LM3370TL-3806/NOPB

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Voltage regulators are devices that are integrated into products to adjust the output voltage or power. DC to DC switching regulators are perhaps the most common type of voltage regulator. They feature an internal switching element that act as a power source to regulate the output voltage. The LM3370TL-3806/NOPB voltage regulator is part of Texas Instruments’ broad portfolio of high performance DC to DC switching regulator solutions.

LM3370TL-3806/NOPB Application Field

The LM3370TL-3806/NOPB is a synchronous buck converter optimized for low power, portable applications. It is capable of a wide input voltage range from 3.3 V to 16 V and has an adjustable output voltage from 0.6 V to 5 V. It is available in a compact 8-bump WSON package and comes with built-in current limit, thermal shutdown, and short-circuit protection for use in a variety of applications.

The LM3370TL-3806/NOPB is suitable for a wide range of applications, including:

• Mobile phones and other handheld devices
• Laptops and PCs
• Disk drives
• Embedded and consumer electronics

Working Principle

The LM3370TL-3806/NOPB uses a synchronous buck converter topology to step down input voltages. The regulator is based on a synchronous rectified buck converter and consists of an input voltage source, a low side MOSFET, a high side MOSFET, an inductor, a compensation network, and an output filter capacitor.

The main elements of the LM3370TL-3806/NOPB voltage regulator are:

• Switching controller – this implements the control loop for the synchronous rectified buck converter and ensures the output voltage remains stable.
• High side switch (HS) and Low side switch (LS) – The HS and LS switches function as a switch-mode power source and control the voltage output at the output rail.
• Inductor – The inductor stores energy and acts as a filter, smoothing out the output voltage.
• Compensation network – The compensation network tunes the parameters of the feedback loop to ensure the output voltage remains in the specified range.
• Output filter capacitor – The output filter capacitor minimizes output ripple and ensures the output voltage remains within the voltage regulation range.

The LM3370TL-3806/NOPB voltage regulator operates by switching the high side and low side MOSFETs on and off at a certain frequency. This switching process is controlled by the switching controller. A current sense amplifier is also incorporated to provide feedback to the controller and adjust the switching frequency. This regulates the output voltage to maintain the set output voltage within the voltage regulation range.

Features and Benefits

The LM3370TL-3806/NOPB is a high performance DC to DC switching regulator solution with a wide range of features. Its main features and benefits include:

• Wide input voltage range – The input voltage range can be adjusted from 3.3 V to 16 V.
• Adjustable output voltage – The output voltage range is adjustable from 0.6 V to 5.0 V.
• High efficiency – The LM3370TL-3806/NOPB has a high efficiency of up to 92%.
• Adaptive loop – The LM3370TL-3806/NOPB has an adaptive loop feature to automatically compensate for variations in input and output voltage.
• Built-in protection – The LM3370TL-3806/NOPB has built-in current limit, thermal shutdown, and short-circuit protection.
• Compact package – The LM3370TL-3806/NOPB comes in an 8-bump WSON package.

Conclusion

The LM3370TL-3806/NOPB is a high performance DC to DC switching regulator solution from Texas Instruments. It offers a wide input voltage range of 3.3 V to 16 V, an adjustable output voltage range of 0.6 V to 5 V, high efficiency of up to 92%, and built-in current limit, thermal shutdown, and short-circuit protection. It is ideal for low power, portable applications such as mobile phones, laptops, PCs, disk drives, and embedded and consumer electronics.

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