LM5027SQX-1/NOPB

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The LM5027SQX-1/NOPB is a synchronous, constant frequency, pulse width modulated (PWM) DC-DC buck controller. It is designed to operate at a switching frequency up to 600kHz, making it suitable for current-mode or voltage-mode, fixed-frequency or constant frequency control applications. Additionally, the device is optimized for low quiescent current operation which results in improved system efficiency. The LM5027SQX-1/NOPB is available in a thermally enhanced for the latest generation of packaging technology. Features such as an internal temperature compensation circuit, automatic non-sync mode, and adjustable under-voltage lockout (UVLO) makes the LM5027SQX-1/NOPB an ideal power management solution for different types of applications.

This device\'s primary application field is that of a DC-DC buck controller for power conversion in a variety of electronic systems. It can be used to regulate outputs in automotive and industrial applications where input voltage ranges are between 4.5V to 60V, and output currents up to 10A. Due to its adjustable switching frequency and wide input range, this device is suitable for applications such as energy conversion systems, power supply systems and battery charging systems.

The working principle of this device is simple. The LM5027SQX-1/NOPB employs an internal PWM to regulate the output voltage. It has two dedicated pins on the device which can be programmed according to the needs of the system being powered. Control inputs for the device are available for the On-Time and Frequency settings. Additionally, the LM5027SQX-1/NOPB provides external synchronization options to synchronize with an external frequency reference. The device also has an internal Short-Circuit Protection (SCP) which when enabled, limits the gating frequency of the controlling circuitry to reduce the danger of short circuit and thus prevent device damage.

Other features of the LM5027SQX-1/NOPB which make it an attractive option for power management applications include an adjustable UVLO set point, a high-side drive for bootstrap operation, and an integrated sleep-mode for power saving. The integrated internal temperature compensation circuit provides improved accuracy over temperature when paired with an appropriate sense resistor. These features, along with low quiescent current operation and low external component count design, make the LM5027SQX-1/NOPB an ideal controller for DC-DC buck topology applications.

In summary, the LM5027SQX-1/NOPB is a synchronous, constant frequency, pulse width modulated DC-DC buck controller. It is designed for low quiescent current operation and works over a wide input voltage range. It has features such as automatic non-sync mode, adjustable under-voltage lockout, integrated temperature compensation, and short-circuit protection. These features make this device ideal for automotive and industrial applications such as energy conversion systems, power supply systems, and battery charging systems.

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