westaust55
Moderator
A little late for my recent project work involving some 50 off L293D dual H-bridge IC's (some folks may also know of the approx. equivalent the SN754410) however I have just come across an alternative dual H-bridge IC being the LB1909MC.
http://www.onsemi.com/pub_link/Collateral/ENA2037-D.PDF
This is only available in a 10 pin SMD SOIC package format which is still solderable using "normal" soldering irons with care. I have soldered SOIC chips from 8 pin to 32 pin successfully in the past.
There are seemingly a few advantages including:
1. No need for a separate 5Vdc logic supply
2. One input controls both sides of a H-bridge - so no need for an inverter to the other side
3. Far lower internal current draw than the L293D (ie 25 mA when En is high compared to 44 mA)
4. Output saturation voltage is lower (ie 0.5 V @ 400 mA compared to 1.2/1.4V @ 600 mA for L293D)
There is only 1 Output Enable pin to control both H-bridges.
So certainly an alternative IC that I will be considering and maybe experimenting with in the near future for bi-polar stepper motors and small low current DC motors requiring bi-directional control.
The only source I found at this time was Mouser.
http://www.onsemi.com/pub_link/Collateral/ENA2037-D.PDF
This is only available in a 10 pin SMD SOIC package format which is still solderable using "normal" soldering irons with care. I have soldered SOIC chips from 8 pin to 32 pin successfully in the past.
There are seemingly a few advantages including:
1. No need for a separate 5Vdc logic supply
2. One input controls both sides of a H-bridge - so no need for an inverter to the other side
3. Far lower internal current draw than the L293D (ie 25 mA when En is high compared to 44 mA)
4. Output saturation voltage is lower (ie 0.5 V @ 400 mA compared to 1.2/1.4V @ 600 mA for L293D)
There is only 1 Output Enable pin to control both H-bridges.
So certainly an alternative IC that I will be considering and maybe experimenting with in the near future for bi-polar stepper motors and small low current DC motors requiring bi-directional control.
The only source I found at this time was Mouser.