LIN transceivers meet requirements of vehicle OEMs
NXP Semiconductors
TJA1028 LIN transceivers
The TJA1028, a LIN transceiver range with an integrated low-drop voltage regulator in a 3 x 3mm leadless package, has been designed to meet the stringent requirements of vehicle OEMs.
The voltage regulator is designed to power an automotive Electronic Control Unit (ECU), integrating the major peripheral functions around the microcontroller of a typical LIN-networked ECU into a single chip.
The combination of voltage regulator and bus transceiver makes it possible to develop compact yet powerful slave nodes in LIN bus systems.
The TJA1028 is able to handle low-speed data communication in vehicles and is suitable for various LIN slave applications such as rain-light sensors, mirror modules, window lifters and switch panels.
The TJA1028 offers strong electrostatic discharge (ESD) and electromagnetic compatibility (EMC) performance with bus output designed to withstand high voltages, enabling robust automotive designs.
The TJA1028 system basis chip (SBC) range can deliver up to 70mA and is available in 3.3 and 5V variants.
In order to minimise current consumption, the TJA1028 supports a sleep mode in which the LIN transceiver and the voltage regulator are switched off while still having wake-up capability via the LIN bus.
The TJA1028 also offers a low-power standby mode, in which the LIN transceiver is switched off while the voltage regulator is still supplying the microcontroller.
To enable smaller, lighter and more environmentally friendly LIN2.1 modules, the TJA1028 transceiver is available in a leadless HVSON8 package that measures 3 x 3mm.
Compared with an SO8 package, the HVSON8 reduces board space by up to 70 per cent and enables smaller ECU sizes.
The HVSON8 package is said to feature better thermal characteristics and improved heat dissipation compared with standard solutions, allowing the voltage regulator to deliver up to 70mA , which is 40 per cent higher than the current industry standard.
The TJA1028T/xxx/20 ensures secure data communication up to 20kBaud, the maximum specified in the LIN standard.
The TJA1028T/xxx/10 versions are optimised for a transmission speed of 10.4kBaud, as specified in SAE J2602.
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