LTC3624HMSE-23.3#PBF

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LTC3624HMSE-23.3#PBF is a high-efficiency synchronous step down switching regulator, belonging to the field of PMIC (Power Management Intergrated Circuit). It provides constant frequency current mode control, delivering up to 5A of continuous output current, while supporting input voltage between 3V to 5.5V over an operating temperature range of -40° to 125°C. This device is versatile and has a wide range of applications, especially in the field of DC-DC Switching voltage regulator.

The structure of the LTC3624HMSE-23.3#PBF is a classical housed in an 8-lead narrow body SOIC package, with a built-in power MOSFET to operate from an input voltage starting from 3V up to 5.5V. This PBF device provides a configurable output power of up to 5A, with a total output voltage range of around 0.8V to 5.5V. It provides high efficiency, offering up to 95% efficiency in a very broad output current range.

The LTC3624HMSE-23.3#PBF device has the basic structure and working principle of a switching voltage regulator. It uses a high-performance switch mode power supply controller, which is designed to work as an oscillator with a constant frequency. When the device is turned on, the internal power MOSFET works as a switch by periodically opening and closing its circuit. When the power MOSFET is off, current continues to flow through the inductor, storing some energy into its magnetic field, and then releasing the energy when the MOSFET turns back on. This oscillation process is what provides the step-down voltage regulation.

To increase the efficiency of the switching regulator, a two-phase operation scheme is also employed. In this scheme, two MOSFETs are used, one for the high-side switch, and another for the low-side switch. This means that the two switches are connected in series, and operate alternately, providing a continuous output at a given frequency, eliminating the need to employ a bigger inductor. This two-phase operation can be programmed to operate in either parallel or interleaving mode.

In terms of protection features, the LTC3624HMSE-23.3#PBF device offers over-current protection, continuous short circuit protection, under-voltage lockout and a thermal overload protection. Moreover, its True Output Disconnect technology improves the power supply system\'s immunity to load short circuit and output overload conditions.

The LTC3624HMSE-23.3#PBF is part of a family of high-performance buck controllers offering a complete set of features and cost-effective solutions for DC-DC switching power modules. Ideal applications include battery-powered instrumentation, distributed power systems, cellular telephones, computer-peripheral components, and a wide range of other low-voltage, highcurrent systems.

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