LT3669-2

FEATURES n IO-Link® PHY Compatible (COM1/COM2/COM3) n Cable Interface Protected to ±60V n Operation from 7.5V to 40V n Integrated Step-Down Switching Regulator n Max Load Current: 100mA (LT3669)/ 300mA (LT3669-2) n Synchronizable and Adjustable Switching Frequency: 250kHz to 2.2MHz n Output Voltage: 0.8V to 16V n Integrated 150mA LDO Linear Regulator n Rugged Line Drivers with Adjustable Slew Rate and Current Limit n Adaptive Line Driver Pulsing Scheme to Switch Heavy Loads Safely n Drivers Configurable as Push-Pull, Pull-Up or Pull-Down n Adjustable Power-On Reset Timer n Small 28-Pin Thermally Enhanced 4mm × 5mm QFN Package APPLICATIONS n Industrial Sensors and Actuators LT3669/LT3669-2 IO-Link Transceiver with Integrated Step-Down Regulator and LDO DESCRIPTION The LT®3669 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 up to 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 st...