September 1997

1/8

This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.

®

VB125SP

HIGH VOLTAGE IGNITION COIL DRIVER

POWER IC

s

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 VB125SP is a high voltage power integrated

circuit

made

using

SGS-THOMSON

Microelectronics

Vertical

Intelligent

Power

Technology, with vertical current flow power

darlington and

logic level compatible driving

circuit.

The VB125SP can be directly biased by using the

12V battery voltage, thus avoiding to use a low

voltage regulator. It has built-in protection circuits

for coil current limiting and collector voltage

clamping. It is suitable as smart, high voltage, high

current interface in advanced electronic ignition

system.

TYPE

VB125SP

370 V

9 A

200 mA

DRIVER

VOLTAGE

GND (Power)

INPUT

FLAG

GND (Control)

THERMAL

FLAG

9

10

7

8

TAB

REFERENCE

PROTECTION

R

SENSE

6

*

BLOCK DIAGRAM

1

10

PowerSO-10

1

TARGET DATA