STLUX325A

Series:	--
Packaging:	Tray
Part Status:	Active
Applications:	Lighting
Current - Supply:	--
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Surface Mount
Package / Case:	32-VQFN Exposed Pad
Supplier Device Package:	32-VFQFPN (5x5)

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STLUX325A Application Field and Working Principle

STLUX 325A is a specialized power management integrated circuit (PMIC) manufactured by the STMicroelectronics Corporation. It is typically used in advanced safety-critical, equipment-resident applications such as machine control, robotics, medical equipment, and automotive systems. The STLUX 325A provides precision power regulation with high efficiency, which helps reduce the overall cost, size, and power consumption of the system.The STLUX 325A utilizes a combination of buck and boost topologies, along with a charge pump, to provide the necessary power regulation for complexity and potentially noisy power supplies. To ensure the lowest possible system noise, the STLUX 325A isolates upstream and downstream DC power supplies from each other via a high-performance, low-loss transformer. This transformer also helps isolate the device from transient overvoltages, further optimizing system reliability.The device can also be used to power and control regulated linear and switching supplies. By operating as a single-board power manager, the STLUX 325A can intelligently monitor and control multiple power supplies simultaneously. Additionally, the device is equipped with comprehensive protection features to ensure optimal system performance and protection.The STLUX 325A core consists of a three-phase buck converter, a four-Phase boost converter, and a charge pump. The three-Phase buck converter provides power into a connected power rail from an input supply of up to 4.2 V. The four-Phase boost converter operates independently of the buck converter and provides up to ten times the input voltage to a connected power rail. The boost converter is equipped with Phase Droop and Spread-Spectrum capabilities to reduce radiated emissions.The integrated charge pump enables the STLUX 325A to accept lower voltage inputs, such as a single-cell Li-polymer battery, and to supply higher output voltages, up to 25 V. The integrated charge pump also enhances system efficiency by providing a regulated output while dissipating less energy. By operating as a single-board manager, the STLUX 325A can monitor and control multiple power supplies simultaneously.Furthermore, the STLUX 325A contains a host of protection features to ensure safe and reliable power delivery and management. These include an internal 240–280 mA, adjustable current limit, an adjustable thermal regulation for the three-Phase and four-Phase converters, and a user-programmable overvoltage and undervoltage lockout. Additionally, the integrated power management also features short circuit protection, under-voltage lockouts, and a low dropout voltage feature for higher accuracy regulation.In summary, the STLUX 325A is a power management integrated circuit (PMIC) designed to provide precision power regulation with high efficiency in advanced safety-critical, equipment-resident applications. The device utilizes a combination of buck and boost topologies, along with a charge pump, to provide the necessary power regulation for complexity and potentially noisy power supplies. Additionally, built-in protection features provide robust operation, while comprehensive monitoring capabilities allow the device to intelligently monitor and control multiple power supplies simultaneously.

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