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WT8072
CONTROLLER
information this document subject change without notice. Weltrend Semiconductor, Inc. Rights Reserved.
Industry RD., Science-Based Industrial Park, Hsin-Chu, Taiwan TEL:886-3-5780241 FAX:886-3-5794278.5770419 Email:support@weltrend.com.tw
WT8072
CONTROLLER GENERAL DESCRIPTION
8072 (passive infra-red) controller, using analog mixing digital design technique manufactures CMOS process which either drive TRIAC RELAY depending users' choice. With special noise immunity technique, WT8072 most stable controller find market. More than this, there components needed application circuit which reduce material cost increase competitive.
FEATURES
*HIGH NOISE IMMUNITY. *DRIVE EITHER RELAY TRIAC. *ADJUSTABLE LIGHT DURATION. *TRIAC EITHER SHUNT SERIAL CONNECTED. *PIR INPUT. *CDS INPUT.
CONFIGURATION
DESCRIPTION
Name Description UOU1 First stage output First stage positive input First stage negative input VREF Stable reference voltage System ground Time base delay time receiving singnal sent puls trigger TRIAC high signal trigger relay. delay time signal patented accepted only signal cycle greater than .When state relay TRIAC changing form active into inactive mode. takes more than 4069, then system able receive signal again. 2.The flash cycle show beginning auto mode. Note: Width TRIAC pulse Flash cycle: 32768 100pF (Reference Diagram QTEST testing only
Weltrend Semiconductor, Inc.
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WT8072
CONTROLLER
timing long Triac relay active. During period, system receives signal, then restarts counting timing again. range 100uF< (Reference Diagram Connected inhibiting relay TRIAC being triggered. TRIAC relay already being triggered signal turned into active mode, then inhibit again. trigger TRIAC, active Sink current: max. drive relay, active high Sink current: max. Source current: max. Detect zero cross line under remote mode function. Operation voltage: stand current: stage negative input stage positive input stage output
TRIAC RELAY NII2 UOU2
DIAGRAM
Weltrend Semiconductor, Inc.
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WT8072
CONTROLLER Absolute Maximum Ratings
Parameter POWER SUPPLY WITH REPECT VOLTAGE OPERATING TEMPERATURE STORAGE TEMPERATURE SYMBOL Vdd-Vss VALUE -0.3-5.6 0-70 -65-150 Units
ELECTRICAL CHARACTERISTICS
Symbol Parameter SUPPLY VOLTAGE STANDY CURRENT OPERATING CURRENT Vref Iref STABLE VOLTAGE SOURCE CURRENT Vref RIPPLE Vref INPUT OUTPUT REGULATION Vref TIME BASE OPERATING FREQUENCY OPERATING TRIGGER Condition Min. Typ. Max. 0.3% 11.6 0.03 0.08 37.8 10.4 17.4 1290 14.9 11170 18.8 Unit Sec.
1.8mA, TRIAC 2.5mA, RELAY Vdd>4.2V
VtCDS OPREATING TRIGGER Icds SOURCE CURRENT Isource OUTPUT SOURCE CURRENT Isink OUTPUT SINK CURRENT Tout1 TIMER DURATION C=0.001uF R=4.7K-1M C=0.01uF R=4.7K-1M C=100uF R=4.7K-1M C=0.1uF R=4.7K-1M RELAY SOURCE CURRENT Irsink RELAY SINK CURRENT RELAY OPERATING VOLTAGE 18.8V: RELAY 13.1V: RELAY Itsink TRIAC SINK CURRENT Itsource TRIAC SOURCE CURRENT
13.1
Weltrend Semiconductor, Inc.
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WT8072
CONTROLLER
TYPICAL APPLICATION
HOME SECURITY SYSTEM. AUTO LIGHT SYSTEM GARDEN, GARAGE, HALLWAY, STAIRCASE, PORCH, BATHROM, ETC. AUTO SWITCH VENTILATION FAN. AUTO NOTICE SYSTEM OFFICE, STORAGE, ETC.
ORDERING INFORMATION Ordering Number WT8072 WT8072H Package Type P-DIP CHIP FORM
Weltrend Semiconductor, Inc.
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WT8072
CONTROLLER
Weltrend Semiconductor, Inc.
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