STMicroelectronics L4931CDT33-TR Low Dropout Voltage Regulator

The L4931CDT33-TR from STMicroelectronics is a highly reliable, low dropout voltage regulator specifically designed to deliver a well-regulated 3.3V output. This component is part of STMicroelectronics' L4931 series, which is renowned for its low dropout performance and is ideal for applications where efficient power management is essential. With its low dropout voltage of just 0.4V at 250mA of load current, this regulator ensures efficient operation even when the supply voltage is close to the output voltage.

The L4931CDT33-TR is equipped with several features that make it particularly suitable for battery-powered devices, including very low quiescent current, which extends battery life. The output voltage is guaranteed to a precision of ±1% at 25°C, and ±2% in full temperature range, providing a consistent performance across various conditions. It also has an impressive transient response, which is critical for applications that experience rapid load changes.

Safety and reliability are key aspects of the L4931CDT33-TR design. It includes protection features such as thermal shutdown and current limiting to safeguard the device and the load from damage due to overheating or excessive current. Furthermore, the regulator is stable with output capacitors as low as 2.2μF. These characteristics make it a versatile choice for diverse applications, from automotive to consumer electronics.

The L4931CDT33-TR is available in a TO-252 (DPAK) surface-mount package, which is suitable for automated assembly processes and occupies minimal space on a printed circuit board. The device's operating temperature range spans from -40°C to 125°C, allowing it to perform reliably in a wide range of environments.

In summary, the STMicroelectronics L4931CDT33-TR is a high-quality, low dropout voltage regulator that offers excellent voltage accuracy, low quiescent current, and robust protection features. It is an ideal choice for engineers looking for a dependable power management solution that combines performance with compact form factor.