You have entered a value in the highlighted fields below that contain invalid characters. Please revise your selection using valid characters only.

Product may not be an exact match for your search

You previously purchased this product. View in Order History



Peripheral Driver, Power, 1 Output, 3 V to 5.5 V supply, 200 mV/22 mA out, DIP-8


Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:

Product Overview

The LM1949N/NOPB is an Injector Drive Controller for use with throttle body injection and fuel injection. The 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 current is four times that of the idle or holding current (-). This guarantees opening of the injector. The current is then automatically reduced to the sufficient holding level for the duration of the input pulse. In this way, the total power consumed by the system is dramatically reduced.
  • 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 x IH)
  • Externally set time-out
  • Can be modified for full switching operation
  • 1235mW Power dissipation


Motor Drive & Control, Industrial


Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Product Information

Want to see similar products? Simply select your required attributes below and hit the button ×








MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Technical Docs (0)

1,279 In stock Need more?

1,279 available for 3 - 4 business days delivery


Pricing is unavailable. Please contact customer services.

Price for:
Multiple: 1 Minimum: 1
Quantity Price Your Price
1+ RM23.77
Promotional price
Contract Price
Web only price
Web only contract price

Pricing is unavailable. Please contact customer services.

No longer stocked:: No Longer Manufactured::
Add to Basket Back Order Pre-Order
Restricted Item
Enter Your Part No/Line Note
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews

Customer Q&A Exchange