LX1672-05CPW

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LX1672-05CPW, manufactured by ON Semiconductor, is a multi-function, high integration power management IC that is designed to increase performance and reduce board space in embedded systems. It can be used in a wide range of applications, including battery management, voltage translation, and voltage monitoring.

In the voltage regulator category, the LX1672-05CPW belongs to the DC-DC switching controller class. It includes an integrated differential PWM controller, a 5V or 0.5A LDO, and a step-up power switch regulator. The PWM controller features dual pulse-width modulated outputs, adjustable frequency from 700kHz to 1.25MHz, programmable soft-start, and hill-climbing features. Its purpose is to regulate voltage from an input source such as battery or AC adapter and to ensure that the required output voltage remains within a specified range.

The 5V or 0.5A LDO feature provides dropout voltage protection for the output of the PWM controller. It provides a low dropout voltage, thereby allowing the main power switch to remain in the “on” state even at low input voltages. This reduces power dissipation in the circuit, thus improving overall efficiency.

The step-up power switch regulator, which produces an output voltage of 3.1V to 1.8V, is controlled by the PWM controller. This feature enables the chip to be used in applications where the output voltage needs to be kept within a specific range in order to ensure maximum efficiency. This circuit also uses an internal switching frequency of 1.25MHz to reduce power loss and optimize efficiency.

In addition, the LX1672-05CPW includes a slew rate control feature that adjusts the output voltage transition rate in order to minimize power loss. It also includes thermal shutdown and over voltage protection, ensuring safe operation and minimizing risk of damage to the device.

The LX1672-05CPW is capable of operating with an input voltage ranging from as low as 0.75V to as high as 5.5V, making it suitable for a variety of embedded system applications. It has a peak efficiency of up to 95%, and a thermal shutdown temperature of 140°C. This feature ensures that the performance of the IC stays within limits and prevents it from getting damaged due to excessive heat.

Overall, the LX1672-05CPW is an ideal choice for a wide range of embedded applications due to its high efficiency, wide operating voltage range, integrated features, and protection. Its DC-DC switching controller feature enables the chip to regulate output voltage more efficiently than other PMICs.

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