LM2672LD-ADJ Integrated Circuits (ICs)

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LM2672LD-ADJ Application Field and Working Principle

The LM2672LD-ADJ is a DC-DC switching regulator and is part of the PMIC (Power Management IC) family of devices. It is designed to provide accurate, current-mode control of both synchronous and asynchronous DC-DC switching regulators for positive, negative or adjustable-output voltage applications. The LM2672LD-ADJ provides a wide range of flexible features and can be used in applications such as laptops, desktops, servers, and embedded systems.

The LM2672LD-ADJ is capable of regulating output voltages from 0.9V to 6.8V using an internal voltage reference. It offers many options to reduce external component counts, such as frequency synchronization, control loop compensation, and over-temperature protection.

Working Principle

The LM2672LD-ADJ works on the principle of pulse width modulation (PWM). PWM is a method of controlling the on and off times of a pulse of voltage or current to regulate the output current or voltage. The LM2672LD-ADJ uses a fixed frequency oscillator as the basis for its PWM system. The oscillator frequency is adjustable, allowing for a wide range of voltage outputs and response times.

The LM2672LD-ADJ also utilizes two power switches: one for controlling the input power, and another for controlling the output power. These switches work in combination with the frequency oscillator to determine the PWM duty cycle and thus the output voltage. Additionally, the LM2672LD-ADJ has an internal voltage reference, current sense amplifier, and protection circuit that provide protection against over-current and over-temperature conditions.

Conclusion

The LM2672LD-ADJ is a very capable DC-DC switching regulator that can be used in a wide variety of applications. It utilizes pulse width modulation (PWM) to accurately regulate power output, and offers many features to reduce external component counts. It has built-in self-protection and over-temperature protection, making it an effective and reliable choice for power supply regulation in laptop, desktop, server, and embedded applications.

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