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

：2

Pin Assignment

Pin NO.

Pin Name

Description

1

VDD

Power supply pin

2

O1

Output pin for driving power NPN

3

O2

Output pin for driving power NPN

4

FGR

Output pin of fan frequency (open-drain)

FG

: ST1114C

(The frequency is same with the HIN frequency. )

FG/2 : ST1114L

(the frequency is the half HIN frequency.)

RD

: ST1114M

(rotation detection)

5

GND

Ground pin

6

HIN

Input pin from Hall Latch IC

Features and Benefits

Pre-driver for 2-phase, half-wave Brushless DC motor applications

Suitable for 3V ~ 48V fan applications with less external components

Wide operating voltage (1.8V ~16V)

Lock detection and automatic self-restart

Larger operating voltage range.

FG output for ST1114C, FG/2 output for ST1114L, RD output for ST1114M

Thin, highly reliable package (SOT-26)

O1

VDD

O2

GND

HIN

FGR