PT8A3263B (Obsolete)

Product Description

The PT8A3263/4/5/6/7/8 are mixed signal CMOS LSI chips specially designed for heating controller with the external NTC (Negative Temperature Component) sensor. NTC open protection is implemented for device safety and selectable 5 or 6 heating temperature levels.

PT8A3263/64 are for 5 step levels (eg.100℃, 120℃, 140℃, 160℃, 180℃) and PT8A3265/66 are for 6 step levels (eg. 100℃, 120℃, 140℃, 160℃, 180℃, 200℃). They can drive TRIAC or SCR directly and detect the heater’s temperature with NTC sensor input. They have up/down keys for temperature setting, On/Off Key for heating on/off control and 3 LEDs display mode.

PT8A3267/68 have 6 step levels (eg.100℃, 120℃, 140℃, 160℃, 180℃, 200℃). They can drive TRIAC or SCR directly and detect the heater’s temperature with NTC sensor input. They have up/down keys for temperature setting and On/Off Key for heating on/off control. They also have 1 second (2 seconds for PT8A3268A) delay function before go into off state and lock-key function. Their LEDs have special running flash mode (mode 4)

These devices can be used in both 120V and 240V power line system, as they can automatically adjust the heating power according to the power line voltage to avoid heating appliance damage or long heating time.

They have selectable build-in timer to enable/ disable auto-power off function after turn on 1 hour and the timer is 1 hour both under 60Hz and 50Hz power supply.

Features

• 5/6 steps heat temperature settings with 5 LEDs or 6 LEDs indicator
• Auto temperature control with NTC
• NTC open protection
• Pulse trigger for high current SCR / TRIAC (up to 15mA)
• Auto power off after exact 1 Hour heating(It is optional to disable.)
• Dual Voltage (120/240V 50/60Hz) operations (only PT8A3263-3266A/B/C available)
• Auto detect power supply Voltage (120V/240V) and frequency (50/60Hz)
• Internal 5V Zener
• DIP-16 and SOIC-16 package

Applications

• Ceramic heating controller