DESCRIPTION

The L484 is an integrated circuit designed for use with an NPN darlington in breakerless ignition systems with magnetic pickup sensors and high energy ignition coils.

A key feature of the L484 is flexibility. It can be used with a wide variety of magnetic sensors thanks to the special design which has two input pins from the pickup ; the first is the zero crossing detector for the ignition command and the second pin is used to calculate the dwell time. Moreover another pin is used to adapt the L484 to various pickup types.

Other features of the device include darlington over voltage protection, dump protection, a supply volt age range of 6-28 V.

. DIRECT DRIVING OF THE EXTERNAL DARLINGTON

. OPERATES WITH A WIDE RANGE OF MAGNETIC PICKUP TYPES

. CHARGING ANGLE (DWELL) CONTROL

. COIL CURRENT PEAK LIMITATION

. CONTINUOUS COIL CURRENT PROTECTION

. TACHOMETER SIGNAL OUTPUT

. EXTERNAL DARLINGTON OVERVOLTAGE PROTECTION

. LOAD DUMP AND REVERSE BATTERY PROTECTION

. POSSIBILITY OF SPARK POINT DELAYING (ANTI KNOCK SYSTEM)

L484属于集成电路（IC） > 电源管理 - 专用。意法半导体（ST）集团制造生产的L484电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。