APX803L05-29W-7 Integrated Circuits (ICs)

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Power Management Integrated Circuit (PMIC) supervisors are a type of integrated circuit that performs a set of predetermined functions to ensure the supply of clean, efficient and safe power. PMIC supervisors are commonly used in electronic applications to maintain voltage levels, detect working environment temperatures and protect circuits from overvoltage and current faults. The APX803L05-29W-7 is one of the many PMIC supervisors developed to provide efficient power supply to electronic devices.

Application Field

The APX803L05-29W-7 is an ultra-low quiescent current monitoring & supervisor IC designed to provide power supply and well power management to battery powered portable applications. It features both micro-power consumption (< 20 nA) and low shutdown current (< 1 A) which is suitable for secondary side chip designs of Li-ion/Li polymer battery applications.

The APX803L05-29W-7 is designed as an easy-to-use and cost-effective solution for battery-powered portable systems. It is an ideal choice for applications such as mobile phones, portable media players, and digital still cameras, with superior reliability and performance. This regulator enables overvoltage protection (OVP) and overcurrent protection (OCP) for better system safety.

Working Principle

The APX803L05-29W-7 incorporates features such as adjustable input voltage range and an integrated buck converter. The input voltage range of the APX803L05-29W-7 is adjustable from 5 V to 29 V and allows it to be used in a variety of applications. The APX803L05-29W-7 includes an integrated buck converter which provides a fixed output voltage from 2.625V to 3.9 V at a maximum current of up to 50 mA. The APX803L05-29W-7 can be used as a standalone buck regulator or it can be combined with an external power MOSFET for higher current applications.

The overvoltage protection (OVP) circuit in the APX803L05-29W-7 monitors the input voltage and provides controlled shutdown of the regulator whenever the voltage rises above a preset value. The overcurrent protection (OCP) in the APX803L05-29W-7 is designed to protect the system from short-circuits and other current faults. The OCP circuit limits the current depending on the voltage at the FB pin. It is capable of limiting the current to a safe level when an external fault is encountered.

The APX803L05-29W-7 also provides a variety of features such as protection against reverse-current, negative supply protection, EMC level-3 compliance, thermal shutdown, and low battery voltage monitor. The thermal shutdown circuit monitors the temperature of the regulator and shuts down the regulator when the temperature exceeds a preset value. This ensures the safety of the system from overheating. In addition, the APX803L05-29W-7 includes an integrated low battery voltage monitor which can detect when the battery voltage is too low.

Conclusion

The APX803L05-29W-7 is a highly integrated and cost-effective PMIC supervisor, designed for portable systems. It provides a range of features such as adjustable input voltage range, low-battery voltage monitor, and integrated buck converter, which are all essential for providing a reliable and safe power supply to portable systems. The APX803L05-29W-7 is designed to provide overvoltage protection (OVP) and overcurrent protection (OCP). This ensures the safety and stability of the system by eliminating the possibility of damaged components and catastrophic failure due to overvoltage and current faults.

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