LT1307BCMS8#TRPBF

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Introduction to LT1307BCMS8#TRPBF DC DC Switching Regulators

The LT1307BCMS8#TRPBF is a family of DC-DC switching regulators from Linear Technology designed to provide adjustable voltage output between 0.6 V and 5.5 V and output current up to 1 A. The switching frequency can be programmed up to 1 MHz, and the LT1307BCMS8#TRPBF includes protection against short circuit, over temperature and overvoltage conditions. It is an ideal choice for a variety of demanding applications such as microprocessor core supply, DSP and other digital circuit power, portable and consumer products.

LT1307BCMS8#TRPBF DC DC Switching Regulator Application Fields and Working Principles

Industrial applications

The LT1307BCMS8#TRPBF is suitable for use in industrial applications such as microcontroller cores, power supplies, and servo motor controllers.

It is often used in applications that demand high efficiency, wide input voltage range, and low output voltage ripple, such as in battery-powered applications and in areas where line regulation is critical. Additionally, the output voltage can be adjusted to suit the power output requirements of the load.

Working principle

At the heart of the LT1307BCMS8#TRPBF are two DC/DC controller circuits designed to provide reliable and efficient operation. The primary controller is used to regulate the input voltage to the secondary circuit, while the secondary controller regulates the output voltage across a feedback loop. Both controllers are capable of switching frequencies up to 1 MHz, allowing for high efficiency and fast transient response.

The primary controller uses an external MOSFET, controlled current source, and oscillator to regulate the input voltage. This is done by modulating the output voltage of the MOSFET, creating an inductor/diode/capacitor (L/D/C) voltage regulator circuit.

The secondary controller also employs a current source, along with an external resistor divider, to set the output voltage. The output voltage is measured across the feedback loop and compared to the reference voltage. When the output voltage drops below the reference voltage, the secondary controller will increase the duty cycle on the MOSFET to increase the output voltage and vice versa.

In addition to regulating the input and output voltage, the LT1307BCMS8#TRPBF also features various protect features such as overvoltage and over temperature detection. The overvoltage protection circuit senses the output voltage and will turn off the regulator when the output exceeds the programmed thresholds. The over temperature protection circuit uses two thermal-sensing transistors to detect whether the regulator has exceeded the internal temperature threshold and will shut off the regulator accordingly.

Conclusion

The LT1307BCMS8#TRPBF is a family of DC-DC switching regulators from Linear Technology designed to provide adjustable voltage output between 0.6 V and 5.5 V and output current up to 1 A. It is well suited for applications such as microprocessor core supply, power supplies, servo motor controllers, portable consumer products, and battery-powered applications. The device includes protection against overvoltage, over temperature, and short circuit conditions and can switch frequencies up to 1 MHz.

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