SLRS027M – DECEMBER 1976 – REVISED FEBRUARY 2013
SCHEMATICS (EACH DARLINGTON PAIR)
10.5 kW
7.2 kW
3 kW
ULN2002A
R
B
ULN/ULQ2003A: R
B
= 2.7 k
W
ULN2003AI: R
B
= 2.7 k
W
ULN/ULQ2004A: R
B
= 10.5 k
W
7.2 kW
3 kW
ULN2003A, ULN2003AI, ULN2004A, ULQ2003A, ULQ2004A
All resistor values shown are nominal.
The collector-emitter diode is a parasitic structure and should not be used to conduct current. If the collector(s) go
below ground an external Schottky diode should be added to clamp negative undershoots.
Copyright © 1976–2013, Texas Instruments Incorporated
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