LB Push-pull Four Channel Drivers. OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT. 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. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters .

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You can create 2 full bridges with them, 4 half bridges or any combination you like.

LB Datasheet(PDF) – STMicroelectronics

But sometimes you just don’t have a need for a motor to run in 2 directions. Product is in volume production only to support customers ongoing production. Each motor takes 3 Arduino pins. As you might see from this reply, there’s a multitude of motor types available, and they aren’t all to be powered the same way. If you need to control 1 direction, you can do so with 1 half bridge. Unsure about whether the L will work with your motor? If it gets too hot to touch, you can’t use it with your motor.

A more recent, improved specification, pin-for-pin compatible chip is recommended for new designs: Pin 1 is at the top left when the notch in the package faces up.

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

Most hobby satasheet 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. Note to ME students: You need to know the motor anyway, because you also need to know the voltage, but more importantly the stall current it will take. Not Recommended for New Design.


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The generic 1n diodes aren’t fast and as raschemmel pointed out will probably not withstand the currents. Both will need external diodes.

dztasheet You can use the L in any combination shown, you aren’t restricted to those examples. Who We Are Management. I need to control 2 motors and I want to use the 1 amp capable H bridge.

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So you need to know what motor you are going to use before you are designing your electronics. The L is limited to mA, but in reality can only handle much small currents unless you have done some serious heat sinking to keep the case temperature down. Communications Equipment, Computers and Peripherals. Did you l2993b the grounds?

Product is in design stage Target: The most common method to drive DC motors in two directions under control of a computer is with an H-bridge motor driver. If you need to l93b 2 directions, you need a full bridge. A separate supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation. Fast diodes like the 1N or the 1N? The L is simplest and inexpensive for low current motors, For high current motors, it is less expensive to build your own H-bridge from scratch.

There is an L and an LD part number. The L comes in a standard pin, dual-in line integrated circuit package. IoT for Smart Things. Please contact our sales support for information on specific devices.


Product is datsaheet design feasibility stage. Support Home Complete list and gateway to support services and resource pools. If you are only using one motor, leave L pins 9, 10, 11, 12, 13, 14, and 15 empty.

Distributor Name Region Stock Min. Product is in volume production Evaluation: The LB can handle 1 amp per motor but the pins seem to differ, or the way the motors must be connected seems not to be the same: H-bridges can be built datsheet scratch with bi-polar junction transistors BJT or with field effect transistors FETor can be purchased as an integrated unit in a single integrated circuit package such as the L You need to drive both wires to the motor, so you need two drivers.

I don’t understand the schematics in the pdf. The motor on the left can be driven to run both clockwise or counterclockwise.

Push-pull Four Channel Drivers

No commitment taken to design or produce NRND: Product is in volume production 1. I did link these Shottky diodes: I mentioned fast diodes, as a lot of people building stuff like this aren’t aware of their existence and purposes.

ST Code of Conduct Blog. Yes, pulse width on enable pin can control speed. You might find out this driver isn’t the best choice for your motor type, or maybe it is.