Four output configuration output 5V LM2641 3A 3.3V 4A 12V 0.3A and 5V 0.025A

The circuit consists of the LM2641, which provides four output voltages: 5V at 3A, 3.3V at 4A, 12V at 0.3A, and 5V at 0.025A. The LM2641 is a dual adjustable step-down switching power supply controller with an input voltage range of 5.5 to 30V. It features dual output adjustable voltage levels from 2.2V to 8V and operates at a frequency of 300kHz, with a load regulation error of 0.5%. Additionally, the circuit includes soft start functionality along with undervoltage and overvoltage protection mechanisms.

The LM2641 is designed for efficient voltage regulation in applications requiring multiple output levels. Its capability to provide four distinct output voltages makes it suitable for powering various electronic devices and circuits. The adjustable output range allows for flexibility in design, accommodating different voltage requirements.

The input voltage range of 5.5V to 30V ensures compatibility with a wide range of power sources, while the dual output adjustable feature enables users to set specific voltage levels between 2.2V and 8V according to the needs of the load. Operating at a frequency of 300kHz helps to minimize the size of external components, such as inductors and capacitors, which can lead to a more compact design.

Load regulation error of 0.5% indicates the stability of the output voltage under varying load conditions, ensuring that connected devices receive a consistent voltage supply. The soft start feature prevents inrush current during startup, protecting both the power supply and the load from potential damage.

Furthermore, the undervoltage and overvoltage protection features are critical for safeguarding the circuit against voltage fluctuations that could harm sensitive components. These protections contribute to the reliability and longevity of the power supply system.

Overall, the LM2641 four-output power supply circuit is a robust solution for applications that require adjustable and reliable voltage outputs, making it a preferred choice in various electronic designs.Constituted by the LM2641 output 5V/3A, 3.3V/4A, 12V/0.3A and 5V/0.025A four-output power supply circuit as shown in FIG. LM2641 is a dual adjustable step-down switching power supply controller, the input voltage range of 5.5 ~ 30V, 2.2 ~ 8V dual output adjustable operating frequency of 300kHz, load regulation error of 0.5%. It can be soft start, undervoltage and overvoltage protection.