PT8A3240 PERICOM | Alldatasheet

Document overview

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Technical content

Features

 Dual Voltage (120V/240V) operations  Auto temperature control with NTC  NTC open protection  Multi mode LED indicator  Direct drive SCR  Auto Heating off after heating timer timeout  Low cost 8-Pin DIP and SOIC package

Applications

 Hair Curler

Description

The PT8A3240/1/2/3/14/5/6/7 is a mixed signal CMOS LSI chip designed for the automatic controller of heat with external NTC (Negative Temperature Component). NTC open protection is implemented for device safety. When NTC is open, it will cut off GATE output to disable heating, and the LED1 will flash at 1/8 CLK. The device can be used in both 120V and 240V power line supplier, automatically adjusting the heating power according to the power line voltage to avoid heating appliance damage. Pin Configuration N TC1 N TC2 C LK G ND ON G ATE O FF V DD1 4 5 IC01-P10/1/2/3 N TC1 N TC2 C LK G ND O N/O FF G ATE LED V DD1 4 5 IC01-14/5/6/7 Pin Description No. Pin Name I/O Description PT8A324 0/1/2/3 PT8A324 4/5/6/7 PT8A324 0/1/2/3 PT8A324 4/5/6/7 1 NTC1 NTC1 I I NTC voltage input, NTC open detection input. 2 NTC2 NTC2 O O Output signal for NTC open detection. 3 CLK CLK I I Clock input from power line. 4 GND GND GND GND Ground.

5 ON ON/OFF I/O I/O Heating-on button input for PT8A3240/1/2/3 or Heating-

on/off input for PT8A3244/5/6/7 and LED driving output. 6 GATE GATE O O SCR trigger output, active high.

7 OFF LED I/O O

Heating-off button input and LED2 driving output for PT8A3240/1/2/3 or only LED2 driving output for PT8A3244/5/6/7. 8 VDD VDD Power Power Power. PT8A3244/5/6/7 PT8A3240/1/2/3

12-07-0006 PT0217 -5 07/06/12 Heating Controller Part No Option Part No. LED@ Heating on Timer of Auto power off (1h@60Hz) Control Keys PT8A3240 Flash Y Two Keys PT8A3241 Constant Y Two Keys PT8A3242 Flash N Two Keys PT8A3243 Constant N Two Keys PT8A3244 Flash Y Single Key PT8A3245 Constant Y Single Key PT8A3246 Flash N Single Key PT8A3247 Constant N Single Key Block Diagram 2bit ADC Controller NTC 2 NTC 1 CLK GATE OF F (LED) ON (ON/OF F )

12-07-0006 PT0217 -5 07/06/12 Heating Controller Function Description State description Reset: The device will be at reset state after power-on. Heating-on: The device will be at heating-on state after heating-on button is pressed. Heating-off: This device enters heating-off state after its power-on reset or heating timer timeout or heating-off button pressed. Timer Once the device enters Heating-on state, internal timer start counting. It reaches timeout state and e xit heating-on state after 216000 clock period, that is, the heating time is about 1 hour for 60Hz CLK signal, and 1.2 hour for 50Hz. Control signal output When working in Heating-on state, GATE/LED output will be related to NTC input and CLK input amp litude. Effect of NTC and CLK input voltage on GATE and LED indication Working state Power line voltage NTC (NTC open detection) NTC (normal temp detection) GATE （Trigger of SCR） LED （Pin 5） PT8A3240/2/4/6 PT8A3241/3/5/7 VNTC up VNTC down ON 220V NTC<10M(O hm) 0 ~ VNTC0 25% Flash1* Flash1 On V NTC0 ~ V NTC1 12.5% Flash1 Flash1 On V NTC1 ~ V NTC2 On V NTC2 ~ VDD 0 On On On 110V 0 ~ VNTC0 100% Flash1 Flash1 On V NTC0 ~ V NTC1 50% Flash1 Flash1 On V NTC1 ~ V NTC2 On V NTC2 ~ VDD 0 On On On OFF X* X 0 Off Off Off X X NTC>20M(O hm) X 0 Flash2* Off Off *Note：1）X means any input. 2）Flash1 frequency if 1/32 CLK. 3）Flash2 frequency is 1/8 CLK. 4）LED2(Pin 7)is always in reverse with LED1.

