LM1949 - LM1949 Injector Drive Controller

Product Overview

National Semiconductor

Datasheet Details

Part number	LM1949
Manufacturer	National Semiconductor
File Size	214.99 KB
Description	LM1949 Injector Drive Controller
Datasheet	LM1949 Datasheet
Additional preview pages of the LM1949 datasheet.

Product details

Description

The LM1949 linear integrated circuit serves as an excellent control of fuel injector drive circuitry in modern automotive systems The IC is designed to control an external power NPN Darlington transistor that drives the high current injector solenoid The current required to open a solenoid is several times greater than the current necessary to merely hold it open therefore the LM1949 by directly sensing the actual solenoid current initially saturates the driver until the ‘‘peak’’ injector curren

Features

Y Y Y Y Y Y Y Y Y Y Y Y Y Low voltage supply (3V.
5 5V) 22 mA output drive current No RFI radiation Adaptable to all injector current levels Highly accurate operation TTL CMOS compatible input logic levels Short circuit protection High impedance input Externally set holding current IH Internally set peak current (4 c IH) Externally set time-out Can be modified for full switching operation Available in plastic 8-pin miniDIP.

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Published: Mar 22, 2005 |