LM1949 Datasheet - National Semiconductor

LM1949 LM1949 Injector Drive Controller

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 severa.

LM1949 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 Inte

LM1949_NationalSemiconductor.pdf