L497

更新时间： 2024-11-13 22:47:23

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		控制器
页数	文件大小	规格书
11页	108K
描述
HALL EFFECT PICKUP IGNITION CONTROLLER

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中文翻译

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数据手册

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L497 数据手册

L497

HALL EFFECT PICKUP IGNITION CONTROLLER

DIRECT DRIVING OF THE EXTERNAL

POWER DARLINGTON

COIL CURRENT CHARGING ANGLE (dwell)

CONTROL

PROGRAMMECOIL CURRENT PEAKLIMITA-

TION

PROGRAMMABLE DWELL RECOVERY TIME

WHEN 94 % NOMINAL CURRENT NOT

REACHED

DIP16

SO16

ORDERING NUMBERS : L497B (DIP16)

L497D1 (SO16)

RPM OUTPUT

PERMANENT CONDUCTION PROTECTION

OVERVOLTAGE PROTECTION FOR EXTER-

NAL DARLINGTON

INTERNAL SUPPLY ZENER

REVERSE BATTERY PROTECTION

The device drives an NPN external darlington to

controlthecoil current providingthe requiredstored

energy with low dissipation.

A special feature of the L497 is the programmable

time for the recovery of the correct dwell ratio T_d/T

when thecoil peakcurrent fails to reach 94 % of the

nominal value.In this wayonly one spark mayhave

an energylessthan 94 % ofthe nominaloneduring

fast accelerationor cold starts.

DESCRIPTION

The L497is anintegratedelectronicignitioncontrol-

ler for breakerless ignition systemsusing Hall effect

sensors.

BLOCK DIAGRAM

1/11

March 1998

12 3 4 5 6 7...11

中文翻译

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