LTC3261MPMSE#PBF Datasheet/PDFLTC3261MPMSE#PBF Application Field and Working Principle
The LTC3261MPMSE#PBF is a monolithic step down switching regulator module containing a regulating power converter, an integrated controller, power switches, input and output filter components, and various protection features, packaged in a low profile molded plastic module with mating power connector. This PMIC – Voltage Regulators – DC DC switching regulators is designed to be used in automotive, telecommunications, and other switching power supply circuits with a high efficiency, good noise performance, and excellent thermal stability.
Applications:
The LTC3261MPMSE#PBF is applicable in a variety of switching power supply systems as well as automotive, telecommunications and medical power supplies. Some of these applications include:
- Power supply regulation
- Battery chargers
- Automotive power systems
- Telecommunications power supplies
- Power over Ethernet (PoE) applications
- Medical power supplies
Components of the Module
The LTC3261MPMSE#PBF contains a number of components which make up the module. These include:
- Integrated Controller: the integrated controller is a dedicated mixed-signal and power management IC that provides integrated control, diagnosis, regulation, and protection functions.
- Power Switches: power switches are available in two forms: bipolar transistor (PNP), and MOSFET. The bipolar transistor provides better efficiency when driving small loads, while the MOSFET can drive larger loads efficiently.
- Input and Output Filters: these filters are designed to reduce the amount of noise and interference generated by the module, allowing for a cleaner power output.
- Protection Features: on-board protection features help to ensure the module is protected from over-voltage, over-current, and excessive temperature conditions.
Working Principle of the Module
The LTC3261MPMSE#PBF works according to the following principle:
The supplying voltage passes through the integrated controller and is connected to the power switches, which start switching ON and OFF depending on the output voltage and current requirements. The integrated controller continuously monitors the input and output voltages, and adjusts the switching frequency of the power switches in order to keep the output voltage and current in a constant regulated state.
The integrated controller also helps to prevent over-voltage and over-current conditions by automatically turning off the power switches if these limits are exceeded. Additionally, it contains a variety of protection features such as over-voltage shut down, over-current shut down, temperature shut down and EMI filter, which help to protect the module from damaging electrical conditions.
The output voltage and current of the module can be adjusted by changing the voltage, current and frequency of the power switches. Furthermore, the module can be configured to operate in either constant voltage or constant current mode.
Conclusion
The LTC3261MPMSE#PBF is a monolithic step down switching regulator module that is suitable for a variety of power supply applications. It provides excellent efficiency, good noise performance, and stability under varying conditions. The module is equipped with integrated controller, power switches, input and output filters, and various protection features, ensuring reliable and stable operation.