廬
VB125ASP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE
VB125ASP
s
V
cl
340V
I
cl
11.1A
I
CC
200mA
PRIMARY COIL VOLTAGE INTERNALLY SET
s
COIL CURRENT LIMIT INTERNALLY SET
s
LOGIC LEVEL COMPATIBLE INPUT
s
BATTERY OPERATION
s
SINGLE FLAG-ON COIL CURRENT
s
TEMPERATURE COMPENSATED HIGH
VOLTAGE CLAMP
DESCRIPTION
The VB125ASP is a high voltage power integrated
circuit made using the STMicroelectronics
VIPower鈩?M1-2 technology, with vertical current
flow power darlington and logic level compatible
driving circuit. The VB125ASP can be directly
biased by using the 12V battery voltage, thus
avoiding to use a low voltage regulator. It has
BLOCK DIAGRAM
10
1
PowerSO-10鈩?/div>
built-in protection circuit for coil current limiting
and collector voltage clamping. It is suitable as
smart, high voltage, high current interface in
advanced electronic ignition system.
V
CC
C
S
HV
C
INPUT
DRIVER
FLAG
FLAG
VOLTAGE
REFERENCE
THERMAL
PROTECTION
R
SENSE
*
GND
PWR GND
(*) Pins 1...5
December 2000
1/9
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