PT8A3284WE

PT8A3280/1/2/3/4/5/6/7 Heating Controller Features Description Dual Voltage (120V/240V) operations The PT8A3280/1/2/3/4/5/6/7 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/TRIAC (up to line supplier, as it will automatically adjust the heating 15mA) power according to the power line voltage to avoid Internal Zener heating appliance damage or long heating time. The Auto Heating off after heating timer timeout proportional control algorithm is designed in this Low cost 8-Pin DIP and SOIC package product. Pin Configuration Applications PT8A3270/1/2/3 PT8A3274/5/6/7 PT8A3278/9 PT8A3280/1/2/3 PT8A3290/1/2/3 PT8A3294/5/6/7 PT8A3288/9 PT8A3284/5/6/7 Curler NTC1 1 8 VDD NTC1 1 8 VDD NTC1 1 8 VDD NTC1 1 8 VDD Straightener NTC2 2 7 OFF NTC2 2 7 LED2 NTC2 2 7 TURBO NTC2 2 7 LED2 CLK 3 6 GATE CLK 3 6 GATE CLK 3 6 GATE CLK 3 6 GATE GND 4 5 ON GND 4 5 ON/OFF GND 4 5 ON/OFF GND 4 5 LED1 Pin Description Pin No. Pin Name I/O Description 1 NTC1 I NTC voltage input, NTC open detection input 2 NTC2 O Output signal for NTC open detection 3 CLK I Clock input from power line 4 GND Power Ground and Power 5 LED1 I/O 3280/1/2/3/4/5/6/7: LED1 driving output 3280/1/2/3: SCR trigger output 6 GATE O 3284/5/6/7: TRIAC trigger output 7 LED2 I/O 3280/1/2/3/4/5/6/7: LED2 driving output 8 VDD Power Ground and Power 12-07-0006 PT0261-1 07/06/12 1 PT8A3280/1/2/3/4/5/6/7 Heating Controller Block Diagram Precise OFF/TURBO/LED2 NTC1 5bit ADC LED2 ADC GATE Controller NTC2 CLK ON/ON OFF/LED1 LED1 Maximum Ratings Note: Stresses greater than those listed under MAXIMUM o o Storage Temperature ................................................................................... -65 C to +150 C RATINGS may cause permanent damage to the Supply Voltage to Ground Potential (Input & V Only) ....................... -0.5V to + 5.5V CC device. This is a stress rating only and functional Supply Voltage to Ground Potential (Outputs) .......................................... -0.5V to + 5.5V operation of the device at these or any other condi- DC Input Voltage ............................................................................................ -0.5V to + 5.5V tions above those indicated in the operational sec- DC 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 Symbol Pin Parameter Min Typ Max Unit Frequency CLK Input CLK Frequency - 50/60 - Hz T - Operating temperature -20 - 85 A AC Electrical Characteristics (V = 3.5 ~ 5.5V, T = -20 ~ 85C, unless otherwise noted) DD A Symbo Description Test Conditions Min Type Max Unit l F Frequency of CLK - 50/60 Hz CLK T Width of trigger pulse - 160 200 240 S GATE Timer Power off timer F = 50Hz 1.15 1.2 1.25 Hour CLK 12-07-0006 PT0261-1 07/06/12 2