SM3501 Datasheet, PDF (1/12 Pages) SamHop Microelectronics Corp. – FAN CONTROLLER

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SAMHOP Microelectronics Corp.
SM3501
FAN CONTROLLER
GENERAL DESCRIPTION
FEATURES
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.
* 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
1
18
TGO
2
17
BUZ
3
16
OSC1
4
15
OSC2
5
14
OPTION1
6
13
VDD
7
12
SPEED
8
11
TGI
9
10
SM3501
MID
STR
OPTION2
VSS
COM2
COM1
MODE
TIMER
ON-OFF/OFF
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V.2.0 Mar 8,2002