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Sanyo LB1836M Motor Driver IC

Pololu item #: 399

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The Sanyo LB1836M is a great low-voltage dual motor driver (dual H-bridge) that we use in our micro dual serial motor controller and original Orangutan robot controllers. The low-voltage operation and relatively high peak current of 1 A make it an attractive option for those wanting to build small motion control systems powered by one or two Li-based cells or a few NiMH cells.

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Description

The Sanyo LB1836M is a dual low-voltage H-bridge that can be used for bidirectional control of two DC motors or one bipolar stepper motor. With an operating voltage as low as 2.5 V for logic and 1.8 V for the motor(s), this controller is great for small motors powered from a single Li-based battery or 2-6 NiMH or alkaline cells. The peak current is up to 1 A per channel, but thermal dissipation usually limits the available continuous current to around 0.5 A (this depends on the PCB layout and heat sinking).

The motor driver features thermal shutdown that can help the chip withstand over-current and short-circuit situations. The IC is is only available in a surface-mount package, but the 1.0 mm pitch is relatively accessible even with a standard soldering iron, making it an attractive option for those wanting to build small motion control systems.

Key Features and Specificactions

2.5-9.0 V logic operating voltage
1.8-9.0 V motor operating voltage
Two independent H-bridges
Maximum current: 1 A per channel
14-pin surface mount MFP14S package with 1.0-mm pitch (smaller than SOIC and larger than TSSOP)