LT3971IMSE-5#PBF

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LT3971IMSE-5#PBF is a high efficiency DC-DC switching regulator integrated circuit, which belongs to the PMIC (Power Management IC) and Voltage Regulator series. It is designed to provide a solution for all kinds of switching power supply applications, such as buck, boost, flyback, inverse buck and forward converters. LT3971IMSE-5#PBF supports the wide input voltage range from 9V to 35V and is able to efficiently manage all kinds of applications.

The device incorporates an integrated double high-side N-channel MOSFETs, which is capable of providing up to 7 A of continuous output current at up to 93 % of conversion efficiency. The integrated FRONT-END with Syncronous rectification enhances the switching performance and helps to reduce the output ripple. The low gate threshold of 1.5V also allows the device to work with a smaller gate drive voltage, thus minimizing switching power loss.

In addition to the protection functions, the IC also provides a Soft Start function to minimize the inrush current and reduce the stress of the start-up circuit. The device also has an integrated Undervoltage lockout (UVLO) feature that helps to prevent the output voltage from going below the specified level when the input voltage is too low. It also has an Over Temperature Protection (OTP) which protects against thermal runaway in the event of an over temperature condition.

The LT3971IMSE-5#PBF integrates a low-noise, high-efficiency PWM control circuitry that is capable of driving either single or dual phase converters. An adjustable frequency range from 200 kHz to 500 kHz is available for the PWM operation, and the CTRL pin can be used to change the output frequency via the proprietary LINK technology. It also includes synchronous rectification control pins as well as current sensing pins.

Furthermore, the device comes with an integrated logic-level comparator with adjustable hysteresis for constant output voltage regulation and supports dual-output topologies. The adjustable output voltage range and high-impedance gates make it suitable for various kinds of power supply applications.

The LT3971IMSE-5#PBF provides an integrated solution for a wide range of applications, including DC-DC modules, LED strips, portable devices and automotive applications. Its high efficiency and low noise operation make it an ideal choice for power supply applications in systems where saving energy and reducing noise is a priority.

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