點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

ST1114C / ST1114L / ST1114M

SP-ST1114CLM-A.008

Version

：A.008

Page

：1

ST1114C / ST1114L / ST1114M

Double Coil Brushless

DC Motor Predriver

General Specifications

These pre-driver devices are designed specifically for electronic commutation of double coil

DC motor applications.

Each device is intended to be as an interface between a HALL IC

and the drivers for larger double coil load.

The main functions built-in devices are such as

lock protection, automatic restart and frequency generating or rotation detecting output.

The output node “O1/O2” control the external drivers of double coil loads. The node “O1”

turns on the output current when V(HIN) is logic low.

Similarly, the node “O2” turns on the

output current when V(HIN) is logic high.

Each device incorporates lock detection circuit to shut down the drivers.

After the motor

locking is released, the IC will turn on external drivers by automatic self-restart circuit.

The

device will shut down drivers roughly 1 to 3 seconds after the motor is locked and the

automatic self-restart circuit will try to power up the drivers about 250ms per 1 to 3 seconds.