LP8728QSQX-C/NOPB

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LP8728QSQX-C/NOPB is a DC/DC buck switching regulator specially designed for smartphone applications. The device is manufactured by National Semiconductor, and its input voltage range is between 2.7V to 5.5V, making it suitable for running on 1-Cell Li-ion battery. With an adjustable output voltage from 0.8V to 3.6V, and can support up to 4A of continuous current. It is designed and optimized for Quick-Pwm™ control scheme with fast transient responses. The LP8728QSQX-C/NOPBis a highly efficient device, so it is capable of providing excellent power and performance for mobile applications.

The LP8728QSQX-C/NOPB is widely used in mobile applications, as it offers a low solution footprint that minimizes the need for external components and components, while still providing high power output efficiencies and excellent performance. The LP8728QSQX-C/NOPB stands out in the mobile power management market as it optimizes the device´s switching frequency and voltage variation interval; this eliminates issues regarding any unnecessary interference. It features protective features such as a thermal shutdown, over-current protection, short-circuit protection and pulse-by-pulse current limiting.

The LP8728QSQX-C/NOPB DC/DC buck switching regulator offers a wide variety of features to maintain and optimize power delivery for specific operational conditions. The switching frequency and voltage variation interval can be programmable with external resistors, by setting the appropriate resistor values, the efficiency of the system can be maximized. The LP8728QSQX-C/NOPB also provides a synchronization feature, which allows designers to synchronize the switching cycle of the device with an external clock signal. This allows for improved system performance.The LP8728QSQX-C/NOPB also features a soft-start feature, which gradually increases the output voltage while reducing input current spikes; this feature is useful in applications that require current limited startup.

In terms of mode selection, the LP8728QSQX-C/NOPB features a wide range of operating modes including PWM, pulse-skipping, PFM, and low-quiescent current modes. In PWM mode, the device operates at a fixed frequency (fixed by the external clock signal), and the duty cycle is modulated to control the output voltage. In pulse-skipping mode, the fixed frequency is used to gradually decrease the duty cycle, and output voltage is controlled by the frequency variation. In PFM mode, the frequency is dynamically changing based on the load condition, and the duty cycle is kept constant to regulate the output voltage. In low-quiescent current mode the device automatically enters a no-load state, reduces the switching frequency, and limits the control loop output voltage to allow for very low quiescent currents.

Overall, the LP8728QSQX-C/NOPB DC/DC buck switching regulator is an ideal power management solution for mobile applications, as it offers a wide range of features and functions as well as excellent performance. It\'s adjustable output voltage and current capabilities, synchronization and soft-start features, and wide range of operating modes make it a cost-effective option for most SMPS applications.

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