The device offers cable interface protection to ±60V. Wake-up detect functionality as well as a programmable power-on reset timer are included for system reliability.
The LT3669 operates from a 7.5 to 40V input voltage range, making it suitable for industrial sensor applications. The device's internal switching regulator can deliver up to 100mA of load current, whereas the LT3669-2 delivers up to 300mA. Both versions can deliver high efficiency at output voltages from 0.8 to 16V.
The integrated LDO, powered from the switcher output, provides an additional output to offer more design flexibility while maintaining high efficiency. Both versions feature constant frequency/synchronisable operation with programmable switching frequencies between 250kHz and 2.2MHz.
The LT3669/-2 feature rugged line drivers with adjustable slew rates and current limit which are externally adjustable to optimise EMC performance. The line drivers can source/sink up to 250mA of current each or 500mA when connected together, with a minimal residual voltage of less than 2.1V.
An adaptive line driver pulsing scheme safely switches heavy loads. The drivers are easily configurable as push-pull, pull-up or pull-down to maximise system flexibility. Other features include current limit detection and thermal shutdown.
