TH8065KDCAA MELEXIS [Melexis Microelectronic Systems], TH8065KDCAA Datasheet - Page 29

• Manufacturer Part Number: TH8065KDCAA
• Description: Voltage Regulator with LIN Transceiver and Watchdog
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

Tantalum Capacitors
This type of capacitor has a low dependence of the capacitance and the ESR from the temperature and is
therefore well suited as VCC load capacitor.
Aluminium Capacitors
These capacitors show a strong influence of the capacitance and the ESR from the temperature. This
characteristic restrains the usability as load capacitor for the low drop regulator of TH8065.
4.3 Application Circuitry
4.4 EMI Supressing
To minimize the influence of EMI on the bus line a 220pF capacitor should be connected directly to the BUS
pin (see Figure 21). This EMI-Filter makes sure that the RF injections into the IC from the BUS line have no
affect resp. will be limited.
Alternatively to a pure C-filter it is also possible to use LC- or RC-filter. The dimension of C, L or R, L
depends on the corner frequency, the maximum LIN bus capacitance (10nF) and the compliance with the
DC- and AC LIN bus parameters.
TH8065 – Datasheet
3901008065
LIN-BUS
VBAT
100μ
C
IN
Figure 21 - Application circuit (slave node)
220p
100n
Voltage Regulator with LIN Transceiver and Watchdog
C
WD
Page 29 of 40
GND
VSUP
EN
GND
BUS
CWD
GND
TH8065
RESET
GND
GND
VCC
RxD
WDI
TxD
100n
10μ...100μ
TH8065
+5V
RST
MCU
May 2006
Rev 003