三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER GENERAL DESCRIPTION FEATURES 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. * 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 PIN ASSIGNMENTS * Electronic Fan * Heater Fan * Air-Cleaner * Dehumidifier * Humidifier * Kitchen Exhaust * Dish Dryer * Wall Fan 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 SM3502-A 18PIN Page 1 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-B 18PIN V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER PANEL DISPLAY 4HR 2HR 1HR 1/2HR S M L OFF (8HR) (4HR) (2HR) (1HR) ON/SPEED TIMER SLP-RHY RHY NOR SHO/LTO MODE SW/LIGHT SM3502 BLOCK DIAGRAM VDD BUZ VSS BUZZER DI REMOTE CONTROL DECODER OSC1 OSCILLATOR OSC2 OFF FAN FUNCTIONS CONTROL SPEED SPEED/MODE/TIMER/MEMORY TIMER MODE STRONG KEY INPUT SPEED LED OUTPUT OUTPUT SCAN_SIGNAL DRIVER MEDIUM COM1 ROM COM2 LOW TIMER COM3 SWING LIGHT SWING/LIGHT CONTROL SHO SYSTEM TIMING GENERATOR ZERO_CROSS LTO Page 2 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER PIN DESCRIPTIONS No. Pin Name I/O Function 1 LIGHT I Light control input 2 DI I Remote control input 3 OFF I/O Off function control input 4 TIMER I/O Timer setting input 5 SPEED I/O Wind grade selection input 6 MODE I/O Wind mode selection input 7 COM1 O LED scanning common pin / Customer code 8 COM2 O LED scanning common pin / Customer code 9 COM3 O LED scanning common pin 10 SWING I Swing head control input / Customer code 11 SHO O Swing head / tuner pulse output 12 STRONG O Wind speed control output 13 MEDIUM O Wind speed control output 14 LOW O Wind speed control output 15 VDD POWER Positive power supply 16 BUZ O Trigger output to drive piezo 17 OSC2 O Crystal output 18 OSC1 I Crystal input 19 VSS POWER Negative power supply (Substrate) 20 LTO O Light control output Page 3 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER FUNCTION DESCRIPTION SM3502 has FIVE control signal operations : * Start-up by SPEED key a. function turn off (OFF key) b. wind mode selection (MODE key) c. start-up function and wind speed selection(SPEED key) d. timer setting (TIMER key) e. swing head or light control (SW or LIGHT Key) Only SPEED key can enable the fan controller, except for the light control. Wind mode, timer and swing head inputs can not be accepted when fa by timer and OFF key inputs. When more than one key are pressed, controller will not accept the multi-key's control signal, if the panel keys are pressed more than six seconds, controller will generate a " BI-BI-BI-BI" warning sound. When fan is enabled by SPEED key, the initial state of fan controller is as follows: * Memory function available If Fan controller is OFF on sleep mode, all memory functions will be returned to the LAST STATE BEFORE SLEEP MDOE operation. a. Grade as last state but with starting medium wind for three seconds b. The wind mode as last state except sleep mode c. Swing function as last state d. Timer setting off e. Light is independent A. OFF KEY When fan controller is on, press the OFF key, fan functions will be off except light output. B. SPEED KEY When fan control is off, press SPEED key, fan is turned on, initial state is LOW wind; when memory function is available, the wind grade will operate as last state. Both conditions have three seconds starting wind. Press the SPEED key again, the wind will be changed as follows : OFF LOW MEDIUM STRONG SPEED key used Pulse is put into OFF pin Page 4 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER C. MODE KEY SM3502 has three types of wind mode: normal, rhythm, sleep + rhythm. Memory function is available except on sleep mode. 1. OFF NOR RHY SLP-RHY : Press MODE key: normal setting : Pulse is put into OFF pin : SPEED key used D. LIGHTING CONTROL KEY The LIGHT key is independent and the output is toggle function. When the LIGHT key is pressed on panel, operation is as follows : OFF Light output key : Press LIGHT key E. SWING KEY: The swing key will not activate when fan controller is off. Memory function is available, the swing output will operate as last state when press SPEED. OFF SHO enable (Right / Left) The SW key pressed Page 5 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER F. TIMER KEY SETTING SM3502 has many types of timer setting, mode "1" is ladder-adder and mode "2" is non-ladder adder for four steps. Timer key will not activate when fan controller is off. These types of timer may be chosen by bonding option. MODE "2": Timer with non-accumulation MODE "1": Timer with accumulation LED display Timer Setting 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 Four-steps Type A*1 A*2 A*3 A*4 LED display Timer Setting. 