LTC3766HGN

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The LTC3766HGN is a multi-phase synchronous buck controller from Linear Technology. It is ideal for providing multiple voltage rails from a single input voltage in a variety of applications. It is a PMIC - Power Supply Controllers, Monitors - which consists of a serial port controller, charge pump, and other circuitry for controlling multiple synchronous buck regulators. It is designed for circuits that require high efficiency, low noise, and multiple output voltages.

The LTC3766HGN is a single-chip solution that features wide input voltage range, low quiescent current and low EMI operation. It supports up to three output voltage rails which can be adjusted independently for maximum flexibility. The device also supports user-defined output current-limit trip points for better system protection. The device also includes an integrated track-and-hold feature which guarantees constant output voltage even during sudden current changes.

The LTC3766HGN consists of three independent buck regulators, each having its own independent control loop and voltage feedback. The device also comes with a pulsed-width modulation (PWM) circuit that allows the user to set two output frequency parameters-PWM frequency and clock divider frequency. The PWM frequency determines the switching frequency of each regulator whereas the clock divider allows the user to program the switching frequency of each regulator differentially.

The input voltage range of the device is 4.5V to 17V. It can support a wide range of output voltages from 0.8V to 5V and maximum output current of 70A. It offers excellent power conversion efficiency, typically 92%. It also includes an internal analog PGOOD output signal for monitoring each regulator\'s output voltage.

The device also includes several advanced features such as the Active Ripple Cancellation (ARC) feature, which reduces the output ripple voltage. The device also includes a Soft-Start feature which allows a controlled start-up and prevents current surges for improved system stability.

The LTC3766HGN is suitable for providing multiple rails from a single input voltage for a range of applications such as servers, telecom equipment, power supplies, automotive systems and industrial controllers. The device is highly configurable and provides ample protection features to keep the system safe.

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