12-07-0006 PT0217 -5 07/06/12 Heating Controller Maximum Ratings Ambient Temperature with Power Applied……………………-20 oC to +85 oC Supply Voltage to Ground Potential (Inputs & VCC only)……….- 0.5 to +6.0V Supply Voltage to Ground Potential (Outputs & D/O only) …… - 0.5 to +6.0V Recommended Operation Conditions Sym Pin Description Min Typ Max Unit VCC VDD Supply voltage. 3.5 5.0 5.5 V fCLK CLK Input clock frequency - 50/60 - Hz TA - Operation temperature -20 - 85 C (Unless otherwise noted, VCC = 3.5 ~ 5V, TA = -20 ~ 85º C) Sym Description Test conditions Min Typ Max Unit IIH Input high current PIN: NTC1, CLK VIN = VCC - - 5 A PIN: NTC2 VIN = VCC Output high impedance - - 5 A IIL Input low current PIN: NTC1, CLK VIN = GND - - -5 A PIN: NTC2 VIN = 0 Output high impedance - - -5 A IOH Output high current PIN: GATE VCC = 5.0V Vout = 4.5V -1.5 - - mA IOL Output low current PIN: NTC2 VCC = 5.0V Vout =0.5V 2.0 - - mA PIN: GATE 2.5 - - mA VNTC0 Input voltage 0 PIN: NTC1 0.37VCC 0.385VCC 0.40VCC V VNTC1 Input voltage 1 PIN: NTC1 0.37VCC 0.385VCC 0.40VCC VNTC2 Input voltage 2 PIN: NTC1 0.39VCC 0.40VCC 0.41VCC ICC Current consumption NTC1, CLK tied to GND, V CC = 5.0V - - 250 A (Unless otherwise noted, VCC = 3.5 ~ 5V, TA = -20 ~ 85º C) Sym Description Test conditions Min Typ Max Unit fCLK CLK frequency - - 50/60 - Hz Timer Power off timer FCLK= 50Hz 1.15 1.2 1.25 Hour 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 condi - tions above those indicated in the operational sec - tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

12-07-0006 PT0217 -5 07/06/12 Heating Controller Typical Application Circuit PT8A3240/1/2/3 application circuit PT8A3244/5/6/7application circuit

12-07-0006 PT0217 -5 07/06/12 Heating Controller Mechanical Information PE (DIP-8) Min Max A 3.710 4.310 A1 0.510 A2 3.200 3.600 B 0.380 0.570 c 0.204 0.360 D 9.000 9.400 E 6.200 6.600 E1 7.320 7.920 e L 3.000 3.600 E2 8.400 9.000 Symbol

1.524 BSC

2.540 BSC

Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC MS -001D/BA

12-07-0006 PT0217 -5 07/06/12 Heating Controller WE (SOIC-8) Min Max A 1.350 1.750 A1 0.100 0.250 A2 1.350 1.550 b 0.330 0.510 c 0.170 0.250 D 4.700 5.100 E 3.800 4.000 E1 5.800 6.200 e L 0.400 1.270 θ 0° 8° Symbol Dimensions In Millimeters

1.27 BSC

Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC MS -012E/AA

Ordering Information

Part No. Package Code Package PT8A324xPE P Lead free DIP-8 PT8A324xWE W Lead free and Green SOIC-8 Note:  x=0/1/2/3/4/5/6/7 show different part no with different function, details see below table .  E = Pb-free or Pb-free & Green  Adding X Suffix= Tape/Reel 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.