LP2980AIM5-2.5

LP2980AIM5-2.5: PMIC - Voltage Regulators - Linear

LP2980AIM5-2.5 is a low-dropout linear regulator (LDO) from Texas Instruments that operates with an input voltage from 1.8 V to 5.5 V and provides an adjustable output voltage from 0.8 V to 4.2 V at output current up to 600 mA. This integrated circuit is designed to provide high power supply accuracy and low temperature drift, while offering improved electrical characteristics over standard linear regulators. It features overcurrent protection (OCP), thermal shutdown (TSD), and reverse battery protection, as well as low noise operation and reverse current blocking.

Application Fields

The LP2980AIM5-2.5 provides superior performance and protection in many applications, including power supplies, mobile and battery-powered electronics, LED lighting, and industrial, automotive, and consumer applications. Its wide range of adjustable output voltages from 0.8V to 4.2V and up to 600mA current output make it suitable for a variety of voltage-regulated applications.

Working Principle

The output voltage level of LP2980AIM5-2.5 is determined by a resistive divider network connected to its FB pin. The higher resistor between the FB pin and output voltage produces a higher voltage output. The output voltage is usually stable depending on the value of the resistor. The resistance values may vary between 10k Ohm and 100k Ohm, depending on the load.

The LP2980AIM5-2.5 also includes a bandgap reference circuit which helps to maintain the most accurate output voltage. This ensures that the output voltage remains consistent even with varying load, input voltage, and temperature. In addition, the current-limit circuitry of LP2980AIM5-2.5 reduces the possibility of the output excessive current due to transient inrush current or switch-mode loads.

Advantages

The LP2980AIM5-2.5 offers several advantages over classic linear regulators. It is a complete, self-contained device that requires minimal external components, eliminating the costly and time-consuming component sourcing of separate voltage reference, current limit protection, etc. It also offers stable output voltage over a wide temperature range, low dropout voltage, and a low quiescent current. These features make it a great choice for applications requiring high accuracy and low noise operation. Furthermore, it is designed with built-in protections like overcurrent protection (OCP), thermal shutdown (TSD), and reverse battery protection, which provide extra safety and reliability.

Conclusion

The LP2980AIM5-2.5 from Texas Instruments is a 3-Terminal Low-Dropout Linear Regulator optimized for mobile and battery-powered electronics. It offers wide adjustable output voltage range, excellent current output capability and high performance characteristics such as low quiescent current and high power supply accuracy. It also includes a wide range of protections to ensure that enabled systems achieve greater levels of life and reliability. The LP2980AIM5-2.5 is an ideal choice for applications requiring high accuracy and low noise and is is suitable for a variety of voltage-regulated applications.