Uln2003 Ic Circuit Diagram. Tpic2701 uln2001 uln2002 uln2004 l293d motor driver shield. A clamped diode is used as a freewheeling diode to avoid back emf effect in case of inductive loads.
These ics are used as relay drivers as well as to drive a wide range of loads line drivers display drivers etc. Tpic2701 uln2001 uln2002 uln2004 l293d motor driver shield. The pin diagram of ic uln2003a is shown in the above figure which consists of 16 pins.
Relay driver circuit using uln2003 if we make above circuit diagram using transistors it will be very difficult to design this circuit.
If it isn t burned than you are lucky and change the pins according to the above we mentioned. This ic comes in handy when we need to drive high current loads using digital logic circuits like op maps timers gates arduino pic arm etc. The logic diagram for uln2003 is shown in the figure below. This uln2003 ic is for 5v ttl and cmos logic devices.
