TH8065 Datasheet, PDF (3/40 Pages) Melexis Microelectronic Systems – Voltage Regulator with LIN Transceiver and Watchdog

TH8065
Voltage Regulator with LIN Transceiver and Watchdog
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 10 - Characteristic of current limitation VCC = f (I_VCC) ............................................................... 20
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 6.8μF ≤ C_L ≤ 100μF and Frequency of 100 kHz ....................................... 28
Figure 21 - Application circuit (slave node) ........................................................................................... 29
Figure 22 – Example circuitry for connection of RxD to MCU for flash programming........................... 30
TH8065 – Datasheet
3901008065
Page 3 of 40
May 2006
Rev 003