LT8619EMSE-5#TRPBF

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The LT8619EMSE-5#TRPBF is a high current, high efficiency DC/DC step-down switching regulator. It has a wide input voltage range of 3.8V to 40V and is capable of operating in a variety of operating modes including pulse-width modulation (PWM) and forced PWM. The LT8619EMSE-5#TRPBF features a soft-start time-out circuit that optimizes start-up times; a 0.5% voltage accuracy over the output voltage range; and an adjustable switching frequency up to 2MHz. This IC is suitable for applications in telecommunications, industrial, automotive, and medical systems.

LT8619EMSE-5#TRPBF Application Field

The LT8619EMSE-5#TRPBF is a high-performance DC/DC switching regulator, which is capable of providing adjustable output voltage with high efficiency. It is suitable for use in a variety of applications, including:

• Telecommunications
• Industrial
• Automotive
• Medical Systems
• Power Management in portable devices

It can be used for a wide range of output currents, up to 30A, and is adjustable over an output voltage range of 1.2V to 25V, ensuring compatibility with a variety of applications.

LT8619EMSE-5#TRPBF Working Principle

The LT8619EMSE-5#TRPBF is a DC/DC step-down switching regulator IC, These devices use an internal switching transistor to convert an unregulated input voltage in the range of 3.8V to 40V to a regulated output voltage. The regulator measures the output voltage and compares it to a reference voltage. When the output voltage differs from the reference voltage, the regulator adjusts the current through the internal switching transistor to correct the output voltage.

The switching transistor completes multiple switching cycles in each clock cycle, allowing for changes in the average output voltage without changing the frequency of the switching. The switching frequency of the LT8619EMSE-5#TRPBF can be adjusted over a range of 400 kHz to 2 MHz, allowing optimization of output voltage ripple, EMI, and power density.

The LT8619EMSE-5#TRPBF also features a soft-start time-out circuit, which prevents the output voltage from over-noise and over-power during start-up. This ensures a smooth transition from low input voltage to full output voltage, and prevents voltage drop-outs during heavy load transients.

The LT8619EMSE-5#TRPBF also includes an adjustable current limit feature, which prevents overloading of the output during short circuit or overload conditions. The voltage accuracy of the LT8619EMSE-5#TRPBF is 0.5% over the entire output voltage range, which provides superior accuracy in the output voltage.

Conclusion

The LT8619EMSE-5#TRPBF is a high current, high efficiency DC/DC step-down switching regulator that is capable of operating in a variety of operating modes. It features a wide input voltage range of 3.8V to 40V, and an adjustable switching frequency up to 2MHz. The IC also offers 0.5% voltage accuracy over the entire output voltage range, making it suitable for use in a variety of applications including telecommunications, industrial, automotive, and medical systems.

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