LT3971EMSE-3.3#TRPBF

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The LT3971EMSE-3.3#TRPBF is a high-performance DC-DC switching regulator designed to deliver up to 2A of continuous load current over an adjustable output voltage range of 0.8V to 3.3V. It operates from a 4.5 V to 36V input supply and is capable of delivering up to a 25V output voltage. The LT3971EMSE-3.3#TRPBF provides a high frequency, quasi-transformer isolated, synchronous, DC-DC buck converter in a compact SOT-23-6 footprint. The device is designed to provide high efficiency and low noise operation over the entire performance spectrum.

This product can be used in a wide range of applications, including communications systems, networking systems, industrial instrumentation and tools, medical systems, automotive, military and aerospace applications. It is also an ideal device for powering low voltage logic and memory, LED lighting, and other high voltage system components.

The device features an on-chip, digitally programmable soft-start feature that allows the output Voltage to be accurately programmed over the range of 0.8V to 3.3V and protected against possible over-current conditions. The input voltage Range for this device is 4.5V to 36V, which can be applicable to a variety of power sources.

The LT3971EMSE-3.3#TRPBF’s switching frequency is programmable over a range of 200KHz to 1000KHz. An integrated logic-controlled shutdown mode reduces the quiescent current to 1uA. The device also features cycle-by-cycle current limiting and thermal shutdown protection.

The LT3971EMSE-3.3#TRPBF follows a basic synchronous buck converted topology, where the power MOSFET switch couples the input voltage to the output through an integrated transformer. The transformer is configured to act as a voltage multiplier, allowing the device to boost the output voltage three times above the input voltage. The output voltage can be programed via the control pin.

The switching frequency is controlled by an internal clock, and the output voltage can be programmed via the FB pin. The device also features cycle-by-cycle current limiting and thermal shutdown protection, allowing it to be safely operated in virtually any environmental condition. The device requires a minimum of external components, making it very easy to use in space-constrained applications.

The LT3971EMSE-3.3#TRPBF is highly efficient, which makes it ideal for portable, low power applications where heat is an issue. It is also exceptionally quiet, producing only minimal EMI noise. The device is RoHS compliant and is available in a 6-pin SOT-23 package.

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