LTC3766IUFD#PBF

LTC3766 is a high efficiency, secondary-side synchronous forward controller. It is a PolyPhase-capable secondary-side controller for synchronous forward converters. When used in conjunction with the LTC3765 active-clamp forward controller and gate driver, the part creates a complete isolated power supply that combines the power of multiphase operation with the speed of secondary-side control. This device has been designed to simplify the design of active clamp forward converters. Working in concert with the LTC3765, the LTC3766 forms a robust, self-starting converter that eliminates the need for the separate bias regulator that is commonly used in secondary-side control applications. It is used in applications such as isolated 48V telecommunication systems, isolated battery chargers, automotive and military systems, industrial, avionics and heavy equipment etc.

• Direct Flux Limit™ guarantees no saturation
• Fast and accurate average current limit, clean start-up into pre-biased output
• Secondary-side control for fast transient response, simple, self-starting architecture
• Synchronous MOSFET reverse current limit, PolyPhase® operation eases high-power design
• True remote sense differential amplifier, remote sense reverse protection
• High voltage linear regulator controller, internal LDO powers gate drive from VOUT
• Overtemperature/overvoltage protection, regulated feedback voltage is 0.600V typical
• VCC operating voltage range from 5V to 10V, shutdown current is 210µA typical
• Supply current is 5mA typical at (VFS/SYNC = VCC = 7V, TA = 25°C)
• Operating temperature range from -40°C to 125°C, package style is 28-lead plastic QFN

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