LB Push-pull Four Channel Drivers. OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters . One of the very common H-bridge ICs available in the market is LB or. LD It is always advised to go through the datasheet of the ICs before using them.

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Hook up the circuit and run your motor while keeping your finger on the chip. No commitment taken to produce Proposal: I did link these Shottky diodes: Specifications mentioned in this publication are subject.

The most common method to drive DC motors in two directions under control of a computer is with an H-bridge motor driver. The motors on the right can turn clockwise only. The LB can handle 1 l293bb per motor but the pins seem to differ, or the way the motors must be connected seems not to be the same: During soldering the pins temperature must not exceed ? This publication supersedes and replaces all information previously supplied. Please contact our sales support for information on specific devices.

But sometimes you just don’t have a need for a motor to run in 2 directions. No commitment taken to design or produce NRND: Pin 1 is at the top left when the notch in the package faces up. Output Voltage versus Input Voltage. I don’t understand the schematics in the pdf.


So you need to know what motor you are going to use before you are designing your electronics. Low Voltage Inhibit Current. A more recent, improved specification, pin-for-pin compatible chip is recommended for new designs: Pick the “D” version because it has built in flyback diodes to minimize inductive voltage spikes. Did you connect the grounds? A daasheet supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation.

Product is in design feasibility stage.

LB datasheet, Pinout ,application circuits Push-pull Four Channel Drivers

The L comes in a standard pin, dual-in line integrated circuit package. The L consists of 4 half bridges. Total Quiescent Supply Current. The LB and LE are quad push-pull drivers capable of delivering output currents to 1A per channel.

Note that the names for pin functions may be slightly different than what is shown in the following diagrams. If you need to control 2 directions, you need a full bridge.

There are motors available that are made to rotate in a specific direction most of those also have a gear attached.

Each channel is controlled by a TTL. Have a look at “blink without delay”. There dtaasheet an L and an LD part number. C and the soldering time must not be longer. Here you only need to drive one wire, the other can be fixed to GND in this case. MAS3 on May 05, A separate supply in. No license is granted. ST Code of Conduct Blog. Most hobby setups with steppers will require 2 full bridges, so one entire L, which will probably be the reason for the existence of this package except for the hobby part, very few hardware is produced just for hobbyists.


Total Quiescent Logic Supply. Marketing proposal for customer feedback. Output Voltage versus Inhibit Voltage. General terms and conditions.

(PDF) L293B Datasheet download

I need to control 2 motors and I want to use the 1 amp capable H bridge. STMicroelectronics products are not. O Pins of L You might find out this driver isn’t the best choice for your motor type, or maybe it is. The following schematic shows how to connect the L to your motor and the Arduino. I mentioned fast diodes, as a lot of people building stuff like this aren’t aware of their existence and purposes.

Board Copper Area which is Used as Heatsink. So you can do with just one driver. Sink Output Saturation Voltage. Both will need external diodes. The PDF shows multiple options in 1 schematic. The external heatsink or printed circuit copper area must be connected to electrical ground.

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