LT3782EFE

Series:	*
Part Status:	Obsolete

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The LT3782EFE is a synchronous step-down DC-DC controller with wide input voltage range, high efficiency and low total current consumption. It is designed to provide integrated power solution in various applications such as lighting, remote sensing, display, computing and communication for low voltage system power. Its integrated feature includes low dropout (LDO) current sensing, an over-current protection (OCP), thermal foldback and pulse-by-pulse current limiting.The LT3782EFE is well suited for use in a variety of DC-DC configurations from low voltage applications such as computing and communications to mid-range and high-voltage applications such as lighting and remote sensing. It is an integrated device that can be used for both synchronous buck and buck-boost configurations. It is easy to use and provides total current consumption that is very low relative to other devices.The LT3782EFE operates with a minimum voltage of 6V and its maximum voltage is 120V. It works across all voltage ranges by setting the power stage with its integrated PWM and current sharing functions. The PWM frequency can be set to up to 500 kHz and this allows for efficient power conversion in high power applications.The LT3782EFE also provides an over-current protection (OCP) and thermal foldback functions which improve the system reliability. In the event of an over-current situation or an over-temperature situation, the device will immediately shut down and restart when conditions become acceptable.The LT3782EFE operates by using a single PNP power transistor with integrated current sensing. This allows for high voltage and low voltage operation. In normal operation, the current component of the transistor is scaled, and the voltage component is adjusted to compensate for the current component. The transit time of the PNP power transistor is also very fast, which allows for fast switching performance and high efficiency.The LT3782EFE has many features to ensure the system stability such as low dropout (LDO) current sensing, an over-current protection (OCP) and thermal foldback. The current sensing allows the device to efficiently sense the current load of the system and adjust the output voltage accordingly. The OCP prevents the LT3782EFE from reaching its current limit, while the thermal foldback functions reduce the output voltage during thermal events to prevent any further heating of the device.In addition to its built-in features, the LT3782EFE also has several customizable options. Users can configure the output voltage, the current limit, the duty cycle, and the softstart. This gives users flexibility in configuring their system to the best performance.The LT3782EFE is an excellent fit for a variety of applications from low voltage computing to high voltage lighting. Its integrated features and customizable options ensure a reliable and efficient DC-DC conversion for a wide variety of applications. ```html

Overview

The LT3782EFE is a synchronous step-down DC-DC controller with wide input voltage range, high efficiency and low total current consumption. It is designed to provide integrated power solution in various applications such as lighting, remote sensing, display, computing and communication for low voltage system power. Its integrated feature includes low dropout (LDO) current sensing, an over-current protection (OCP), thermal foldback and pulse-by-pulse current limiting.

Key Features and Benefits

• Operates with a minimum voltage of 6V and maximum voltage is 120V
• Integrated PWM and current sharing functions
• PWM frequency up to 500 kHz
• Over-current protection (OCP)
• Thermal foldback for system protection
• Low dropout (LDO) current sensing
• Configurable Output Voltage, Current Limit, Duty Cycle and Softstart

Applications

The LT3782EFE is well suited for use in a variety of DC-DC configurations from low voltage applications such as computing and communications to mid-range and high-voltage applications such as lighting and remote sensing.

Working Principle

The LT3782EFE operates by using a single PNP power transistor with integrated current sensing. This allows for high voltage and low voltage operation. In normal operation, the current component of the transistor is scaled, and the voltage component is adjusted to compensate for the current component. The transit time of the PNP power transistor is also very fast, which allows for fast switching performance and high efficiency.

Conclusion

The LT3782EFE is an excellent fit for a variety of applications from low voltage computing to high voltage lighting. Its integrated features and customizable options ensure a reliable and efficient DC-DC conversion for a wide variety of applications.

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