The TLIN1028-Q1 is a local interconnect network (LIN) physical layer transceiver, compliant to LIN 2.2A ISO/DIS 17987–4 standards, with an integrated low dropout (LDO) voltage regulator.
This LIN system basis chip (SBC) reduces system complexity by providing a 3.3 V or 5 V rail with up to 70 mA (D) or 125 mA (DRB and DDA) of current to power microprocessors, sensors or other devices. The TLIN1028-Q1 has an optimized current-limited wave-shaping driver which reduces electromagnetic emissions (EME). The TLIN1028-Q1 converts the LIN protocol data stream on the TXD input into a LIN bus signal. The receiver converts the data stream to logic-level signals that are sent to the microprocessor through the open-drain RXD pin.
| PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
|---|---|---|
| TLIN1028D-Q1 | SOIC (8) | 4.90 mm x 3.91 mm |
| TLIN1028DDA-Q1 | HSOIC (8) | 4.90 mm x 3.91 mm |
| TLIN1028DRB-Q1 | VSON (8) | 3.00 mm x 3.00 mm |
Changes from Revision A (July 2020) to Revision B (June 2022)
Ultra-low current consumption is possible using the sleep mode which allows wake up via LIN bus or EN pin. The LIN bus has two states: dominant state (voltage near ground) and recessive state (voltage near battery). In the recessive state, the LIN bus is pulled high by the internal pull-up resistor (45 kΩ) and a series diode. No external pull-up components are required for responder node applications. Commander node applications require an external pull-up resistor (1 kΩ) plus a series diode per the LIN specification
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | VSUP | HV Supply In | Device supply voltage (connected to battery in series with external reverse-blocking diode) |
| 2 | EN | D I | Enable input |
| 3 | GND | GND | Ground (2)(3) |
| 4 | LIN | HV I/O | LIN bus single-wire transmitter and receiver |
| 5 | RXD | D O | RXD output (open-drain) interface reporting state of LIN bus voltage |
| 6 | TXD | D I | TXD input interface to control state of LIN output |
| 7 | nRST | D O | Reset output (active low) |
| 8 | VCC | Supply Out | Output voltage from integrated LDO |