LT3668HMSE#PBF Datasheet/PDFPMIC - Voltage Regulators - Linear + Switching
The LT3668HMSE#PBF is an integrated circuit that provides voltage regulation services in a wide variety of applications. This integrated circuit has been designed to perform switching and linear voltage regulation, giving designers a tool to customize power supply solutions to their specific needs. In this article, we will take a closer look at the application field and internal working principles of the LT3668HMSE#PBF integrated circuit.
Application
The LT3668HMSE#PBF is suitable for a wide range of applications, including but not limited to portable electronic devices, personal computer systems and laptop computers. It can also be used for many industrial and medical equipment and applications. Its wide input voltage range and advanced features make it ideal for achieving cost-effective power supply designs.
Primary Features
The primary features of the LT3668HMSE#PBF IC include:
- 90MHz Fixed Frequency Buck Operates High Efficiency Power Up to 1.5A.
- Switching Frequency Seamless Scalable to Up to 400kHz.
- Maximum Load Current of 1.5A.
- Input Voltage Range of 2V to 75V.
- Low Quiescent Current and Low Voltage Standby.
- Thermal and Current Limit Protection.
- Wide Output Voltage Range.
- Small Package and High Efficiency.
The LT3668HMSE#PBF is an ideal choice for providing cost-efficient and reliable power to a wide range of applications.
Working Principle
The LT3668HMSE#PBF is a switching regulator that allows buck and boost voltage regulation, allowing it to universally deliver the desired output voltage to a load or group of loads, regardless of the input voltage\'s actual value. The switching regulator consists of two main parts, the converter and the controller. All of the circuitry is incorporated in one package and minimal external components are required.
The converter is responsible for the actual voltage regulation. It works by controlling a switching transistor, thereby controlling power flow through an inductor. Depending on whether the input voltage is greater or less than the output voltage, the converter can make jump changes in either direction, allowing efficient buck or boost operation. The converter needs sufficient frequency and high power transfer characteristic to perform its tasks properly.
Thecontroller is responsible for providing the necessary feedback signals that keep the output voltage stable. It calculates the output voltage and compares it to the desired voltage setpoint. It then accurately adjusts the converter for proper voltage regulation. The controller also monitors the input voltage to adjust the switching frequency for higher efficiency.
The LT3668HMSE#PBF allows for seamless scalability through modern features such as adaptive on-time control, enabling it to have a wide operating frequency that is able to range from 90MHz to 400kHz. This allows the system to operate with higher efficiency on a wider range of input and output voltages.
Conclusion
The LT3668HMSE#PBF is an integrated circuit designed for switching and linear voltage regulation. It is suitable for a wide range of applications, such as portable electronics, personal computers, and industrial and medical equipment, due to its wide input voltage range and advanced features. It works by controlling a switching transistor to control power flow and using a feedback mechanism to monitor and adjust the output voltage. It also has advanced features such as adjustable frequency and adaptive on-time control that enable it to operate at higher efficiencies even on a wider range of input and output voltages.
The LT3668HMSE#PBF provides an efficient and reliable solution for power supply design, allowing designers to customize their power solutions as needed.