LM1949 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;.
LM1949 Key Features
- 2 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 patible Input Logic Levels
- Short Circuit Protection
- High Impedance Input
- Externally Set Holding Current, IH
- Internally Set Peak Current (4 × IH)