PMIC: Voltage Regulators - DC DC Switching Regulators

The PAM2305DGFADJ is part of DC/DC switching voltage regulator consisting of PAM2305DGF amplifier, MOS FET, bias circuitry and additional components. It is designed to provide efficient direct current transfer between the input sources and output power loads while providing full protection against overload, short circuit and thermal resistance. The PAM2305DGFADJ is a popular choice for efficient and reliable power transfer due to its low quiescent current and wide input voltage range. It features high volts per amp output current capacity and programmable voltage regulation.

Features

• High efficiency - up to 94%
• Wide input voltage range of 6V to 36V
• Low quiescent current
• Built-in over-current protection
• Over-temperature protection
• Full power protection
• Output current limit protection

Applications

The PAM2305DGFADJ is suitable for a wide range of applications requiring precise and reliable power transfer. It is used in automotive, medical, industrial and consumer applications to provide precise voltage regulation for load segments. It can be used for general-purpose reset circuits, microcontroller power supply, laptop power, automotive systems and lithium-ion battery packs.

Working Principle

The PAM2305DGFADJ works on a multiple step-down conversion principle. It takes an input voltage and uses two cascaded MOSFETs to step down the input voltage to the required output voltage. The first MOSFET acts as a synchronous rectifier, while the second MOSFET is an N-channel MOSFET that acts as a buffer, ensuring a constant current input to the regulating stage. The regulating stage consists of a voltage feedback loop composed of a resistive network, a current sensing network and an optocoupler. The output voltage is monitored and adjusted, as necessary, to maintain a constant level. The PAM2305DGFADJ regulator also contains protection functions such as power-on reset and over-temperature shut down.

Conclusion

The PAM2305DGFADJ switching voltage regulator is a reliable and efficient solution for power transfer between the input and output sources. Its wide input voltage range and cost-effectiveness make it an ideal choice for a variety of applications requiring precise voltage regulation. Its over-current, over-temperature and full power protection functions make it a safe and reliable power source for microcontrollers, automotive systems, medical equipment and other applications requiring efficient and reliable power transfer.