TH8065

Voltage Regulator with LIN Transceiver and Watchdog

TH8065 – Datasheet

Page 3 of 40

3901008065

May 2006

Rev 003

List of Figures

Figure 1 - Block diagram.......................................................................................................................... 4

Figure 2 - Timing diagram for propagation delays................................................................................. 11

Figure 3 - Timing diagram for duty cycle acc. to LIN 2.0 and J2602..................................................... 11

Figure 4 - Timing Diagram for EN mode selection ................................................................................ 12

Figure 5 - State diagram of operating modes........................................................................................ 13

Figure 6 - Operating of power-on and under-voltage reset ................................................................... 15

Figure 7 - Receive mode impulse diagram............................................................................................ 17

Figure 8 - TxD input circuitry ................................................................................................................. 18

Figure 9 - RxD output circuitry............................................................................................................... 19

Figure 11 - Reset and Watchdog behaviour.......................................................................................... 21

Figure 12 - Reset behaviour .................................................................................................................. 22

Figure 13 - Output current of reset output vs. VCC voltage .................................................................. 22

Figure 14 - Watchdog timing ................................................................................................................. 23

Figure 15 - EN input circuitry ................................................................................................................. 24

Figure 16 - EN controlled via MCU........................................................................................................ 24

Figure 17 - Permanent normal mode..................................................................................................... 25

Figure 18 - Power dissipation LIN transceiver @ 20kbit ....................................................................... 26

Figure 19 - Save operating area............................................................................................................ 27

Figure 20 - ESR Curves for 6.8

Figure 21 - Application circuit (slave node) ........................................................................................... 29

Figure 22 – Example circuitry for connection of RxD to MCU for flash programming........................... 30