LT1507IN8#PBF

The LT1507IN8#PBF, from Linear Technology, is a Monolithic high voltage buck regulator, offering 3A of current and a wide input voltage range. It is designed for use in high frequency buck regulator applications, offering high efficiency and excellent power handling capability.

Application Field

The LT1507IN8#PBF is commonly used for applications such as cellular phones, PDAs, notebook computers, laptop computers, media players, and other communication or portable devices. It is optimized for use with high frequency switching regulators. The combination of the built-in oscillator, current limit, and output voltage adjustment features make this device great for applications where accuracy and efficiency must be maintained.

Working Principle

The LT1507IN8#PBF works by operating as a low noise, high frequency switching regulator. It consists of an internal oscillator, current limit, and output voltage adjustment features, making it possible to efficiently supply the required current. The LT1507IN8#PBF works by using a series of high frequency switching operations to maintain a constant output current and output voltage.

In normal operation, the LT1507IN8#PBF operates at a fixed frequency and duty cycle. The internal oscillator triggers the buck regulator to switch at a frequency of up to 2MHz. The duty cycle is set to provide a constant output current and output voltage. As the output voltage gradually rises or falls, the duty cycle is adjusted accordingly to maintain a constant output current.

The LT1507IN8#PBF also contains a number of protection features. These include over temperature protection, over current protection, and short circuit protection. These features provide protection against any potential damage to the switch regulator and the device it supplies current to. Additionally, the output voltage is monitored by an internal voltage monitor, to ensure that it remains within the safe operating range.