LTC3766MPUFD#TRPBF

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The LTC3766MPUFD#TRPBF is a configurable, monolithic, high-efficiency, synchronous DC/DC switching regulator controller with excellent transient response. It powers DC/DC converters in a variety of configurable modes including single-ended primary inductance conversion (SEPIC) and general-purpose buck converter. It is suitable for a wide range of applications, including automotive, communications, consumer, computing, industrial and medical devices.The LTC3766MPUFD#TRPBF is the perfect choice for both high-side and low-side controller of simple to complex power supplies. It integrates an operating frequency range of up to 700khz, allowing it to handle high-frequency switching operations with excellent transient load response and superior EMI.The device features high-performance power management with advanced features including Built-in Synchronous rectification control (SMR-Lite), integrated clock generator with user-programmable frequency, flexible voltage margining, and programmable under-voltage lockout (UVLO) modes to ensure always-on power supply operation.The device also has a low-voltage operation and a low quiescent current (<160µA@VIN>5V), making it ideal for battery-powered applications.In terms of operating principles, the LTC3766MPUFD#TRPBF uses a pulse-width-modulated (PWM) control scheme to convert incoming AC power into DC. This is done with the use of an inductor, a diode bridge, and some switching elements. The switching elements are provided by the internal comparator within the device. By driving the comparator, it quickly switches the gate signals to the switching elements and skips the pauses for ‘off’ cycles of_ the output waveform, allowing the inductor to go into reset mode and allowing the input power to flow to the output.The PWM signal generated is responsible for driving the DC-DC converter, and this signal is regulated by the internal control loop within the device. The control loop adjusts the PWM signal according to the feedback voltage at the output and makes sure the power is regulated and provided at the desired output voltage. This is done by sensing the output voltage and the feedback voltage, and the error amplifier adjusts the duty cycle to keep the two voltages equal and hence regulates the output voltage.Overall, the LTC3766MPUFD#TRPBF is a great example of an advanced power supply controller, with excellent performance for a wide variety of applications. It can operate at high frequency with excellent transient response and superior EMI, and at the same time, it offers low quiescent current options for battery-powered applications.

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