PT8A3252 Datasheet, PDF (1/7 Pages) Pericom Semiconductor Corporation – 5LED Ceramic Heating Controller

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PT8A3252/54
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5LED Ceramic Heating Controller
Features
Description
 Pulse trigger with high current for SCR
 Quickly Heating-Up and Quickly Lost-Heat-
Recover
 External Adjustable to fit wide range heating plates
 External Adjustable to different TCR of sensors
 Full temperature compensation and insensitive to
environment temperature
 5 Heat Temperature Settings
 Auto power off (only for PT8A3252)
 Over Temperature protection
 DIP-16 and SOIC-16 packages
The PT8A3252/54 is specially designed for ceramic
heating control with 5 internal level of 130C, 145C,
160C, 175C, 190C. And the temperature range can be
adjusted from 100C to 250C by external series
resistance. It can drive SCR directly and detect heater
temperature by heater-self without extra temperature
sensor. It has 3 keys for function setting, 5 LEDs for
working status indication. The PT8A3252 has an
internal timer; it timeouts and device will stop heating
automatically after 216000 clock period, ie. 1 hour for
60Hz and 1.2 hour for 50Hz. The circuit of Over-Heat
Protection will be working for safety when heater
Applications
 Ceramic Heating Controller
 High watt density Alumina Heaters
temperature reached to 250C. The chip is packaged in
lead free DIP-16 and SOIC-16.
Pin Configuration
L4 ₁
C1 ²
C2 ₃
REF2 ₄
REF1 ₅
PTC 6
GATE 7
OT 8
PT8A3252/54
16 ^L3
15 ^L2
14 ^L1
13 ^VDD1
12 _VDD2
11 _VB
10 GND
9 CLK
12-07-0006
PT0233-1 07/06/12
1