LM3676SD-ADJ Integrated Circuits (ICs)

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LM3676SD-ADJ is an adjustable, high-efficiency, synchronous step-down converter from Texas Instruments. Its wide range of input voltages and high switching frequency enable the delivery of up to 2A output current for quantities up to 1MHz. The device includes an internal power switch, a low-side MOSFET, a non-sync PWM controller and numerous protection features. With a wide range of adjustable output voltage, this device is suitable for a range of applications such as LED lighting, battery charging and portable device power supplies.

Application Field

The LM3676SD-ADJ is a suitable choice for applications such as LED lighting, battery charging, and power supplies for portable devices. Due to its adjustable output voltage, the device can be customized to the exact output voltage requirements for each individual application. The device has built-in protection features to provide greater system reliability and is thermally enhanced for higher efficiency. Additionally, it is available in a variety of packages to fit limited spaces and is small enough for many applications. The device also has built-in loop compensation and can support a wide range of output inductors.

Working Principle

The LM3676SD-ADJ is an adjustable, synchronous step-down converter that works by converting a higher input voltage to a lower output voltage by switching off and on an internal power switch at a frequency determined by a voltage-controlled oscillator (VCO). The internal MOSFET switch is connected to the input voltage source and the output is connected to the heart of the loop (the inductor and the output capacitor). The input voltage and the output voltage are regulated by changing the duty cycle of the internal switch at the VCO frequency. The LM3676SD-ADJ device includes features specifically designed to protect the device and the system from faults such as over-current, over-voltage, and under-voltage. Additionally, the device is built to handle a wide operating temperature range, allowing it to be used in a wide variety of applications.

In summary, the LM3676SD-ADJ is a high-efficiency, adjustable, synchronous step-down converter from Texas Instruments. It is suitable for many applications, including LED lighting, battery charging, and portable device power supplies and is thermally enhanced for higher efficiency. The device is protected against faults and is available in a variety of packages to fit in limited spaces. Additionally, it is built to handle a wide operating temperature range and can support a wide range of output inductors.

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