S-875039AUP-AADT2U

S-875039AUP-AADT2U Application Field and Working Principle

The S-875039AUP-AADT2U is a digitally programmable linear voltage regulator (LVR) used in portable and consumer electronics applications. The device is a combination of a 3A low-side MOSFET switch and three high-side PFET switches controlled by digital control signals. The voltage regulator operates in one of two modes: voltage regulation or overcurrent protection. When both functions are enabled, the device can intelligently sense and respond to overload conditions.

Applications

The S-875039AUP-AADT2U is suitable for a variety of applications, including smart phones and tablets, portable media players, digital cameras, and other portable electronics requiring enhanced power management. Additionally, the device can be used in AC-DC and DC-DC applications where overcurrent protection and load current monitoring are necessary.

Working Principle

The S-875039AUP-AADT2U voltage regulator employs a digitally controlled architecture to enable voltage regulation, overcurrent protection, and load current monitoring. The device includes three high-side PFET switches, a 3A low-side MOSFET switch, and a voltage regulation circuit. The digitally programmable features enable precise control of the output voltage, overcurrent protection, and load current monitoring.

The voltage regulation circuit senses the output voltage, then regulates the output voltage at the desired level by controlling the gate voltage of the low-side MOSFET switch. If an overload or short circuit occurs at the output, the overcurrent protection circuit will shut off the low-side MOSFET switch, thus protecting the system from damage. Additionally, the load current monitor circuit measures and monitors the load current, making it easy for system designers to monitor the load current and protect their systems against excessive load currents. The S-875039AUP-AADT2U also provides an adjustable dropout voltage that can be programmed to the desired level.

Conclusion

The S-875039AUP-AADT2U is a digitally programmable linear voltage regulator (LVR) suitable for a variety of applications such as smartphones, tablets, and other portable electronic devices. It operates in either voltage regulation or overcurrent protection modes, and offers precise control of the output voltage, overcurrent protection, and load current monitoring. The adjustable dropout voltage enables system designers to further fine-tune their systems for optimal results.