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PT8A2526

Description
Universal Timer Controller
File Size275KB,10 Pages
ManufacturerPericom Semiconductor Corporation (Diodes Incorporated)
Websitehttps://www.diodes.com/
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PT8A2526 Overview

Universal Timer Controller

PT8A2524-26/34-36/44-46
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Universal Timer Controller
Features
Description
Universal timer is a mixed signal CMOS IC
designed for a fixed timer to drive external RELAY to
implement safety power control. It is applied to
120V/240V and 50/60Hz AC power supply. It can
automatically shut-off load in order to prevent undesired
conditions from the system. Internal timer can present
several kinds of different time: 15mins, 30mins, 45mins,
1hr, 1.5hrs, 2hrs, 4hrs and 8hrs, which is decided by part
number.
Auto-shut off output once time-out
Button to ON/OFF/RESET timer
Available timer with high precision same as AC
50/60hz
Build-in RC oscillator
Drive external RELAY
Support 50/60Hz by part
Quick Test Mode (QTM) for manufacturer
Available timer of 15/30/45/60/90/120/240/480min
Buzzer function(PT8A2524/25/34/35/44/45
Optional)
Low cost lead free package: TO94-4 or DIP-8 or
SOIC-8
PT8A2524/5/6A-H
PT8A2534/5/6A-H
TO94-4(Top View)
Applications
Universal Timer Controller
Pin Configuration
PT8A2544/5/6
DIP-8 or SOIC-8
(Top View)
Pin Description
PT8A2524/5/6A-H, PT8A2534/5/6A-H
Pin Name
Pin No
I/O
Pin Description
GND
1
-
Ground
DISC
2
I/O Control output if discharging external capacitor and button input, high active
RELAY
3
I/O RELAY output and button input, high active
VCC
4
-
Power supply
PT8A2544/5/6
Pin Name
Pin No.
I/O
Pin Description
Timer selection pins(TS2 TS1 TS0 from 000~111)
TS2
1
I
000: 15m, 001: 30m, 010: 45m, 011: 60m,
TS1
2
I
100: 90m, 101: 120m,110: 240m,111: 480m
TS0
3
I
Default 011 by TS2 internal pull down, TS1&TS0 internal pull up
GND
4
-
Ground
DISC
5
I/O
Control output if discharging external capacitor and button input, high active
RELAY
6
I/O
RELAY output and button input, high active
50/60Hz selection pin: default is 60Hz by internal pull down; connecting to VCC is
ACSEL
7
I
50Hz.
VCC
8
-
Power supply
2013-12-0013
1
PT0266-5
01/03/14

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