is an excellent choice for a variety of applications that require a reliable and constant voltage supply. These include:

• Battery-powered equipment
• Portable devices
• Microcontroller power supply
• Reference voltage circuits
• Personal digital assistants (PDAs)

This LDO is presented in a small SOT-23-5 package, making it ideal for space-constrained applications. Its performance and size make the LD3985M25R a versatile power management solution for designers looking to enhance the efficiency and longevity of their electronic products.