Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features • General Description Dual Volatge (110V/220V) operation The PT8A320P adopts counter to turn off power • Auto temperature control with NTC automatically. It produces different frequency pulses. • Multi mode LED indicator This device provides three functions: • Direct drive SC - Reset state: All input terminals are inactive and • Low cost 8-pin DIP package output terminals output 0V. Applications - Timer: Timer begins working after get a starting signal. • Hair Curler - Controllable signal output: According to NTC and LEVEL signal input, GATE and LED terminal will output pulse with different frequency or DC signal. Block Diagram Vcc Timer CLK GND fCLK NTC A/D Controller GATE LED LEVEL PB PT0092(08/02) Input Pulse Detector 1 Ver:1 Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Assignment Figure 2 1 NTC 2 CLK 3 GND 4 PT8A320P PB 8 Vcc 7 LED 6 GATE 5 LEVEL Top view Pin Description P in Na me Typ e Descr ip t ion 1 PB I Device switch-on (positive pulse lasting at least 12 cycles of clock), and switch-off (negative pulse lasting at least 12 cycles of clock) terminal 2 NTC I Temperature sensor interface terminal 3 CLK I Clock signal input 4 GND 5 LEVEL I Terminal for sensing AC power line 6 GATE O SCR trigger output 7 LED O Drive LED on or off 8 VCC Power Ground Ground Power supply Functional Description · Controllable signal output Under normal power supply, when no signal fed in PB, PB is in the state of positive pulse with fCLK/4 frequency. After PB was fed high voltage for lasting time at least 12´(1/fCLK), the device goes into working state. See following table. · Reset state After or during reset, all input terminals are inactive and output terminals output 0V. Three cases will make the device into the state: - Power on. - Timer overflow. - PB was set low lasting at least 12 clock cycles. · Timer Timer part counts CLK signal. When the counting number reaches about 216000, the device will be set into reset state. For example, in case of 60Hz CLK signal, the working time is about 1 hour; and 1.2 hour for 50Hz. PT0092(08/02) NTC LEVEL 0 ~ V1 L H L H / V1 ~ V2 V2 ~ VCC 2 GATE VCC Positive pulse (f = 1/4fCLK) Positive pulse (f = 1/2fCLK) Positive pulse (f = 1/8fCLK) 0V Ver:1 Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested) Note: Storage Temperature ........................................................ -25oC to +85oC Stresses greater than those listed under MAXIMUM Ambient Temperature with Power Applied .................. -10 oC to +70 oC RATINGS may cause permanent damage to the Supply Voltage to Ground Potential (Inputs & VCC Only) .... -0.5 to +5.5V device. This is a stress rating only and functional Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5 to +5.5V operation of the device at these or any other condiDC Input Voltage ................................................................ -0.5 to +5.5V tions above those indicated in the operational secDC Output Current ........................................................................ 20mA tions of this specification is not implied. Exposure Power Dissipation ....................................................................... 500mW to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operation Conditions Sym Descr ip t ion P in Min Typ Ma x Un it s VCC Supply Voltage VCC 3.5 4.0 5.0 V VIH Input High Voltage 0.7VCC - VCC V VIL Input Low Voltage 0 - 0.3VCC V fCLK Input Clock Frequency 40 50 100 Hz TA Operation Temperature -10 - 70 PT0092(08/02) CLK, PB CLK 3 o C Ver:1 Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| DC Electrical Characteristics Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s Input high current - NTC, CLK, LEVEL pins VIN = VCC - - 10 µΑ Input high current - PB pin VIN = VCC - 40 100 µΑ Input low current - NTC, CLK, LEVEL pins VIN = GND - - -10 µΑ Input low current - PB pin VIN = GND - -40 -100 µΑ IOH Output High Voltage VCC = 4.0V, Vout = 3.5V -1.5 - - mA IOL Output Low Voltage VCC = 4.0V, Vout = 0.5V 1.5 - - mA VIH Upper trigger voltage input - CLK, PB pin - 0.7VCC - - V VIL Lower trigger voltage input - CLK, PB pin - - - 0.3VCC V VLEVELL Input low voltage - LEVEL pin - 0 - 0.46VCC V VLEVELH Input high voltage - LEVEL pin - 0.42VCC - VCC V VNTCL Input low voltage range - NTC pin - - - 0.34VCC V VNTCM Input middle voltage range - NTC pin - 0.30VCC 0.43VCC V VNTCH Input high voltage range - NTC pin - 0.39VCC - VCC V ICC Current consumption VCC = 4.5V, all inputs set to GND - 150 800 µΑ IIH IIL1 AC Electrical Characteristics Sym Descr ip t ion Test C on d it ion s Min Typ Ma x Un it s fCLK Frequency VCC = 4.5V 10 50 100k Hz Timer Power off Timer fCLK = 50Hz 1.15 1.2 1.25 Hour PT0092(08/02) 4 Ver:1 Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| LEVEL GATE Heater V cc LED 3.4k 200k 1M 24k 10k 10u 0.1u SCR Application Circuit 10k 11k 220/110 AC 470k 750k 0.1u 43k(1W) 4V 47u Temperature sensor 10k OFF ON 10k 0.1u GND CLK PB NTC PT8A320P PT0092(08/02) 5 Ver:1 Data Sheet PT8A320 Dual Voltage Heat Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] Web Site: www.pti.com.cn, www.pti-ic.com China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 U.S.A.: 2380 Bering Drive, San Jose, California 95131, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100 Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0092(08/02) 6 Ver:1