![](/html/ST-Microelectronics/189167/page11.png)
L5956
Timing diagrams
Figure 6. Hold and thermal protection
DUMP
22
18
VIN1
9
9.5V
8.5V
5V
3.3V
5
HOLD
TEMPERATURE
PROTECTION
8.5V
REG1(8.5V)
5V
REG2(5V)
5V
REG3(5V)
3.3V
REG4(3.3V)
5V
EN1-3
EN4
Figure 7. Ignition buffer diagram
50V
IGNITION
INPUT1.27V
1.17V
IGNITION
OUTPUT
14V
VIN1
Figure 8. Protection of the power switch
VSW
16V
ON T≅160
D02AU1423A
LOAD DUMP
D02AU1424
DELAYED
NOT
IN CASE
DELAYED VIN1 <16V
1.5A
3A
D02AU1425
ISW
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