TH8062 Datasheet, PDF (27/38 Pages) Melexis Microelectronic Systems – Voltage Regulator with LIN Transceiver

TH8062
Voltage Regulator with LIN Transceiver
Tantalum Capacitors
This type of capacitor has a low dependence of the capacitance and the ESR from the temperature and is
therefore well suitable as VCC load capacitor.
Aluminium Capacitors
These capacitors show a strong influence of the capacitance and the ESR from the temperature. These
characteristic restrains the usability as load capacitor for the low drop regulator of TH8062.
4.3 Application Circuitry
V_BAT
LIN
C_IN
10
180p
Optional
ESD
Protection
TH8062
C_load
VSUP
EN
GND
BUS
VCC
RESET
TxD
RxD
Figure 19 - Application circuit (slave node)
MCU
+5V
4.4 EMI Supressing
To minimize the influence of EMI on the bus line a 180pF capacitor should be connected directly to the BUS
pin (see Figure 19). This EMI-Filter makes sure that the RF injection 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.
TH8062 – Datasheet
3901008062
Page 27 of 38
March 2006
Rev 002