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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Assume you have only one motor connected with the enable tied to Arduino Pin 3, and the two direction controls tied to Arduino Pins 4 and 5. There is an L and an LD part number. If you want to control a stepper motor, you need a full bridge per coil pair.

MAS3 on May 05, Product is in volume production only to support customers ongoing production. Fast l293h like the 1N or the 1N? I need to dataxheet 2 motors and I want to use the 1 amp capable H bridge.

So you can do with just one driver.

I did link these Shottky diodes: MarkT Brattain Member Posts: The pinout for the L in the pin package is shown below in top view. H-bridges can be built from 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 Additionally, the LE has external connection of sensing resistors, for switchmode control.

Each motor takes 3 Arduino pins. If you are only using one motor, leave L pins 9, 10, 11, 12, 13, 14, and 15 empty. Cloud Components and Modules. The motors on the right can turn clockwise only. 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.


As far as I know the LD is rated as 0. The LB and LE are quad push-pull drivers capable of datashewt output currents to 1A per channel. General terms and conditions. Unsure about whether the L will daasheet with your motor?

LB Datasheet(PDF) – STMicroelectronics

Here you only need to drive one wire, the other can be fixed to GND in this case. Each channel is controlled by datassheet TTL-compatible logic input and each pair of drivers a full bridge is equipped with an inhibit input which turns off all four transistors.

You need fast diodes for this, so the short circuit is reached before damage can be done to the transistors. L no D is comparable to LB.

Communications Equipment, Computers and Peripherals. So you need to know what motor you are going to use before you are designing your electronics.

You need to know the motor anyway, because you also need to know the voltage, but more importantly the stall current it will take. If you need to control 1 direction, you can do so with 1 half bridge. You can use the L in any combination shown, you aren’t restricted to those examples.

Push-pull Four Channel Drivers

Hook up the circuit and run your motor while keeping your finger on the chip. Support Home Video Center.

The L is an datasneet circuit motor driver that can be used for simultaneous, bi-directional control of two small motors. Most hobby setups with steppers will require 2 full bridges, so one entire L, which will probably be the reason for the existence of datashedt package except for the hobby part, very few hardware is produced just for hobbyists.


Please contact our sales support for information on specific devices. Did you connect the grounds? I mentioned fast diodes, as a lot of people building stuff like this aren’t aware of their existence and purposes.

Have a look at “blink without delay”.

LB – Push-Pull Four Channel Drivers – STMicroelectronics

Media Subscription Media Contacts. The PDF shows multiple options in 1 schematic. Now with Unlimited Eagle board sizes! But sometimes you just don’t have a need for a motor to run in 2 directions.

Menu Products Explore our product portfolio. If it gets too hot to touch, you can’t use it with your motor. Product is in volume production Evaluation: 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.

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: I don’t understand the schematics in the pdf.

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Those diodes will from a short circuit to the reversed voltage, but not for the output signal.