廬
VB027SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE
VB027SP
s
V
cl
300V
I
cl
9A
I
d(on)
130mA
PRIMARY COIL VOLTAGE INTERNALLY SET
s
COIL CURRENT LIMIT INTERNALLY SET
s
LOGIC LEVEL COMPATIBLE INPUT
s
DRIVING CURRENT QUASI PROPORTIONAL
TO COLLECTOR CURRENT
s
DOUBLE FLAG-ON COIL CURRENT
DESCRIPTION
The VB027SP is a high voltage power integrated
circuit made using the STMicroelectronics
VIPower鈩?technology, with vertical current flow
power darlington and logic level compatible
driving circuit. Built-in protection circuit for coil
current limiting and collector voltage clamping
allows the device to be used as smart, high
10
1
PowerSO-10鈩?/div>
voltage, high current interface in advanced
electronic ignition system.
BLOCK DIAGRAM
V
d
HV
C
INPUT
DRIVER
OVERTEMP.
PROTECTION
FLAG 1
QUASI PROP.
BASE CURRENT
+
-
-
R
SENSE
FLAG
FLAG 2
+
REFERENCE
June 1999
1/7
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