LTC3873ETS8-5#TRMPBF

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LTC3873ETS8-5#TRMPBF is an integrated high performance step-down switching controller that is typically used for power supply applications requiring up to 95% power efficiency and up to 5A of output current. This high-efficiency circuit is designed for a wide variety of switch mode power supply (SMPS) applications from low output voltages, up to 8V, with fixed and adjustable output voltages. The LTC3873ETSH-5#TRMPBF is ideal for systems such as mobile phones, computer displays, and notebook computers requiring high performance, efficient and low cost DC-DC converters.

Features of LTC3873ETS8-5#TRMPBF

The LTC3873ETS8-5#TRMPBF DC-DC switching controller IC is a high performance step-down switching regulator which enables the design of power supplies with high power efficiency. Some of the features include:

• Input voltage range from 3V to 28V
• Output voltage range from 0.6V to 8V
• Maximum output current of 5A
• Voltage feedback range of 0.6V to 16V
• Thermal shutdown, under voltage lockout and over voltage protection
• Programmable soft start and prebias start-up
• Electronic current limit
• Integrated adjustable loop compensation
• Internal Synchronous or asynchronous rectifier drive

Application Field of LTC3873ETS8-5#TRMPBF

The LTC3873ETS8-5#TRMPBF can be used in a variety of portable, automotive and computing products. it is typically used in applications such as mobile phones, computer displays, notebook computers and more. Other applications include portable instruments, automotive electronics and high performance ambient lighting systems. The controller can also be used in DSCs, operating systems and other microprocessors requiring reliable, high-efficiency power.

Working Principle of LTC3873ETS8-5#TRMPBF

The LTC3873ETS8-5#TRMPBF is a synchronous step-down switching controller designed for optimum efficiency, high performance and cost effective power supply solutions. The LTC3873ETS8-5#TRMPBF integrates both the control and the power stage to provide a solution with minimal board space requirements. The device includes all of the features required for a high performance synchronous buck converter, including a wide input voltage range and fast transient response. With its high switching frequency and tightly regulated output, the controller offers industry leading efficiency and performance.

The LTC3873ETS8-5#TRMPBF features high efficiency, low noise and a wide dynamic range. The output voltage is monitored via an adjustable resistor divider from 0.6V up to 16V. The device contains fully integrated gate drive and protection circuit functions. The low-side switch is controlled via an external MOSFET and the high-side switch is integrated in the device, and is adjustable for higher efficiency. The device also includes a programmable soft start, enable and prebias start-up, adjustable current limit and adjustable loop compensation.

Conclusion

The LTC3873ETS8-5#TRMPBF is an integrated step-down switching controller designed for a wide variety of switch mode power supply (SMPS) applications. The device features high performance and low cost, and enables designs with high power efficiency. The device includes all of the features necessary for power supply design, such as wide input voltage range, adjustable resistor divider, adjustable current limit, adjustable loop compensation, and integrated gate drive and protection.

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