TLE6286 Datasheet, PDF (6/19 Pages) Infineon Technologies AG – LIN-Transceiver LDO

Target Data TLE 6286
2
Circuit Description
The TLE 6286 is a single-wire transceiver combined with a LDO. It is a chip by chip
integrated circuit in a P-DSO-16-4 package. It works as an interface between the
protocol controller and the physical bus. The TLE 6286 is especially suitable to drive the
bus line in LIN systems in automotive and industrial applications. Further it can be used
in standard ISO9141 systems. The on-chip voltage regulator with watchdog is designed
for sleep mode applications but it is also possible to use an external voltage regulator.
Start Up
Power Up
Normal Mode
ENLIN INHO V_CC
high high ON
ENLIN low
ENLIN high
(V_CC
ON)
ENLIN high
Stand-By
ENLIN INHO RxD V_CC
low high ^low1) ON
high³⁾
Sleep Mode
ENLIN INHO V_CC
low floating OFF²⁾
Wake Up
t > t_WAKE
Figure 3
1) _{after wake-up via bus}
2) _{ON when INHO not connected to INHI}
3) _{after start up}
Operation Mode State Diagram
2.1 Operation Modes
In order to reduce the current consumption the TLE 6286 offers a sleep operation mode.
This mode is selected by switching the enable input EN low (see figure 3, state
diagram). In the sleep mode a voltage regulator can be controlled via the INH output in
order to minimize the current consumption of the whole application. A wake-up caused
by a message on the communication bus automatically enables the voltage regulator by
switching the INH output high. In parallel the wake-up is indicated by setting the RxD
output low. When entering the normal mode this wake-up flag is reset and the RxD
output is released to transmit the bus data.
Version 1.02
6
2001-10-15