TH3122 Datasheet, PDF (7/14 Pages) Melexis Microelectronic Systems – K-Bus Transceiver with integrated Voltage Regulator

TH3122
K-Bus Transceiver with integrated Voltage Regulator
Electrical Specification
All voltages are referenced to ground (GND). Positive
currents flow into the IC. The absolute maximum ratings
given in the table below are limiting values that do not
lead to a permanent damage of the device but exceeding
Operating Conditions
Parameter
Battery voltage
Supply voltage
Operating ambient temperature
Junction temperature ^[1]
any of these limits may do so. Long term exposure to
limiting values may affect the reliability of the device.
Reliable operation of the TH3122 is only specified within
the limits shown in ”Operating conditions”.
Symbol
V_S
V_CC
T_A
T_J
Min
5.25
4.75
-40
Max
16
5.25
+125
+150
Unit
V
V
°C
°C
Absolute Maximum Ratings
Parameter
Symbol Condition Min
Max Unit
-1.0
16
Supply voltage at VS ^[2]
V_S
T ≤ 1min
-
30
V
T ≤ 500 ms
-
40
Input voltage at pin BUS ^[2]
-24
V_INBUS
T ≤ 500 ms
-
30
V
40
Difference VS-VCC
V_S-VCC
-0.3
40
V
Input voltage at pin EN and SI
V_INENSI
-0.3
V_S+0.3
V
Input voltage at pin VTR, TxD, SEN/STA, SO, RESET, SENSE
V_IN
Input current at pin EN, VTR, SI, SO, SEN/STA, TxD,
RxD,RESET, SENSE
I_IN
-0.3
V_CC+0.3 V
-25
25
mA
Input current for short circuit of pin VS and VCC
Power dissipation
I_Short
P₀
-500
500
mA
Internal limited ^{[3] [4]}
mW
Thermal resistance from junction to ambient
Junction temperature ^[4]
R_THJA
T_J
50
K/W
150
°C
Storage temperature
T_STG
-55
150
°C
______________________________
[1] _{Junction temperature is defined in IEC 747-1}
[2] _{The current and voltage values are valid independent from each other.}
[3] _{The maximum power dissipation is defined by the ambient temperature and the thermal resistance. It can be calculated with}
P₀ =(V_S-V_CC)*I_VCC+P_BUS. P_BUS is the BUS driver output with normally ≤25 mW
[4] _{see over temperature protection}
3901003122
Rev 004
Page 7
Dec/04