LM2642MTC/NOPB

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The LM2642MTC/NOPB is part of the family of adjustable voltage regulators manufactured by Texas Instruments. This device is a high-efficiency synchronous buck switching regulator that is designed to provide highly regulated output voltages while providing a range of output current capability. The device is designed to provide good energy efficiency and small solution sizes.

The LM2642MTC/NOPB has an application field in automotive, computing, gaming, industrial, telecommunications, and white goods. Its application field can be further subdivided into low power (up to 2 A), high power (2 A to 5 A), and high current (5 A to 10 A) with output voltage ranges between 0.7 V and 14.6 V. The device can accommodate input voltage sources from 4.5 V to 18 V.

The LM2642MTC/NOPB also has an adjustable operating frequency of up to 2 MHz which allows it to optimize converter efficiency for the lowest power dissipation and noise. Additionally, the device features two enable and two PWM control pins for implementing on-demand and pulse skipping modes.

The LM2642MTC/NOPB also features an internal thermal shutdown and overload protection as well as active loop compensation, making it suitable for meeting harsh operating environment requirements. The device also has an integrated power GOOD and power fail signal.

The working principle of the LM2642MTC/NOPB is based on a buck switching regulator which converts a higher input voltage to a lower output voltage. This is done by controlling the power switch, usually a MOSFET, with a PWM signal. During the “on” period of the PWM signal, the power switch turns on and allows energy transfer, while during the “off” periods, the switch is off and the output voltage is regulated by the inductor-capacitor (LC) filter.

The LM2642MTC/NOPB features 3 operating modes, depending on the setting of the PWM signals. These include pulse skipping for low ripple operation, fixed frequency, and PFM for high efficiency under light load conditions. Additionally, the LM2642MTC/NOPB has a dynamic response that allows the converter to respond to fast load changes and reach steady state quickly.

The LM2642MTC/NOPB is a highly efficient and versatile synchronous buck switching regulator that is suitable for providing regulated output voltages from 4.5 V to 18 V with current ratings up to 10 A. This device features a range of features that make it suitable for applications in the automotive, computing, gaming, industrial, telecommunications, and white goods fields. Additionally, its operating principle is based on a buck converter with pulse skipping, fixed frequency, and PFM modes for optimized converter efficiency.

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