VB326 Datasheet, PDF (5/9 Pages) STMicroelectronics – HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C

VB326SP
Figure 3: Self Clamped Inductive Switching Figure 4: Low voltage clamp feature
Current Vs. Time
10
8
T=25º
6
4
T=150º
2
0
200
300
400
500
600
700
800
900
1000
Time in Clamp (µsec)
Figure 5: Typical application diagram
+5V
1µF
100nF
V_bat
µP
1K
1K
1K
1nF 18K
V_IN ^VCC
E
BD
HV_C
FLAG
LGND
GND
ENABLE pin can be alternatively connected to LGND
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