I currently am required to use a device that is old. It is a darlington driver that has no known well defined equivalent model (SG2815). When in saturation, the output VCE of the device is spec'd at 1.8V nom and 2.1V max.
The question is, is it valid to use the output transfer characteristic to determin the equivalent series resistance of the device in saturation? For instance, the output characteristic shows a 1V saturation voltage with a collector current of 300mA. That defines a 3.33Ω resistor.
Would a valid simple output model be an ideal voltage source of 1V with a series resistance of 3.33Ω for that collector current?
Any help appreciated.
Thanks!
The question is, is it valid to use the output transfer characteristic to determin the equivalent series resistance of the device in saturation? For instance, the output characteristic shows a 1V saturation voltage with a collector current of 300mA. That defines a 3.33Ω resistor.
Would a valid simple output model be an ideal voltage source of 1V with a series resistance of 3.33Ω for that collector current?
Any help appreciated.
Thanks!