APX803L05-43SA-7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	35 ms Minimum
Voltage - Threshold:	4.3V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23

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APX803L05-43SA-7 application field and working principle

APX803L05-43SA-7, a member of the PMIC – Supervisors family, is a versatile power management integrated circuit that is commonly used in a variety of applications. Its high-performance and flexibility offer potential users greater power savings and compact designs. It has a wide range of functions suitable for different application, including power sequencing, voltage monitoring, current measurement and temperature sensing.

Application and function

APX803L05-43SA-7 is ideal for deploying in a wide range of applications where any form of power management and control is needed, such as:

• Industrial automation control systems
• Automotive engine and fuel control systems
• Safety and security systems
• Consumer electronics
• Home energy management systems
• Power management for industrial and medical equipment
• Solar cell power plants

APX803L05-43SA-7 offers a total of 19 built-in regulators, which can provide up to four independent sequence power supply voltages. Furthermore, it includes an over-temperature protection that automatically shut down excessive temperature. Built-in undervoltage lockout (UVLO) and overvoltage shutdown (OVLO) protect the system from excessive voltages. It features low quiescent current and accurate step regulation, which provides greater efficiency when the system is in standby mode.

Working principle

APX803L05-43SA-7 integrated circuit utilizes a programmable, technique called pulse-width modulation (PWM) to control the output voltage. It is composed of two basic components: the output voltage reference and the error amplifier. The voltage reference is regulated by a resistor-capacitor combination and ensures that the output voltage is regulated within a specific range. The error amplifier monitors the output voltage and compares it to the reference voltage. If there is a discrepancy, the error amplifier will adjust the duty cycle of the PWM signal to the output driver transistor to change the output voltage so that it maintains the desired value.APX803L05-43SA-7 also includes built-in diagnostics such as over-voltage, under-voltage, over-temperature and power sequence failure, which helps to protect the system from damage. An integrated circuit reset generator is incorporated, which ensures the correct initialization of the integrated circuit upon power up.

Conclusion

APX803L05-43SA-7 is a cost-effective power management integrated circuit that is highly integrated and has a variety of features and functions. It offers high performance, flexibility and power savings to its users and is suitable for a wide range of applications. Its built-in diagnostics and reset generator help to protect the system from damage and ensure correct initialization upon power up. Its utilization of pulse-width modulation provides accurate and stable power regulation with great efficiency.

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