1. General description
The TJA1028 is a LIN 2.0/2.1/SAE J2602 transceiver with an integrated low-drop voltage
regulator. The voltage regulator can deliver up to 70 mA and is available in 3.3 V and
5.0 V variants. TJA1028 facilitates the development of compact nodes in Local
Interconnect Network (LIN) bus systems. To support robust designs, the TJA1028 offers
strong ElectroStatic Discharge (ESD) performance and can withstand high voltages on the
LIN bus. In order to minimize current consumption, the TJA1028 supports a Sleep mode
in which the LIN transceiver and the voltage regulator are powered down while still having
wake-up capability via the LIN bus.
The TJA1028 comes in an SO8 package, and also in a 3 mm 3 mm HVSON8 package
that reduces the required board space by over 70 %. This feature can prove extremely
valuable when board space is limited.
2. Features and benefits
LIN 2.0/2.1/2.2 compliant
SAE J2602 compliant
Downward compatible with LIN 1.3
Internal LIN slave termination resistor
Voltage regulator offering 5 V or 3.3 V, 70 mA capability
2 % voltage regulator accuracy over specified temperature and supply ranges
Voltage regulator output undervoltage detection with reset output
Voltage regulator is short-circuit proof to ground
Voltage regulator stable with ceramic, tantalum and aluminum electrolyte capacitors
Robust ESD performance; 8 kV according to IEC61000-4-2 for pins LIN and V
BAT
Pins LIN and V
BAT
protected against transients in the automotive environment
(ISO 7637)
Very low LIN bus leakage current of < 2 A when battery not connected
LIN pin short-circuit proof to battery and ground
Transmit data (TXD) dominant time-out function
Thermally protected
Very low ElectroMagnetic Emission (EME)
High ElectroMagnetic Immunity (EMI)
Typical Standby mode current of 45 A
Typical Sleep mode current of 12 A
LIN bus wake-up function
K-line compatible
Available in SO8 and HVSON8 packages
TJA1028
LIN transceiver with integrated voltage regulator
Rev. 4 — 25 July 2012 Product data sheet
