STMicroelectronics L4931CDT33 Low Drop Voltage Regulator

The L4931CDT33 is a highly reliable 3.3V low dropout voltage regulator designed by STMicroelectronics, a leader in semiconductor solutions. This regulator is part of the L4931 series, which is known for its low drop performance and is specifically tailored for battery-powered systems where low quiescent current is a significant factor in extending system battery life.

Offering an output voltage of 3.3V, the L4931CDT33 is capable of delivering up to 250mA of output current. The device is designed to maintain high efficiency even at low voltage differentials between the input and output, which makes it suitable for applications that operate close to the battery voltage. Its dropout voltage is typically only 0.4V at maximum output current, ensuring efficient operation and reduced power loss.

The L4931CDT33 comes in a robust TO-252 (DPAK) package, which is suitable for automated assembly and can handle higher levels of thermal dissipation. This package makes the regulator an excellent choice for space-constrained applications while still delivering the thermal performance required for reliability.

One of the key features of this voltage regulator is its very low quiescent current, which is typically only 0.2mA in idle mode and less than 1µA in shutdown mode. This characteristic is particularly beneficial for portable and battery-powered applications where power conservation is critical. Additionally, the device includes various protection features such as thermal shutdown, short-circuit protection, and a SOA (Safe Operating Area) control, making it a safe and reliable choice for sensitive electronics.

The L4931CDT33 is versatile and can be used in a wide range of applications, including mobile phones, PDAs, laptops, and other portable devices. It is also suitable for use in automotive applications, where stable and reliable power supply is crucial.

In summary, the L4931CDT33 from STMicroelectronics is a robust, efficient, and reliable low dropout voltage regulator that offers excellent performance for a wide array of electronic devices, ensuring extended battery life and system reliability.