三合微科股�½有限公司
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AM
H
OP
Microelectronics Corp.
SM3502
FAN CONTROLLER
GENERAL DESCRIPTION
SM3502 is a Fan Controller CMOS IC that
can be applied to a variety of consumer
products. SM3502 has three wind modes;
normal, rhythm and sleep-rhythm wind.
Four kinds of timer setting and one swing
head control or light control.
Memory function is available; the Speed,
Mode, Swing functions will operate as last
state in memory type. If the last state is
Sleep mode, press SPEED key enable fan
controller while memory functions will be
returned to the last state before Sleep Mode
operation.
FEATURES
* High performance CMOS technology.
* Four types of timer setting:
Ladder adder (1/2-1-2-4hrs)
Non-ladder adder (1-2-4-8hrs)
* One swing head control or light control.
* SPEED key can enable fan controller.
* 18 pin plastic DIP package.
* 455KHz oscillator.
APPLICATIONS
* Electronic Fan
* Heater Fan
* Air-Cleaner
* Dehumidifier
* Humidifier
* Kitchen Exhaust
* Dish Dryer
* Wall Fan
PIN ASSIGNMENTS
LIGHT
DI
OFF
TIMER
SPEED
MODE
COM1
COM2
COM3
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
LTO
VSS
OSC1
OSC2
BUZ
VDD
LOW
MEDIUM
STRONG
DI
OFF
TIMER
SPEED
MODE
COM1
COM2
COM3
SWING
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VSS
OSC1
OSC2
BUZ
VDD
LOW
MEDIUM
STRONG
SHO
SM3502-A
18PIN
SM3502-B
18PIN
Page 1
V.1.0
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
