LT1940LEFE#TRPBF

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The LT1940LEFE#TRPBF is a buck switching regulator for DC to DC voltage conversion. It supports a wide input voltage range from 3V to 40V, and a single output voltage from 0.8V to 36V with an adjustable switching frequency up to 600 kHz. This switching regulator uses efficient current mode control to reduce noise and minimize external component count. It also offers excellent transient response and fast line/load regulation. The LT1940LEFE#TRPBF offers many options for protection features, including undervoltage lockout, cycle-by-cycle current limiting, temperature sensing, and foldback current limiting.

As a DC to DC switching regulator, the LT1940LEFE#TRPBF is ideal for cases where power is needed from a DC source, such as solar cells or batteries, to be transformed into a DC output voltage of low wattage. This makes it suitable for a wide range of applications such as automotive, industrial, telecom, medical and consumer. The flexibility of the device makes it suitable for isolated or non-isolated implementations, as well as power management applications.

The LT1940LEFE#TRPBF utilizes a sophisticated control loop that provides fast transient response, an internal oscillator, and a voltage mode of operation with a switch node monitor to provide accurate current control. The included cycle-by-cycle current limiting, over temperature shutdown, and output voltage foldback protect the device and the attached equipment. The device can be synchronised to an external clock signal for improved efficiency and noise reduction.

The LT1940LEFE#TRPBF also incorporates an enabling pin with a logic-level enable and a high-impedance enable to control the working status of the device. The integrated under-voltage lockout (UVLO) keeps the device in a safe power-saving mode at lower input voltages by disabling the internal power MOSFET. The LT1940LEFE#TRPBF is available in the standard 16-lead thermally enhanced thin TSOT-23 and 16-lead thermally enhanced SO packages.

In summary, the LT1940LEFE#TRPBF is a highly efficient buck switching regulator suitable for a range of applications. Its low power consumption, fast transient response, and extensive protective features make it an ideal choice for a variety of DC to DC conversion applications. Additionally, its wide input voltage range and adjustable switching frequency give designers the flexibility to build a variety of power supplies for various applications.

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