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參數資料
| 型號： | L497 |
| 廠商： | 意法半導體 |
| 英文描述： | HALL EFFECT PICKUP IGNITION CONTROLLER |
| 中文描述： | 霍爾效應皮卡點火控制器 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 106K |
| 代理商： | L497 |
L497
March1998
HALLEFFECT PICKUP IGNITION CONTROLLER
COIL CURRENT CHARGING ANGLE (dwell)
CONTROL
.
PROGRAMMECOILCURRENT PEAKLIMITA-
TION
.
PROGRAMMABLE DWELL RECOVERY TIME
WHEN 94 % NOMINAL CURRENT NOT
REACHED
.
RPM OUTPUT
.
PERMANENT CONDUCTION PROTECTION
.
OVERVOLTAGE PROTECTION FOR EXTER-
NAL DARLINGTON
.
INTERNALSUPPLYZENER
.
REVERSEBATTERY PROTECTION
.
DIRECT
POWER DARLINGTON
DRIVING
OF
THE
EXTERNAL
DESCRIPTION
TheL497is anintegratedelectronicignitioncontrol-
ler forbreakerlessignitionsystemsusingHall effect
sensors.
ORDERING NUMBERS :
L497B(DIP16)
L497D1(SO16)
DIP16
SO16
The device drives an NPN external darlington to
controlthecoilcurrentprovidingthe requiredstored
energywith low dissipation.
A specialfeatureof the L497 is the programmable
time for the recovery of the correctdwell ratio T
d
/T
whenthecoilpeakcurrent failstoreach94 %ofthe
nominalvalue.In thiswayonlyonesparkmayhave
an energylessthan94% ofthenominaloneduring
fast accelerationor coldstarts.
BLOCK DIAGRAM
1/11
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PDF描述 |
|---|---|
| L497B | HALL EFFECT PICKUP IGNITION CONTROLLER |
| L4990 | PRIMARY CONTROLLER |
| L4990A | PRIMARY CONTROLLER |
| L4990AD | PRIMARY CONTROLLER |
| L4990D | PRIMARY CONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L-497 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:VERTICAL MOUNTED TOROID |
| L4970 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:10A SWITCHING REGULATOR |
| L4970A | 功能描述:直流/直流開關調節器 5.1 to 40V Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L4970A | 制造商:STMicroelectronics 功能描述:IC SWITCHING REG 10A 4970 |
| L4970HT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
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