PT8A3270WEX

PT8A3270/1/2/3/4/5/6/7 ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Heating Controller Features Description  Dual Voltage (120V/240V) operations The PT8A3270/1/2/3/4/5/6/7 is a mixed signal  Auto temperature control with NTC CMOS LSI chip designed as heating controller with help  NTC open protection of external NTC (Negative Temperature Component).  Multi mode LED indicator NTC open protection is implemented for device safety.  Proportional control This device can be used in both 120V and 240V power  Pulse trigger for high current SCR line supplier, as it will automatically adjust the heating  Internal Zener power according to the power line voltage to avoid  Auto Heating off after heating timer timeout heating appliance damage or long heating time. The  Low cost 8-Pin DIP and SOIC package proportional control algorithm is designed in this product. Applications  Curler  Straightener Pin Configuration PT 8A3270/1/2/3 PT 8A3290/1/2/3 PT 8A3274/5/6/7 PT 8A3294/5/6/7 P P NTC1 1 8 VDD NTC1 1 8 VDD NTC1 NTC2 2 7 OFF NTC2 2 7 LED2 NTC2 CLK 3 6 GATE CLK 3 6 GATE CLK GND 4 5 ON GND 4 5 ON/OFF GND Pin Description Pin Name Pin No. I/O Description 3270/1/2/3 3274/5/6/7 1 NTC1 NTC1 I NTC voltage input, NTC open detection input 2 NTC2 NTC2 O Output signal for NTC open detection 3 CLK CLK I Clock input from power line 4 GND GND Power 5 ON ON_OFF I/O 6 GATE GATE O 7 OFF LED2 I/O 8 VDD VDD Power Ground and Power 3270/1/2/3: Heating-on button input. and LED1 driving output 3274/5/6/7: Heating-on/off button input and LED1 driving output 3270/1/2/3/4/5/6/7: SCR trigger output 3270/1/2/3: Heating-off button input and LED2 driving output 3274/5/6/7: LED2 driving output Ground and Power 12-07-0006 PT0257-1 1 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Block Diagram NTC1 Precise 5bit ADC OFF/TURBO/LED2 OFF/LED2 ADC GATE Controller NTC2 CLK ON/ON_OFF/LED1 Maximum Ratings Storage Temperature ................................................................................... -65oC to +150oC Supply Voltage to Ground Potential (Input & VCC Only).......................-0.5V to + 5.5V Supply Voltage to Ground Potential (Outputs)..........................................-0.5V to + 5.5V DC Input Voltage ............................................................................................-0.5V to + 5.5V 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 operation conditions Symbol Pin Parameter Min Typ Max Unit Frequency CLK Input CLK Frequency - 50/60 - Hz TA - Operating temperature -20 - 85 ℃ AC Electrical Characteristics (VDD = 3.5 ~ 5.5V, TA = -20 ~ 85ºC, unless otherwise noted) Symbol Description Test Conditions Min Type Max Unit FCLK Frequency of CLK - - 50/60 - Hz TGATE Width of trigger pulse - 160 200 240 S Timer Power off timer 1.15 1.2 1.25 Hour PT0257-1 07/06/12 FCLK= 50Hz 12-07-0006 2 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| DC Electrical Characteristics (VDD = 3.5 ~ 5.5V, TA = -20 ~ 85ºC, unless otherwise noted) Symbol Description Min Type Max Unit VIN = VDD - - 1 A PIN: NTC1 VIN = VDD - - 100 nA PIN: NTC2 VIN = VDD ,Output High impedance - - 100 nA VIN = GND - - -1 A VIN = 0.35V - - -10 A VIN = GND - - -100 nA - - -100 nA -15 - - mA 2.0 - - mA 5.0 - - mA Test Conditions PIN: CLK IIH Input high current PIN: CLK IIL Input low current PIN: NTC1 VIN = GND, Output High impedance V DD =4.5V Vout = 2.5V V DD =4.5V Vout =0.5V V DD =4.5V Vout =0.5V PIN: NTC2 IOH Output High current IOL Output Low current PIN: GATE PIN: NTC2 PIN: GATE VPOR Voltage of POR - 1.5 - 2.5 V VZ Voltage of Zener IDD= 500uA ~ 10mA 4.5 5.0 5.5 V IDD Current consumption NTC1,CLK pin tied to ground V DD = 4.5V - - 500 A 12-07-0006 PT0257-1 3 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Circuit PT8A3270/1/2/3 Application Circuit Heater L 43k(2W) 47u NTC 10k RA LED2 1M PT 8A3270/1/2/3 NTC1 VDD NTC2 OFF OFF 20k RB SCR 100 CLK GATE GND ON 0.1u ON 0.1u 0.1u 10n 8.2k 20k 0.1u 0.1u LED1 N PT8A3274/5/6/7 Application circuit Heater L 43k(2W) 47u NTC 10k RA LED2 1M PT 8A3274/5/6/7 NTC1 VDD NTC2 LED2 OFF RB SCR 100 CLK GATE GND ON_OFF ON 0.1u LED1 0.1u 0.1u 0.1u ON/OFF 10n 8.2k 20k N 12-07-0006 PT0257-1 4 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Functional Description  State description  Reset The device will be of reset state after power-on.  