L4979D-E

The L4979D-E is a Low Dropout Voltage Regulator (LDO) designed to deliver a steady output voltage with very low dropout, providing reliable power to the microcontroller and other sensitive elements in the system. It can deliver up to 1A of output current, making it a suitable solution for applications that require a high output current, such as motion control and industrial applications.

One of the main advantages of the L4979D-E is its low noise operation, making it ideal for noise-sensitive applications such as audio, DSP and radio systems. Thanks to its wide input voltage range, it can accept input voltages from 3V up to 33V, providing a jumper selectable fixed output voltage of 1.2V and 1.8V. This makes it suitable for many applications, from industrial controls to consumer electronics.

The L4979D-E includes both short-circuit and thermal protection, allowing it to remain operational even under extreme temperature conditions or when a fault occurs. It also provides precision current limit, making it ideal for use in systems where the load current is not known. In addition, it is capable of detecting transient load conditions and providing a fast response.

The L4979D-E contains a pass transistor, a voltage reference and a voltage error amplifier. The pass transistor is used to control the output voltage, while the voltage reference and the voltage error amplifier are used to regulate and monitor the output voltage. The output voltage is adjusted by the values of the resistors R2 and R3, which forms a voltage divider that generates a feedback signal to the error amplifier.

The L4979D-E is suitable for use in a variety of applications, from consumer electronics to industrial control. It is a reliable solution for providing low-noise voltage regulation, current limiting, and fast transient load protection. Thanks to its wide input voltage range and adjustable output voltage, it is suitable for many different applications.