L482

November 1991

HALL–EFFECT PICKUP IGNITION CONTROLLER

.

DIRECT DRIVING OF THE EXTERNAL PO-

WER DARLINGTON

.

COIL CURRENT CHARGING ANGLE (DWELL)

CONTROL

.

COIL CURRENT PEAK VALUE LIMITATION

.

CONTINUOUS COIL CURRENT PROTECTION

.

CONDUCTION AND DESATURATION TIME

OUTPUT SIGNALS

.

PERMANENT CONDUCTION PROTECTION

RESET OUTPUT SIGNAL

.

OVERVOLTAGE PROTECTION FOR EXTER-

NAL DARLINGTON

.

LOAD DUMP PROTECTION

DESCRIPTION

The L482 is an integrated circuit designed for use

with an NPN darlington in breakerless ignition sy-

stems with hall-effect pickup sensors and high ener-

gy ignition coils.

It controls the energy stored in the ignition coil and

the desaturation time of the external darlington to

limit the power dissipation.

DIP16

ORDERING NUMBERS : L482 (DIP16)

L482D1 (SO16)

PIN CONNECTIONS (top views)

DIP16

SO16

The L482 is also particularly suitable for use as igni-

tion control and driving stage in more sophisticated

car electronic systems which employ microproces-

sor circuits.

SO16

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