TH8060JDF データシートの表示（PDF） - Melexis Microelectronic Systems
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TH8060JDF Datasheet PDF : 16 Pages
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TH8060
LIN Bus Transceiver with integrated Voltage Regulator
RESET Output
The RESET output is switched from low to high if VSUP is
switched on and VCC>VRESEIN after the time tRES.
If the voltage VCC drop below VRES1 or VRES2 then the RESET
output is switched from high to low after the time trr has been
reached.
The voltage level for VRES1 and VRES2 or the correspond-
ing times tRES can be programmed via the analogue input
VTR.
Wake up with BUS traffic
If the regulator is put in standby mode it can be wake up
with the BUS interface. Every pulse on the BUS (high
pulse or low pulse) with a pulse width of min. 45µs will
switch on the regulator.
After the BUS has wake up the regulator, it can only be
switched off with a high level followed by a low level on
the EN pin.
Reset Programming on VTR
With the VTR pin the reset switch off levels and delay
time can be programmed.
The voltage on VCC influences the reset function.
VTR-Programming
VTR-Mode
VTR = GND
VTR = VCC
VTR with R ≥ 50kΩ to GND
VTR with R ≥ 50kΩ to VCC
VRES
VRES = VRES1 = 3.15V
VRES = VRES2 = 4.65V
VRES = VRES1 = 3.15V
VRES = VRES2 = 4.65V
tRes
100ms
100ms
15ms
15ms
The voltage on VTR input is read out if the voltage at this
pin is higher than VRESEIN . This value defines the reset
switch off voltage VRES and switches on with the next os-
cillator cycle the pull up current source if VTR=low or the
pull down current source if VTR=high. The sources are
active for one oscillator cycle. The level changes during
this procedures on VTR, wich depends on the external
pull up or pull down resistors control the reset time tRR
Temperature Limitation
If the junction temperature 150ºC < Tj < 170ºC the over
temperture recognition will be active and the regulator
voltage will be switched off. After Tj fall below 140ºC the
TH8060 will be initialized, not depending on of the volt-
age levels on EN and BUS.
The function of the TH8060 is possible between TAmax
and the switch off temperature, but small parameter dif-
ferences can appear.
Low Voltage Detection VSUP
Low voltage on VSUP is monitored on SENSE output.
If VSUP has reached the level of VSUP =6.8V then the
SENSE output generates low level. In the normal
operating range is VSUP > 7.8V and the SENSE output
generates a high level.
Universal Comparator
The TH8060 consist a universal comparator for general
use. The positiv input of this comparator is connected
with the pin SI. The input voltage range of SI is 0V...VSUP.
The input voltage is compared with a fixed reference
voltage at high or low level and the comparator output
SO drives a 5V digital signal.
Datasheet Rev 1.1 March 2001
Page 5
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