Auto & Moto Ignition application Specific IC
Ref.:L497 TL497
Hall input& Automatically adjust dwell
100%New Original test
Automotive Hall Effect Pickup Ignition Controller IC
DESCRIPTION
The LD497 is an integrated electronic ignition controller for breakerless ignition systems using Hall
effect sensors. The device drives an NPN external darlington to control the coil current providing the
required stored energy with low dissipation. A special feature of the LD497 is the programmable
time for the recovery of the correct dwell ratio Td/T when the coil peak current fails to reach 94% of
the nominal value. In this way only one spark may have an energy less than 94% of the nominal one
during fast accelerationor cold starts.
FEATURES
*Direct driving of the external power darlington
*Coil current charging angle(dwell) control
*Programme coil current peaklimitation
*Programmable dwell recovery time when 94 % nominal current not reached
*RPM Output
*Permanent conduction protection
*Overvoltage protection for exterrnal darlington
*Internal supply zener
*Reverse battery protection
Application Circuit
Technical Specifications
DANDONG HUAAO ELECTRONICS CO.,LTD
Address: No.64 Taoyuan street,Dandong Liaoning, China Pc: 118002
Contact: Mr. Nan Li Mobile: +15942599631
Tel: +86-0415-6161121 Fax: +86-0415-6179223
Web: http://www.huaaoe.com http://ha.en.alibaba.com