TH8061KDCA MELEXIS [Melexis Microelectronic Systems], TH8061KDCA Datasheet - Page 25

• Manufacturer Part Number: TH8061KDCA
• Description: Voltage Regulator with integrated LIN Transceiver
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

Tantalum Capacitors
This type of capacitor has a low dependence of the capacity and the ESR from the temperature and is
therefore well suitable as VCC load capacity.
Aluminum Capacitors
These capacitors show a strong influence of the capacity and the ESR from the temperature. These
characteristic restrains the usability as load capacity for the low drop regulator of TH8061.
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 25). This EMI-Filter makes sure that the RF imissions into the IC from the BUS line have no
affect resp. will be limited.
The value of the filter capacity can be adjusted to the size of the LIN network. 220pF should be used for
bigger networks. Values from 333pF up to 1nF should be used for middle to small LIN networks. Finally the
size of the filter capacity influences the effectiveness of the EMI suppressing in observation of the maximum
LIN bus capacity of 10nF.
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 capacity (10nF) and the compliance with the DC-
and AC LIN bus parameters.
TH8061 – Datasheet
3901008061
VBAT
BUS
LIN-
RC-Filter
rev.prot. diode
10
100µ
C
IN
Figure 25 - Application circuit (slave node)
100p
optional
100n
Voltage Regulator with integrated LIN Transceiver
or
220p
Page 25 of 36
LC-Filter
33uH
VSUP
EN
GND
BUS
TH8061
RESET
VCC
RxD
TxD
10µ...100µ
82p
C
L
100n
+5V
Control unit
with LIN protocol
TH8061
MCU
June 2004
Rev 007