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PT8A3254 fiches techniques PDF

Pericom Semiconductor - Ceramic Heating Controller

Numéro de référence PT8A3254
Description Ceramic Heating Controller
Fabricant Pericom Semiconductor 
Logo Pericom Semiconductor 





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PT8A3254 fiche technique
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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
Applications
Ceramic Heating Controller
High watt density Alumina Heaters
The PT8A3252/54 is specially designed for ceramic
heating control with 5 internal level of 130C, 145C,
160C, 175C, 190C. And the temperature range can be
adjusted from 100C to 250C 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
temperature reached to 250C. 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

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