STMicroelectronics L4931CD25 Low Drop Voltage Regulator

The L4931CD25 is a highly reliable low drop voltage regulator designed and manufactured by STMicroelectronics, a leader in the semiconductor industry. This component is specifically engineered to provide a stable and precise output voltage with a low dropout voltage, making it ideal for battery-powered applications where maximizing battery life is crucial.

With a fixed output voltage of 2.5V, the L4931CD25 is capable of delivering up to 250 mA of output current. This makes it suitable for a wide range of applications, from powering microcontrollers and digital circuits to providing a stable reference voltage for analog-to-digital converters.

One of the key features of the L4931CD25 is its low dropout voltage, which ensures that it continues to operate effectively even when the input voltage is very close to the output voltage. This characteristic is particularly beneficial in situations where the supply voltage may fluctuate or drop, such as in battery-powered devices during the end of their discharge cycle.

The device also boasts excellent stability, achieved through the use of only a small ceramic capacitor of 2.2 µF at the output. This low external part count not only simplifies the design but also reduces the overall cost and footprint of the power supply circuit.

For protection, the L4931CD25 features both thermal shutdown and current limiting. The thermal shutdown protects the device from damage due to overheating, while the current limiting function prevents the regulator from delivering excessive current that could potentially harm the powered circuit or the regulator itself.

The L4931CD25 comes in a TO-252 (DPAK) package, known for its compact size and excellent power dissipation characteristics. This packaging makes the regulator an excellent choice for space-constrained applications while ensuring that it can handle the thermal demands of a wide range of operating conditions.

With its combination of low dropout performance, reliability, and protection features, the L4931CD25 from STMicroelectronics is an excellent choice for designers looking to create efficient and robust power supply circuits for their electronic devices.