LTC3703-5 Series

The LTC3703-5 is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 60V, making it ideal for telecom and automotive applications. The LTC3703-5 drives external logic level N-channel MOSFETs using a constant frequency (up to 600kHz), voltage mode architecture.A precise internal reference provides 1% DC accuracy. A high bandwidth error amplifier and patented* line feed forward compensation provide very fast line and load transient response. Strong 1Ω gate drivers allow the LTC3703-5 to drive multiple MOSFETs for higher current applications. The operating frequency is user programmable from 100kHz to 600kHz and can also be synchronized to an external clock for noise-sensitive applications. Current limit is programmable with an external resistor and utilizes the voltage drop across the synchronous MOSFET to eliminate the need for a current sense resistor. For applications requiring up to 100V operation, refer to the LTC3703 data sheet.LTC3703-5LTC3703Maximum VIN60V100VMOSFET Gate Drive4.5V to 15V9.3V to 15VVCC UV+3.7V8.7VVCC UV–3.1V6.2VApplications48V Telecom and Base Station Power SuppliesNetworking Equipment, ServersAutomotive and Industrial Control