LTC3879IUD#TRPBF

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PMIC (Power Management Integrated Circuits) Voltage Regulators are the solutions used in managing power. They maintain the voltage and current supplied to a given load and device, like a processor or a system. In doing so, they also ensure that the power is available whenever and wherever it’s needed. DC DC Switching Controllers are the solutions for designing advanced Micro-Power Systems wherein applications like boosted output and stretched runtime are desired. LTC3879IUD#TRPBF is one of the most popular of these controllers now, with its wide-ranged input voltage and high efficiency at 18V.

LTC3879IUD#TRPBF Application Fields

LTC3879IUD#TRPBF is a highly efficient, wide input voltage range DC/DC switching converter with a fixed 4.5V output voltage. It helps to maintain the efficient power supply over a wide range of input voltages and load conditions. This makes it a great solution for applications such as:

• Batteries-charging applications
• Distributed power systems
• Industrial, automotive and other regulated power systems
• Load-sensing or self-powered systems
• PCI Express or other interface cards
• Programmable power supply (PPS).

LTC3879IUD#TRPBF Working Principle

LTC3879IUD#TRPBF is built on the basis that the output voltage needs to be regulated at a fixed value during varying load demands, input voltage and temperature. Its internal circuitry continuously samples and controls the input voltage to ensure that the output voltage remains stable and constant. This ensures that the device always provides an adequate voltage for the operation of other circuits.

The working principle of LTC3879IUD#TRPBF involves four main stages – pulse-width modulation (PWM), sensing stage, regulation stage, and voltage conversion. In the PWM stage, the chip uses an adjustable clock frequency and duty cycle to adjust switching frequencies. This also helps to regulate and reduce the power losses associated with the changing of frequencies. In the sensing stage, the internal voltage comparator continuously samples and compares the input voltage and output voltage to ensure that both of them remain at the desired level. In the regulation stage, the chip uses feedback control mechanism to adjust the clock frequency, duty cycle, and pulse width. Finally, in the voltage conversion stage, the chip uses a series of switches to redistribute voltage from one side to the other, thereby regulating the output voltage.

Conclusion

The LTC3879IUD#TRPBF is a highly efficient and reliable DC DC switching controller that is specifically designed for wide input voltage range application with a fixed 4.5V output voltage. It is of great help in diverse applications such as batteries-charging, distributed power systems and load-sensing systems. It can be easily incorporated in various power-supply designs due to its innovative working principle involving four different stages: pulse-width modulation, sensing, regulation and voltage conversion.

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