點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

FD212

SP-FD212-A.003

Version

：A.003

Page

：1

11-FD212

Single Coil Brushless DC

Motor Drivers Built-in Hall Sensor ( 2 to 5.5 Volts)

General Specifications

The device is designed specifically for electronic commutation of single coil DC

motor applications. Each device includes a HALL sensor, a frequency generator

output, a lock detection circuit to shut down the drivers for overheat prevention,

and complementary bi-directional drivers for driving and sinking large load on a

single silicon chip.

If the motor rotation is stalled by external force or obstacles, overdrive current

( or lock current ) may incur coil overheat/burning.

To prevent coil

overheat/burning, these devices incorporate lock detection circuit to shut down

the drivers.

After the motor locking is released, the drivers can be powered up

using an automatic self-restart circuit.

The drivers are shut down roughly 1 to 3

seconds after the motor is locked. After the drivers are shut down, the automatic

self-restart circuit will try to power up the drivers every 1 to 3 seconds.