UA9849 Datasheet (Unisonic Technologies)

UA9849, 3-PHASE MOTOR DRIVER

The UTC UA9849 is ICs developed for CD-ROM spindle motor drives.

These ICs possess a short brake and reverserotation brake for two types of brake functions, and also contain FG output and rotation direction detection (FR) circuits, making them high-functionality and high-performance ICs.

UA9849 Features

* Three-phase, full-wave, pseudo-linear drive system.

* Built-in power save and thermal shutdown functions.

* Built-in current limiter and Hall bias circuits.

* Built-in FG output.

* Built-in rotation direction detector.

* Built-in reverse rotation prevention circuit.