Heating on The device will be of heating on state after heating-on button is on  Heating off This device enter heating-off state after its power-on reset or heating timer timeout, and all pins will be the same status as after power-on reset.  NTC open protection When NTC is open, NTC1 pin will be pulled low in the period of NTC open detected.  Timer Once IC enters Heating-on State, internal timer starts to count. When time is out after 216000 clock period, it will exit heating-on state. That is, in case of 60Hz CLK signal, the heating time is about 1 hour; and 1.2 hour for 50Hz. In heating-on state, temperature is regulated to the selected temperature by the IC through NTC close control loop.  Control signal output When working in Heating-on state, Gate/LED output will be related to NTC1 input and CLK input amplitude. Effect of NTC and VTCLK (Level 2) on GATE and LED indication Workin g State CLK input voltage NTC (NTC open detection) NTC (Normal temp detection) GATE (trigger to SCR/TRIAC) LED LED1 LED2 3270/2/4/6 3270/2/4/6 0 ~ VADC_BIT15 Flash1* Proportional High for V ADC_BIT14 ~ output On level 2 V ADC_BIT1 (240V) V ADC_BIT1 ~ 0 On VDD ON V NTCO~ 0 ~ VADC_BIT15 Flash1 Invert of VDD Proportional LED1 Low for V ADC_BIT14 ~ output On level 2 V ADC_BIT1 (120V) V ADC_BIT1 ~ 0 On VDD Off X* X 0 Off X X 0~V NTCO X 0 Flash2* *Note: 1) X means any input. 2) Flash1 frequency is 1/32 clock. 3) Flash2 frequency is 1/8 clock 12-07-0006 LED1 LED2 3271/3/5/7 On 3271/3/5/7 Off On On On On On Off On On On On Off Flash2* Off Off PT0257-1 5 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Information PE (DIP-8) Symbol A A1 A2 B B1 c D E E1 e L E2 Note: 1) Controlling dimensions in millimeters. 2) Ref : JEDEC MS-001D/BA 12-07-0006 Dimensions In Millimeters Min Max 3.710 4.310 0.510 3.200 3.600 0.380 0.570 1.524 BSC 0.204 0.360 9.000 9.400 6.200 6.600 7.320 7.920 2.540 BSC 3.000 3.600 8.400 9.000 PT0257-1 6 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| WE (SOIC-8) Symbol A A1 A2 b c D E E1 e L θ Note: 1) Controlling dimensions in millimeters. 2) Ref : JEDEC MS-012E/AA 12-07-0006 Dimensions In Millimeters Min Max 1.350 1.750 0.100 0.250 1.350 1.550 0.330 0.510 0.170 0.250 4.700 5.100 3.800 4.000 5.800 6.200 1.27 BSC 0.400 1.270 0° 8° PT0257-1 7 07/06/12 PT8A3270/1/2/3/4/5/6/7 Heating Controller ||||||||||||||||||||||||||||||||||||||||||||||||||| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Ordering Information Part No. Package Code Package PT8A327xPE P Lead free 8-Pin DIP PT8A327xWE W Lead free and Green 8-Pin SOIC Note:  “x” shows 0~7 with different function see Function Comparison Table.  E = Pb-free or Pb-free & Green  Adding X Suffix= Tape/Reel Function Comparison Table Part number LED Timer Switch Driver PT8A3270 Flash Y Two Key (ON + OFF) SCR PT8A3271* Constant Y Two Key (ON + OFF) SCR PT8A3272* Flash N Two Key (ON + OFF) SCR PT8A3273* Constant N Two Key (ON + OFF) SCR PT8A3274 Flash Y One key (ON_OFF) SCR PT8A3275 Constant Y One key (ON_OFF) SCR PT8A3276* Flash N One key (ON_OFF) SCR PT8A3277* Constant N One key (ON_OFF) SCR Note:  *Contact Pericom for availability. Pericom Semiconductor Corporation  1-800-435-2336  www.pericom.com Pericom 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 does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom. 12-07-0006 PT0257-1 8 07/06/12