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µPD16814
Stepping Motor Driver
Monolithic Dual H Bridge Driver Circuit
Features
The µPD16814GS is a monolithic dual H bridge driver circuit employing a power MOS FET for its driver stage. By complementing the P channel and N channel of the output stage, the circuit current is substantially improved as compared with that of the conventional charge pump driver.
Because the dual H bridge driver circuits at the output stage are independent of each other, this IC is ideal as the driver circuit for a 1-phase to 2-phase excitation bipolar driving stepping motor for the head actuator of an FDD.
Features
- Low ON resistance (sum of ON resistance of top and bottom FETs)
RON1 = 2.0 Ω TYP. - Low current consumption: IDD = 100 mA MAX.
- Four input modes independently controlling dual H bridge drivers
- Stop and Brake modes selectable
- Surface-mount mini-mold package: 16-pin plastic SOP
Ordering Information
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Document
Block Diagram
