FD0251f

FD0255f

Smart motor driver with embedded Hall sensor

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 Nov. 06, 2008

P.1

FEELING

TECHNOLOGY

Features

Motor driver with integrated Hall sensor

High current driving capability

Lock-shutdown protection & auto-restart function

Built-in FG(frequency generation) signal outputPrecise magnetic switching thresholds

“Soft-switch” phase-switching technique to reduce vibration and acoustic noise(patent pending)

Thermal shutdown protection

PWM speed control(only available for FD0255f)

Available in both TS825(FD0251f) and TS826(FD0255f) packages

General Description

FD0251f/FD0255f is a single coil motor driver with embedded Hall sensor. It integrates the motor driver with the Hall

sensor, which simplifies the PCB(printed circuit board) design and make the fabrication of small-size motors

possible.

Lock-shutdown and auto-restart function keeps the motor from being over-heated and restarts the motor after being

locked.

“Soft-switch” phase-switching technique is used to reduce the vibration and acoustic noise.

Thermal-shutdown protection ensures the motor driver to operate under specified temperature ranges.

All the protection mechanisms mentioned above combine to provide a complete protecting scenario for the motor

system, keep the motor system from possible damages and guarantee correct operations.

Block Diagram

Figure.1

Halogen Free

Power On

Reset

Chopper amplifier

Bias Generator

Hall Plate

Coil Driver

Digital control logics

Oscillator