Click to expand full text
CS8442
CS8442
85mA Dual H-Bridge Odometer Driver with Buffered Speed Signal Output
Description
The CS8442 is a stepper motor driver that implements an Hbridge design to drive two coils in an eight step sequence each revolution. Each H-bridge is capable of delivering 85mA to the load. The sequencer function insures that the odometer is monotonic and that cross-conduction of each H bridges does not occur. Before the beginning of each sequence, both bridges are turned off. This Òdead zoneÓ minimizes the fly back energy generated in the inductive loads. In addition, on board clamp diodes across each output protect the output drive transistors from excessive fly back voltages. The CS8442 is fault protected against reverse battery, short circuit, and over voltage conditions.
CS8442 Datasheet
