UNISONIC TECHNOLOGIES CO., LTD

UL497

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R118-015.a

HALL EFFECT PICKUP

IGNITION CONTROLLER

DESCRIPTION

As an integrated electronic ignition controller for breakerless

ignition systems which uses Hall effect sensors, the UTC UL497

drives an NPN external darlington to control the coil current

providing the required stored energy with low dissipation.

One of the UTC UL497 special features is the programmable

time for the recovery of the correct dwell ratio Td/T while the coil

peak current fails to reach 94 % of the nominal value.

FEATURES

* Direct driving of the external power darlington

* Coil current charent charging angle control

* Programme coil current peak limitation

* When 94% nominal current not reached programmable dwell

recovery time

* RPM output

* Has peranent conduction protection

* Overvoltage protection

* Internal supply zener

* Reverse battery protection

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

UL497L-S16-R

UL497G-S16-R

SOP-16

Tape Reel

UL497L-S16-T

UL497G-S16-T

SOP-16

Tube