LMR23630AFQDDAQ1

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LMR23630AFQDDAQ1 Application Field and Working Principle

The LMR23630AFQDDAQ1 is an energy-efficient, high performance, DC-DC buck solvent regulator with integrated internal MOSFETs, engineered and manufactured by Texas Instruments. It is a member of the latest generation of point-of-load (POL) regulators, which offers exceptional power density, high efficiency and fast transient response for space-constrained applications.

The LMR23630AFQDDAQ1 provides up to 14A of output current from an input voltage range from 4.5V to 32V, and is especially well-suited for use in high-current, high-efficiency applications. The integrated MOSFETs enable it to achieve high efficiency and a low profile, while the 5mm x 8mm QFN package saves board space. Its low operating current consumption of 400µA enables the LMR23630AFQDDAQ1 to achieve extremely high efficiency at light to moderate loads.

With a power-good flag, the LMR23630AFQDDAQ1\'s soft-start feature and fixed switching frequency, users can easily complete the design of switched power supplies and avoid external components, while minimizing system noise. In addition, the device includes various protection features such as over-current and over-temperature protection.

Working Principle

The LMR23630AFQDDAQ1 is a voltage-mode switching regulator that utilizes a high-performance buck topology. The regulator operates by using a pulse-width modulation (PWM) control technique to intelligently regulate the output voltage. It works by rapidly switching the internal MOSFET switch to transfer power from the input to the output. The duty cycle of this switch is accurately controlled by the regulator’s internal control loop. The regulator monitors the output voltage and adjusts the duty cycle of the switch to maintain the desired output voltage.

The regulator also features a shoot-through protection circuit, which prevents both the high side and low side MOSFETs from simultaneously being on, thereby preventing power loss and generating noise. This feature is important in high efficiency applications where fast transient response is essential.

Conclusion

The LMR23630AFQDDAQ1 is a high-performance DC-DC buck regulator with integrated internal MOSFETs that is well-suited to high-current and space-constrained applications. With a wide input voltage range of 4.5V to 32V, up to 14A of output current, and a low operating current consumption of 400µA, the device can deliver extremely high efficiency at modest load levels. In addition, it features a power-good flag and common protection features such as over-current and over-temperature protection for reliable operation and a 5mm x 8mm QFN package for space savings.

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