1 2 4 8 Four-steps Type A B C D G. MEMORY FUNCTION When memory function is available, wind speed, mode and swing functions will operate as last state; if last state is sleep mode, press SPEED key enable fan controller while memory functions(Speed/Mode/Swing) will be returned to the last state before sleep mode operation. H. STARTING WIND Fan controller starts with three seconds starting wind (Medium wind). Page 6 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER I. BUZZER Any key pressed on panel which will generate a 4KHz 50% duty cycle pulse train on buzzer output pin. a. When FAN is from stop mode to start mode (press SPEED key) Buzzer output will generate a "BI-BI" sound. a b c b. When FAN is from start mode to stop mode (press OFF key) Buzzer output will generate a long "BI" sound. d c. When FAN is operating (press any key other than OFF key) Buzzer output will generate a "BI" sound. e When a = c = e = 62ms b = 124ms d = 250ms Page 7 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER J. RHYTHM WIND FUNCTION S M L 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 60 62.5 65 67.5 70 72.5 75 77.5 80 (SEC) STRONG RHYTHM WIND PATTERN S M L 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 60 62.5 65 67.5 70 72.5 75 77.5 80 (SEC) MEDIUM RHYTHM WIND PATTERN S M L 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 60 62.5 65 67.5 70 72.5 75 77.5 80 (SEC) LOW RHYTHM WIND PATTERN K. SLEEP FUNCTION In sleep mode, wind grade is changed by timing automatically and the wind grade goes down automatically one step every 0.5hrs, until low wind level is reached.. S M L Strong Wind Medium Wind 0.5HRS Low Wind 1HRS Page 8 TIME V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER TIMING CONTROL Speed Key Off Key t key Buz t buz Low Medium 3 sec. Strong Mode Key t key Normal Rhythm Sleep Off Key t key Fan Enable * NOTE: tbuz see page 12 and tkey see page 6 Page 9 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER DC ELECTRICAL CHARACTERISTICS Parameter Symbol Supply Voltage VDD Test Conditions Min. 3 Limits Typ. Max. 5 OSC stop all output pins open all input fixed to VDD Unit 6 V 500 uA Stand-by Current ISB Input High Level VIH Input Low Level VIL Sink Current (OFF,MODE,SPEED TIMER,SLEEP) IOL VOL=+0.7V 10 mA Source Current (OFF,MODE,SPEED TIMER,SLEEP) IOH VOH=+4.3V 10 mA Triac Sink Current (S,M,L,SW1, SW2,LIGHT) IOL VOL=+0.7V 10 mA Triac Source Current (S,M,L,SW1, SW2,LIGHT) IOH VOH=+4.3V 5 mA Sink Current (COM1~COM3) IOL VOL=+0.7V 40 mA Source Current (COM1~COM3) IOH VOH=+4.3V 10 mA Sink Current (BUZ) IOL VOL=+0.7V 4 mA Source Current (BUZ) IOH VOH=+4.3V 5 mA Pull-high Resister (Input pin) RPH 200 K OHM 3.5 V 1.5 V *NOTE: All test conditions are on VDD = 5V / VSS = GND Page 10 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage Test conditions Ratings Unit VDD-VSS -0.3~6 V Input Voltage Vi-VSS VSS-0.3~VDD+0.3 V Output Voltage Vo-VSS VSS-0.3~VDD+0.3 V Maximum Power Consumption Pa 500 mW Operating Temperature Topr -10~70 C Storage Temperature Tstg -40~125 C VDD-VSS=5V SM3502 POWER SUPPLY APPLICATION CIRCUIT 47 Ω / 0.25W 100K/1W 1A 47Ω /1W 110V AC INPUT 1N4004 3.3uF/250V 1N4004 220uF 16V 47 Ω / 0.25W 5.1V 0.5W VSS/-5.1V 470uF 16V GND 1A 220V AC INPUT 180 Ω / 1W 200K / 1W 180 Ω / 1W 1.2uF / 400V 1N4004 47 Ω / 0.25W 1N4004 220uF 16V 47 Ω / 0.25W 5.1V 0.5W VSS/-5.1V 470uF 16V GND Page 11 V.1.0 三合微科股份有限公司 SM3502 SAMHOP Microelectronics Corp. FAN CONTROLLER ORDERING INFORMATION Logo Product No. A: A Type B: B Type 1: Timer Setting-Ladder Adder 2: Timer Setting-Shift SM3502 - A X XXX XX Serial Number Date Code ESD Protection Mark Page 13 V.1.0