LM2679S-3.3/NOPB

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LM2679S-3.3/NOPB is a well-known DC to DC integrated circuit, or IC, manufactured by Texas Instruments. As a member of the TI\'s Power Management Integrated Circuits (PMIC) family, this DC to DC part serves as a voltage regulator. Specifically, it is designed as a switching regulator, an increasingly popular form of voltage regulation. Thanks to its wide variety of features and its competitive pricing, this integrated circuit has become a common component in many electronic devices.

Overview of Applications

The LM2679S-3.3/NOPB is typically used to meet the power requirements of electronic systems needing an output voltage of 3.3V. It is designed to produce such a voltage from a battery or other DC power source. It also provides higher efficiency than linear regulators, making it well-suited for systems needing to convert a wide input voltage range. With its adjustable output voltage, it is suitable for powering a variety of circuit elements such as FPGAS, digital logic, DSPs and embedded microprocessors.

Features

This DC to DC IC is capable of achieving very low-output noise levels, has built-in protections against over-temperature, current limit and short-circuit faults, and supports a wide range of input voltages between 3 -28V. Other features of this switching regulator include a 350kHz switching frequency, adjustable operating frequency, user-selectable peak current limit, and internal compensation. The LM2679S-3.3/NOPB also has an adjustable output voltage range (from 1.35V to 35V) and a maximum output current of 600mA.

Working Principle

At a high level, the LM2679S-3.3/NOPB works by controlling a power switch transistor–often referred to as a power MOSFET–which is responsible for converting the input voltage to the desired output voltage. This is achieved by switching the transistor on and off at a high frequency, often referred to as “switching frequency”. The transistor is drive by a low-power oscillator, which generates a square wave. The power switch is turned on and off at a very high rate, typically greater than 250kHz.

The transistor is also switched in response to information coming from the voltage control loop. This is known as “closed loop control” and works by monitoring the output voltage and using feedback to adjust the on/off cycle of the power switch in order to regulate the output voltage. As a result, the LM2679S-3.3/NOPB is capable of providing a stable output voltage in spite of changes in the input voltage or load conditions.

Advantages

Some of the advantages of using the LM2679S-3.3/NOPB include its wide range of input voltages and its adjustable output voltage. Additionally, this integrated circuit has a high efficiency, meaning that it produces little heat and does not require bulky and expensive heat sinks. The LM2679S-3.3/NOPB is also protected against multiple fault conditions, allowing it to operate safely under a variety of conditions. Finally, it is very easy to use and can be controlled through a few simple pins.

Conclusion

Overall, the LM2679S-3.3/NOPB is an incredibly useful and reliable DC to DC IC. It offers a cost-effective solution to many power-regulation applications and can be used in any situation where an adjustable output voltage is needed. In addition, the integrated circuit is packed with features such as adjustable frequency, adjustable peak current limit, and low-noise operation. Although it is best suited for producing a 3.3V output voltage, it can also support a wide range of input voltages and yields very good efficiency. For these reasons, the LM2679S-3.3/NOPB is a very popular choice among electronics designers.

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