PT8A3511WEX

Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features Description • Build in RC oscillator for sensor signal detection • On chip shunt regulated power supply • Using AC 60Hz(PT8A3511)/50Hz(PT8A3512) as timer clock set by user • Accurate timer with error dropping in ±1% • Sensitive movement detection • Powerful immunity of sensor Vibration • 30s time out for IRON in static horizontal position The PT8A3511/12 are high performance low power and low cost CMOS chips designed for intelligent electric IRON controller. Their intelligence mainly results from their sensitive detection to the movement and static position of electric iron by using a special sensor. With the sensor, these chips can detect the vertical/horizontal position and movement status of IRON. • 8min time out for IRON in static vertical position • LED to indicate operation status • Usable in both 120V and 240V voltage supply system • Quick function test mode • Few external components • Lead free DIP-8 and SOIC-8 package These chips are equipped with on-chip shunt regulator, sensor signal processor, build-in oscillator, timer, logic control, power on reset and output driving block etc. Application • Ordering Information Part Number PT8A3511PE PT8A3512PE PT8A3511WE PT8A3512WE Electric Iron Controller Function comparison table Part No PT8A3511 PT8A3512 Package Lead free DIP-8 Lead free DIP-8 Lead free SOIC-8 Lead free SOIC-8 Clock Frequency 60 Hz 50 Hz Block Diagram VCC sensor SW VCC Power On sensor signal processor GND Re se t Re layA Logic control Circuit LED Mode 30s/8min Timer System Oscillator DISC ACCLK PT8A3511/12 PS8A0102DE Function Block Diagram PT0228 (10/06) Ver: 1 1 Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pad Assignment DISC RELAYA 1 8 VCC 2 7 ACCLK PT8A351X LED 3 6 SW GND 4 5 MODE Pad Description Pin No. Pin Name I/O Description 1 2 DISC RELAYA O O 3 LED O 4 GND - Discharge the external electrolytical cap to stabilize and limit its voltage. Relay drive output, active high. With open drain output, it can shut off external LED in parallel with this open-drain transistor, active low. Ground. 5 MODE I Test mode select pin, internal pull up. 6 SW I Sensor signal input, internal pull up. 7 8 ACCLK VCC I - AC 60/50Hz signal for clock with schmitter architecture. Power supply. Functional Description (Refer to Block Diagram) Here, we use a unique structure to do the high-requirement signal processing. The chip is comprised of several blocks: on-chip shunt regulator, sensor signal processor, build-in system oscillator, DPLL, 30s/8min timer, logic control circuit, and power on reset, etc. Each block will be described as below. In real application of IRON, sensor firstly needs to be installed according to certain requirements (for example its inclination). Logic control circuit Timer Logic control circuit mainly carries out logic control function. It not only collects signals from other blocks, but also generates various driving signals including RELAYA&DISC. Besides, an external LED will flash at about 4Hz after internal timer times out. Signals at RELAYA will control external relay to decide whether IRON heats or not. Timer block mainly generates various timing signal according to the position of IRON. It is easy to get accurate timer (30s/8min) by using AC 60Hz for PT8A3511 and 50Hz for PT8A3512 signal as timing reference. As above description, Iron in Horizontal position over 30s will stop heating. While Iron in vertical position over 8min will also stop heating. Sensor signal processor The core in the whole system is how to correctly detect the position and movement of sensor so that the system can be always under safe control. Thus, it is critical to accurately and correctly deal with signal from sensor in different status and eliminate the noise caused by debounce action from sensor. LED During heating, LED pin is floating and an external LED will turn on. After times out, LED pin outputs pulse and an external LED will flash at about 4Hz. PT0228 (10/06) Ver: 1 2 Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Maximum Rating Storage Temperature………………………………………… - 40oC to +125oC Supply Voltage to Ground Potential (Inputs & VCC only)….. - 0.5 to VCC +0.5V Supply Voltage to Ground Potential (Outputs & D/O only)... - 0.5 to VCC +0.5V DC Input Voltage …………………………………………...- 0.5V to VCC +0.5V DC Output Current ………………………………………………………..20mA Power Dissipation………………………………………………………..500mW Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operating Conditions Symbol Description Min Typical Max Unit VCC Supply voltage 4.5 5 5.5 V TA Operating Temperature -10 25 85 °C Electrical Characteristics (TA = -10 ~ 85ºC, unless otherwise noted) Symbol Parameter VCC IIL IOH1 IOL1 IOL2 ICC Internal shunt regulator voltage Input low current (SW) Output Source Current (RELAYA /Disc) Output Sink Current (RELAYA/DISC) Output Sink Current (LED) Power supply current Test Condition Conditions VCC 5V VIL=0V 5V VOH1=2.5V 5V VOL1=0.5V 5V VOL2=0.5V 4V ACCLK=VCC PT0228 (10/06) Min Typ Max Unit 4.5 -30 -0.3 0.5 10 - 5 - 5.5 -100 -1 400 V µA mA mA mA µA Ver: 1 3 Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Circuit Note: Suggest the parameter of relay meet the following specification: 24VDC, 1.6KΩ Coil resistance R1 R2 12K 15K D1 R4 100K 1N4007 22uF/16V D2 1N4148 RELAY 24V 240VAC 50Hz C3 104 C2 R3 10K 2N5551 Q2 2N5551 Q1 C1 10uF/100V 1 DISC 2 7 ACCLK LED 4 8 VCC RELAYA 3 LED R5 1M IC PT8A3511/12 PT8A3512/PS8A0102A 6 SW GND C4 R6 103 33K 5 MODE SENSOR Figure 1 Typical Application Circuit of PT8A3511/12 240V R1 6.8K D1 R3 100K 1N4007 C2 120VAC 60Hz R2 10K C3 104 22uF/16V D2 1N4148 RELAY 24V 2N5551 Q2 C1 2N5551 Q1 10uF/100V 1 2 3 LED 4 IC PT8A3511/12 PT8A3511/PS8A0102B DISC RELAYA LED GND VCC ACCLK SW MODE R4 510K 8 7 6 5 R5 C4 33K 103 SENSOR Figure 2 Typical Application Circuit of PT8A3511/12 120V PT0228 (10/06) Ver: 1 4 Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Information PE (DIP-8) 8 .240 .280 1 6.09 7.11 .355 .400 7.62 8.25 9.01 10.16 .300 .325 .210 Max 5.33 .008 .014 SEATING PLANE 0.20 0.35 .015 Min .115 .150 2.921 3.81 .100 typical 2.54 .014 .022 0.381 X.XX X.XX .356 .558 0O 15o .430 Max 10.92 DENOTES DIMENSIONS IN MILLIMETERS Note: 1) Controlling dimensions in inches. 2) Ref: JEDEC MS-001 BA PT0228 (10/06) Ver: 1 5 Data Sheet PT8A3511/12 Smart Iron Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| WE (SOIC-8) 8 .149 3.78 .157 3.99 .0099 0.25 x 45o .0196 0.50 1 .189 4.80 .196 5.00 .016 .026 0.406 0.660 REF .050 BSC 1.27 .0075 0.19 .0098 0.25 0-8o 0.40 .016 1.27 .050 .2284 .2440 5.80 6.20 .053 1.35 .068 1.75 SEATING PLANE .0040 0.10 .0098 0.25 X.XX X.XX .013 0.330 .020 0.508 DENOTES DIMENSIONS IN MILLIMETERS Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC MS-012 AA PT0228 (10/06) Ver: 1 6