LM2677SX-3.3/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LM2677SX-3.3/NOPB is one of many DC-DC switching regulator integrated circuits available today. They are designed to step down a higher voltage source, in this case 3.3V in order to supply a constant and regulated 3.3V voltage to the target load. It uses pulse width modulation (PWM) to regulate the output voltage, and with no external components required, it can maximize efficiency while keeping components and cost at a minimum, making it a great choice for use in a variety of portable or low-power applications.

Like any other DC-DC switching regulator, the LM2677SX-3.3/NOPB regulates the output voltage by oscillating between an on and off cycle. A higher voltage is supplied to the regulator, and as it toggles between on and off, the voltage is stepped down to the target 3.3V output. This is done using an N-Channel MOSFET (in lieu of a transistor) and a rectifier. The oscillation between on and off is controlled by the oscillator circuit and PWM controller, which will be discussed later.

The LM2677SX-3.3/NOPB has a few distinctive features. One of these is the Synchronous Rectification technology, which improves efficiency by drawing energy from the source directly into a power MOSFET, rather than an inductive coil. This allows for faster switching, higher efficiency, and fewer generated losses.

Also present is the Burst Mode operation, which is made use of when the device needs to regulate a light load. During the Burst Mode operation, the oscillator adjusts its duty cycle to the load, allowing efficiency to stay high even with a small load. Of course, when the load increases, the device will automatically switch back to continuous mode and switch frequency will be held constant.

Finally, the chip features an internal Current Limit Protection circuit, which shuts down the device when the output current achieves its set limit. This is useful in large-scale applications to prevent damage to the device should the load draw more current than it can handle.

The LM2677SX-3.3/NOPB is a great choice for low-power and portable applications. Its Synchronous Rectification technology, Burst Mode operation, and Current Limit Protection make it an ideal choice for a wide variety of projects. Its performance will not disappoint, especially in the most demanding of environments.

The specific data is subject to PDF, and the above content is for reference