HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
®
VB923
HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
s s s s
NO EXTERNAL COMPONENT REQUIRED INTEGRATED HIGH VOLTAGE CLA...
Description
®
VB923
HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
s s s s
NO EXTERNAL COMPONENT REQUIRED INTEGRATED HIGH VOLTAGE CLAMP COIL CURRENT LIMIT INTERNALLY SET HIGH RUGGEDNESS
DESCRIPTION The VB923 is a monolithic high voltage integrated circuits made using STMicroelectronics VIPower Technology, which combines a vertical current flow power trilinton with a coil current limiting circuit and a collector voltage clamping. The device is peculiarly suitable for application in high performance electronic car ignition, where coil current limitation and voltage clamping are required.
3 2 1
TO-247
BLOCK DIAGRAM
October 1998
1/5
VB923
ABSOLUTE MAXIMUM RATING
Symbol HVc Ic I in Ptot T stg Tj E s/b Collector Voltage Collector Current Input Current Total Dissipation at T c = 25 o C Storage Temperature Operating Junction Temperature Avalanche Energy Parameter Value Internally Limited Internally Limited 40 150 -40 to 150 -40 to150 350 Unit V A mA W
o o
C C
mJ
THERMAL DATA
Symbol R thj-case R thj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max Value 0.83 30 Unit
o o
C/W C/W
ELECTRICAL CHARACTERISTICS (Vbatt = 14 V, HEI Coil = xx, Tcase = 25 oC unless otherwise specified)
Symbol Icgo V cl V cg(sat ) I cl * V f ** V inCL V inTH t d(off) Parameter Collector Cut-off Current Clamping Voltage Power Stage Saturation Voltage Coil Current Limit V in = 0 Test Conditions HV c = 200 V
o
Min.
Typ.
Max. 250
Unit µA V V A V V V µs
-40 < T j < 125 C I...
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