LT1737IS#PBF

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LT1737IS#PBF is an integrated switching controller for DC-DC power supply applications, designed to rapidly and easily turn on and off power components such as MOSFETs, IGBTs, and other voltage regulators. This versatile and reliable device is comprised of an overvoltage protection circuit, an adjustable current-limit circuit, and a logic interface, allowing it to effectively manage the input/output of power within a system.

With additional features such as precision output voltage limits, a built-in thermal shutdown protection circuit, and a soft-start control pin, the LT1737IS#PBF provides high levels of accuracy and protection for a wide variety of DC-DC switching applications.

Typical Applications

The versatile LT1737IS#PBF switching controller can be applied in numerous DC-DC power supply applications. Some of the most common applications include:

• Switch-mode power supplies
• Constant-voltage and constant-current sources
• Battery chargers
• Switched capacitor and inductor circuits

Working Principle

The LT1737IS#PBF switching controller works by rapidly turning on and off power components such as MOSFETs, IGBTs, and voltage regulators at a preset frequency rate. This switched frequency rate is controlled by the built-in oscillator, which can be adjusted by means of the Oscillator Frequency Adjust Control Pin.

Once the oscillator is set, the LT1737IS#PBF switching controller takes over and controls the input/output of power within the system. The output voltage is monitored via the feedback pin, and the controller can turn off the power components if the voltage rises above the preset limit. In addition, it features automatic hiccup mode protection, which trips an alarm if programmed current limits are exceeded.

The LT1737IS#PBF also includes a built-in thermal shutdown protection circuit to prevent overheating of the device. This works by activating an alarm if the die temperature exceeds the preset limit, and also by limiting the power output until the temperature has returned to normal.

Conclusion

The LT1737IS#PBF is an extremely versatile and reliable switching controller for DC-DC power supply applications. It is composed of an overvoltage protection circuit, a current-limit circuit, and a logic interface for maximum efficiency and accuracy. In addition, it features precision output voltage limits, a built-in thermal shutdown protection circuit, and a soft-start control pin for added protection and accuracy. With its wide range of features, the LT1737IS#PBF is an excellent choice for a wide variety of DC-DC switching applications.

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