U6268B Datasheet, PDF (7/12 Pages) TEMIC Semiconductors – Side-Airbag Sensor Dual Interface

U6268B
Parameters
Test Conditions / Pins
Symbol Min. Typ. Max. Unit
Voltage threshold CLL- CLLx low-level voltage threshold
V_{CLL_L}
1.75
comparator
CLLx high-level voltage threshold
V_{CLL_H}
1.43
Voltage hysteresis
V_{CLL_hys}
0.26
Minimal voltage at
OCMx
Current-limitation level
Overcurrent-detection
level
Current limitation minus
overcurrent detection
I_OUT = 0 to 5 mA
v V_S 40 V OUTx short to GND
v V_S 40 V
V_{OCM_lim} – V_{OCM_over}
V_{OCM_min}
V_{OCM_lim}
4.3
V_{OCM_det}
4.2
D_lim_OCM 0.15
2.4
V
1.9
V
0.6
V
0.5
V
5.3
V
4.9
V
0.5
V
Intern. pull-down current
Function RETURN1, RETURN2
I_{OCM_sink}
0.1
0.45 mA
Enable high saturation
voltage
Dynamic resistance
Current limitation
RETURNx is always
higher than current
limitation OUTx
I_RETURN = 50 mA
w dI 10 mA
Enable high, V_RETURNx = 2 V
v Enable high, V_RETURNx 18 V
v Enable low V_RETURNx 18 V
V_{ret_sat}
R_ret
2
I_{ret_lim}
60
I_{ret_lim}
70
I_{ret_lim}
0.8
0.5
V
8
W
150 mA
200 mA
2
mA
Overcurrent-detection
level
Delay time
C_RETURN = 47 nF
Threshold comparator, switch-off
return
Threshold comparator, switch-on
return
Hysteresis
Switching on I_RETURN at 50 mA
Switching off I_RETURN at 1 mA
Function CLL1, CLL2 (CLLx with 2 kW to 5 V)
I_OUT threshold CLL
comparator
R_OCM = 750 W
CLL low-level threshold
CLL high-level threshold
CLL saturation voltage
CLL leakage current
Hysteresis
v I_CLL 2.5 mA
v V_CLL 6.5 V
Response time to current
change
I_OUT to CLL rise
I_OUT to CLL fall
Max. difference between rise and
fall time
CLL output switching Rise
speed
Fall
Current transmission rate
I_{ret_low}
1.4
I_{ret_high}
1.1
I_{ret_hys}
0.2
t_{dRet_on}
3
t_{dRet_off}
30
I_{CLL_L}
I_{CLL_H}
I_{CLL_hys}
V_{CLL_sat}
I_{CLL_leak}
t_{Cll_rise}
t_{Cll_fall}
t_{DĆrise-fall}
t_{CLL_rise}
t_{CLL–fall}
23.3
19.1
3.5
0.1
0.1
60
2
V
1.5
V
0.7
V
30
ms
90
ms
27.3 mA
22.3 mA
8.2 mA
0.4
V
1
mA
2
ms
2
ms
1
ms
1
ms
1
ms
kHz
Current transmission
3 dB bandwidth
500
kHz
Function ENABLE1, ENABLE2
Enable low–level
threshold
V_{Enable_off}
2
6.5
V
Enable high-level
threshold
V_{Enable_on} –0.3
0.8
V
TELEFUNKEN Semiconductors
7 (12)
Rev. A1, 21-May-97
Preliminary Information