William At MyBlueRoom New Member Jul 26, 2006 #1 Since the ULN2803 is a darlington pair, I'm wondering how much is the voltage drop from E-C. 1.4V? .7V? Can't find it in the spec sheet.
Since the ULN2803 is a darlington pair, I'm wondering how much is the voltage drop from E-C. 1.4V? .7V? Can't find it in the spec sheet.
H hjames New Member Jul 26, 2006 #2 TI's ULN2803A variant has it listed as VCEsat (1.6V max @ 350mA) on page 3. **broken link removed**
Roff Well-Known Member Jul 26, 2006 #3 And ST Microelectronics has a graph of Vce(sat) vs Ic. See below. Attachments uln2803 Vcesat.PNG 24 KB · Views: 722
William At MyBlueRoom New Member Jul 26, 2006 #4 Ahh, thanks. Guess I have to learn to read spec sheets better.