LT3669EUFD-2#PBF

LT3669-2 is an industrial transceiver that includes a step-down switching regulator and a low dropout linear regulator. Wake-up detect functionality, as well as a programmable power-on reset timer are also included. The current limit and slew rate of the transmitters are externally adjustable for optimum EMC performance. The line drivers can source/sink upto 250mA of current each or 500mA when connected together, with a minimal residual voltage of less than 2.1V. An internal adaptive pulsing scheme allows the drivers to safely switch heavy capacitive loads and incandescent bulbs. Thermal shutdown provides additional protection. Line protection of ±60V in the line interface pins allows the use of standard TVS diodes with L+ operating voltages upto 40V. It is used in application such as industrial sensors and actuators etc.

• Supply operation is 7.5V to 40V
• Integrated step-down switching regulator
• Max load current is 300mA
• Output voltage range is 0.8V to 16V, adjustable power-on reset timer
• Switching frequency is 2.28NHz typ at (RT = 5.36K, TA = 25°C, VL+ = 24V)
• Integrated 150mA LDO linear regulator
• Rugged line drivers with adjustable slew rate and current limit
• Adaptive line driver pulsing scheme to switch heavy loads safely
• Drivers configurable as push-pull, pull-up or pull-down
• Operating temperature is -40°C to 125°C, package style is 28-lead plastic QFN

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