LM1117SX-ADJ

The LM1117SX-ADJ is a linear voltage regulator designed to deliver a stability regulation solution with a variable output voltage. This device is part of the LM1117SX family of adjustable three-terminal linear regulator, with a wide input voltage range of 1.2 V up to 16.5 V and up to 1 A output current. The main application fields for this voltage regulator are cellular phones, wireless equipment, set-top boxes, PDAs, and notebook computer applications.

The device operates from an input voltage of 12V, with an adjustable 1.25V output down to 0.8V. It is capable of providing up to 1A of output current and is short-circuit protected. It also features a typical drop-out voltage of 125mV, and is designed with an on-off low power shutdown feature, which enables power-on or power-off with a shutdown current of less than 50uA. The LM1117SX-ADJ also features current limiting and thermal shutdown protection.

The working principle of the LM1117SX-ADJ is based on a voltage regulator circuit that has two main sections; the pass transistor and the reference voltage regulator section. The pass transistor is used to regulate the output voltage and provide the current limit protection. The reference voltage regulator section provides the stable output voltage and is the main component of the circuit. It consists of an IC that contains adjustable and fixed control voltages, which can be used to adjust the output voltage. The output voltage can be adjusted by varying the input voltage or by varying the reference voltage.

The LM1117SX-ADJ is a versatile linear voltage regulator that is suitable for a wide variety of applications. It is easy to use and offers a stable output voltage with adjustable output current of up to 1A. The device provides an excellent performance, including short-circuit protection, thermal shut-down, and current limiting. The LM1117SX-ADJ is ideal for cellular phone applications, where its low dropout voltage and adjustable output voltage make it an ideal choice.