PT8A330xA/B
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Ceramic Heat Controller
Features Description
The PT8A330X is specially designed for ceramic
High watt density Alumina Heaters
heating control system. It can set the temperature
High current pulse trigger for SCR
continuously .It can drive SCR directly and detect the
Quickly Heating-Up and Quickly Lost-Heat-
heater temperature without extra temperature sensor.
Recover
It will start heat after power on and has one LED for
Dual voltage 120VAC / 240VAC
working state indication. Build-in timer will
Internal 5v zener
automatically power off after turn on for 1 hour @
Insensitive to environment temperature
60Hz or 1.2 hour @ 50Hz (for PT8A3300/1).
Auto power off Optional
DIP-8 and SOIC-8 package
Applications
Ceramic heating controller
Pin Configuration
Pin Description
Name Pin No. Type Description
VDD 1 power Power input or can be used as OFF push button input
PTC 2 I Temperature sensor input
VB 3 O Sampling bias voltage
REF 4 O Reference for internal comparator
LED 5 O LED driver output
CLK 6 I Clock input from AC power line
GND 7 power Power Ground
GATE 8 O SCR trigger output, active high
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PT8A330xA/B
Ceramic Heat Controller
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Block Diagram
Maximum Ratings
Note:
o o
Storage Temperature ................................................................................... -55 C to +150 C Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
Supply Voltage to Ground Potential (Input & V Only)....................... -0.5V to + 6.5V
DD
device. This is a stress rating only and functional
Supply Voltage to Ground Potential (Output s Only) .............................. -0.5V to + 6.5V
operation of the device at these or any other condi-
DC Input Voltage ............................................................................................ -0.5V to + 6.5V
tions above those indicated in the operational sec-
Input/Output Current ................................................................................... 50mA
tions of this specification is not implied. Exposure
Input/Output Current(Pin VDD, VBonly) ................................. 200mA
to absolute maximum rating conditions for extended
Power Dissipation ......................................................................................................... 500mW
periods may affect reliability.
Recommended operation conditions
Symbol Description Min Type Max Unit
T Operation Temperature -20 - +85 C
A
V Supply voltage 4.0 4.5 5.0 V
DD
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