ETAS FETK-S2.1, Руководство пользователя

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ETAS Technical Data
FETK-S2.1 - User’s Guide 36
7.5 Power Supply
7.6 Test Characteristics
Parameter Symbol Condition Min Typ Max Unit
Permanent power
supply
(car battery) U
Batt
Vehicle usage
1)
6.0 12 36 V
[all values ±0%]
Cranking Voltage U
Batt
< 3 seconds 3 V
Standby current I
STBY
U
Batt
= 12 V;
ECU off;
no load from ECU;
T = 20 °C
10 16 25 mA
Operating current I
Batt
U
Batt
= 12 V;
no load from ECU;
T = 20 °C
50 95 170 mA
Power consump-
tion P
Batt
U
Batt
= 12 V;
I = 0 mA at pin
ECU_SBRAM;
T = 20 °C
1.14 W
Power consump-
tion P
Batt
U
Batt
= 12 V;
I = 500 mA at pin
VDDSTBY [1.25 V];
I = 80 mA at Pin
VDDPSTBY;
T = 20 °C
2.4 W
1)
The FETK-S2.1 implements reverse voltage protection in the same range
and may be used only with central load dump protection.
24 V vehicles require U
Batt
disturbing pulse reduction to 12 V vehicle system.
12 V vehicles don’t require special disturbing pulse reductions.
NOTE
The FETK-S2.1 will accept permanent power supply voltage dips (for addi-
tional details of 3 V low voltage operation, see ISO standard 16750).
Parameter Symbol Condition Min Typ Max Unit
Start Up Time 1
1)
t
startup1
U
Batt
= 12 V
ECU_VDDP goes
high
0 6 ms
Start Up Time 2
1)
t
startup2
U
Batt
goes high 180 670 ms
1)
/PORST is not pulled low until FETK start up time