Integrated Transformer Driver and LDO (Low Drop Out) Regulator

Maxim announced that it has simplified power and data isolation designs by integrating transformer drivers and Low Drop Out (LDO) regulators into its isolated RS-485 transceiver product family.

Maxim's highly integrated RS-485 transceiver family, the MAX14853, MAX14855, MAX14943, and MAX14949, is primarily used in industrial automation, programmable logic controllers (PLCs), HVAC systems, and power measurement applications, providing easy design, high efficiency, and robust communication for industrial automation equipment.

Maxim's RS-485 transceivers are available in full-duplex or half-duplex modes and provide robust communication at speeds up to 25 Mbps. They offer robust driver outputs and receiver inputs with isolation voltages of 2.75 kVrms and 5 kVrms and ESD ±35 kV (HBM). In particular, the MAX14943 RS-485/Profibus DP transceiver and the MAX14949 transceiver each boast an efficiency of up to 80% at a load of 150 mA.

Timothy Leung, Senior Business Manager at Maxim Integrated, said, “Maxim ESD transceivers, combined with Maxim’s robust digital isolation technology, are the industry’s most ruggedly isolated RS-485 solution.” “We integrated an LDO so that designers can benefit from strong isolation performance, a compact solution, and reduced system costs,” he said.

Susie Inoue, Research Director at Databeans, commented, “Maxim’s transceiver product family is the ideal solution for supporting the high efficiency and robust communication required when designing industrial automation equipment.”

The Maxim RS-485 transceiver family is available in a 16-pin Wide SOIC package (11mm x 11mm). It operates from -40°C to +105°C, and MAX148X2 and MAX149X2 evaluation boards are also available. Further information about the Maxim RS-485 transceiver family can be found on the Maxim website (http://bit.ly/RS-422_485_LineDrivers_Receivers).