LM4128DMFX-3.0/NOPB

The LM4128DMFX-3.0/NOPB is a low-dropout (LDO) positive voltage reference from Texas Instruments. It is a simple, low-cost device for providing regulated voltages for electronic circuits like portable electronic devices, appliances, telecommunications, and computer systems. The LM4128DMFX-3.0/NOPB is part of the company\'s Low-Dropout Voltage Reference (LDOV) product family and meets the requirements of RoHS (Restriction of Hazardous Substances) and EP (Environmental Protection) standards.

The LM4128DMFX-3.0/NOPB is a versatile, low-dropout voltage reference that supports a wide range of applications. It can be used in systems where a source of highly regulated voltage is required, or as a reference voltage to drive multiple-channel logic systems. The device features a low-noise output and fast response time, allowing it to be used in applications with high accuracy. The built-in thermal protection and reverse bias protection ensure reliable operation in harsh environments.

The working principle of the LM4128DMFX-3.0/NOPB is simple and straightforward. A series of transistors are used to form an amplifier circuit. The output voltage is kept constant by adjusting the amount of current flowing through the transistors. This adjustment is done by controlling the alteration of the transistor’s current gain, as well as the level of substrate biasing. The output is then regulated by applying a differential amplifier technique to the output voltage and comparing it with a reference voltage.

The LM4128DMFX-3.0/NOPB can provide a regulated voltage of either 3.0V, 3.3V, or 5.0V with a maximum output current of up to 5mA. The device features a low-dropout voltage of less than 0.5V. The output voltage is also adjustable between these three settings, allowing the user to tailor the voltage supply to their application requirements. The operating temperature range of the device is -40°C to +85°C.

Overall, the LM4128DMFX-3.0/NOPB is a robust, low-cost voltage reference that provides a variety of benefits for a wide range of applications. It has a low-dropout voltage, adjustable output voltage, fast response time, and excellent reliability. This makes it an ideal choice for applications in mobile devices, automotive, telecommunication systems, computer systems, and more.