三合微科股�½有限公司
S
AM
H
OP
Microelectronics Corp.
SM3501
FAN CONTROLLER
GENERAL DESCRIPTION
SM3501 is a Fan Controller CMOS IC, has
three wind modes; normal, rhythm and sleep
wind. Four kinds of timer setting and a
toggled O/P that can be used as swing/light.
Memory function is available; the Speed,
Mode, Swing functions will operate as last
state; if last state is Sleep mode, press
SPEED or ON/OFF key enable fan controller
while memory functions( Speed / Mode
/ Swing ) will be returned to the last state
before sleep mode operation.
FEATURES
* High performance CMOS technology
* 455KHz or RC type can be selected.
* Two to three wind modes can be selected.
Normal, Rhythm and Sleep wind mode.
* Three-wind grade control in each wind mode:
Low, Medium and Strong wind.
* Four types of timer setting by PIN option:
ladder adder
(1/2 - 1 - 2 - 4 - 8HRS / 1 - 2 - 4HRS)
non-ladder adder
(1 - 2 - 4 - 8HRS / 1 - 2 - 4HRS)
* SPEED or ON/OFF key can enable fan
controller by PIN option
APPLICATIONS
* Electronic Fan
* Heater Fan
PIN ASSIGNMENT
LOW
TGO
BUZ
OSC1
OSC2
OPTION1
VDD
SPEED
TGI
1
2
3
4
5
6
7
8
9
SM3501
18
17
16
15
14
13
12
11
10
MID
STR
OPTION2
VSS
COM2
COM1
MODE
TIMER
ON-OFF/OFF
Page 1
V.2.0 Mar 8,2002
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
