UNISONIC TECHNOLOGIES CO.
, LTD
UL497
LINEAR INTEGRATED CIRCUIT
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 *...