LP5551SQX

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The LP5551SQX is a specialized power management IC (PMIC) offering superior performance for demanding applications. It integrates digitally controlled power for a broad range of voltage, current and frequency requirements, enabling a high degree of design flexibility. The integrated feature set and cost-effective design support the use of programmable logic, microprocessor, analog and digital signal processing solutions in demanding applications from consumer and industrial to automotive and control.

In addition to power control, the LP5551SQX also provides onboard Sequencing and Configurability, allowing engineers to create into their designs complete “factory-status” configuration schemes. The onboard sequencing enables each application to be programmed and monitored, while the configurability allows a wide variety of features to be enabled or disabled. This aids in designing in safety and protection features.

LP5551SQX’s Working Principle:

The LP5551SQX is a highly integrated PMIC chip containing a variety of power control and sequencing features. It integrates multiple voltage regulators, a PWM controller, FET drivers, over-voltage/current protection and monitoring circuitry. Its primary functions are to control the supply voltage for the system, provide dynamic voltage scaling so that the core voltage can be adjusted according to the load request, and adjust the power-on order of system components.

The LP5551SQX’s primary power path is comprised of three buck regulators, one for each core voltage, and one for the SoC. Each regulator is capable of operating in a wide range of output voltages and supply levels, with the onboard voltage regulator capable of providing up to 2A of output current. Additionally, the onboard logic sequencing block provides the necessary timing information to ensure that components are powered on and off in the correct order.

Applications:

The LP5551SQX is well suited for use in applications such as digital home and entertainment devices, cell phones, smart phones, portable game systems, industrial automation, automotive and aircraft. It can be used to create large scale systems with multiple voltage rails, enabling the system to be customized to meet the specific needs of the application.

The LP5551SQX can also be used in applications that require additional safety features, as its fault protection and current and voltage monitoring systems can provide a high level of reliability. Additionally, the onboard configurability allows many applications to be configured for board trace optimization or design for manufacturing (DFM) as well as performance optimization, making the LP5551SQX a versatile and cost effective solution.

Conclusion:

The LP5551SQX is an ideal choice for a wide range of power control applications, with its many features and cost-effective design enabling engineers to maximize flexibility and reliability in their designs. Its many integrated functions provide power control, fault protection and sequencing, as well as configurability, allowing engineers to create optimized designs that meet the specific needs of their application. With its onboard voltage regulators, FET drivers, current and voltage monitoring and sequencer, the LP5551SQX is an excellent choice for a wide range of applications.

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