LM3676SD-1.8/NOPB

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An LM3676SD-1.8/NOPB is a switch-mode DC/DC regulator. It is a type of PMIC Voltage Regulator, and falls into the DC DC Switching Regulators category. The device is designed to meet applications requiring high input voltage and output current.

Features

The LM3676SD-1.8/NOPB features a low-noise boost converter, low-noise buck-boost converter, and a buck-mode converter. There\'s also a 1.5A Buck output driver and 4.5A Boost/Buck-Boost output drivers. The device has an operating voltage from 2.7V to 18V, and can deliver up to 3A output current. It also has a thermal shutdown and soft-start functions. Additionally, it offers a wide range of programmable frequency, power, and output voltage.

Applications

The LM3676SD-1.8/NOPB is intended for applications requiring high input voltage and output current. It is typically used in industrial and consumer applications such as portable televisions, computers, portable audio players, media players, and battery-powered consumer devices. It is also suitable for use in electrical and telecommunications systems, instrumentation, and control systems.

Working Principle

The LM3676SD-1.8/NOPB is a three-stage, switch-mode DC/DC regulator. It takes the incoming DC voltage (VIN) and uses a high-frequency switching circuit to convert it into a higher voltage output (VOUT). The device consists of a power switch, an inductor, and a diode. The power switch turns on and off at high speed, creating a pulsed DC input current. This current passes through the inductor and charges up a capacitor. When the switch turns off, this stored energy is transferred to the capacitor, which is connected to the output, creating a higher voltage.

The voltage conversion is done by two stages. In the first stage, the high-frequency pulses are converted into a sinusoidal AC waveform, which is used to charge up an inductor. This AC waveform is then rectified and smoothed. This forms a DC voltage which is adjustable based on the input voltage. In the second stage, the DC voltage is then regulated and output through the output terminals.

Conclusion

The LM3676SD-1.8/NOPB is a type of PMIC Voltage Regulator and falls into the DC DC Switching Regulators category. It is designed to meet applications requiring high input voltage and output current. It has a wide range of programmable frequency, power, and output voltage, and supports a thermal shutdown and soft-start functions. It is typically used in industrial and consumer applications, such as portable televisions, computers, and portable audio players. The device works by taking the incoming DC voltage and using a switch-mode DC/DC regulator to convert it into a higher voltage output.

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