PT8A2532DNBE [DIODES]
Programmable Timer, CMOS,;
| 型号： | PT8A2532DNBE |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Programmable Timer, CMOS, |
| 文件： | 总9页 (文件大小：288K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Universal Timer Controller
Features
Description
Auto-shut off output once time-out
Universal timer is a mixed signal CMOS IC
designed for a fixed timer to drive external SCR 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.
Button to ON/OFF/RESET timer
Available timer with high precision same as AC
50/60Hz
Build-in RC oscillator
Drive external SCR
Support 50/60Hz by part
Quick Test Mode (QTM) for manufacturer
Available timer of 15/30/45/60/90/120/240/480min
Low cost lead free package: TO-92 or DIP-8 or
SOIC-8
Applications
Universal Timer Controller
Pin Configuration
PT8A2521/2/3A-H
PT8A2531/2/3A-H
TO92-3 (Top View)
PT8A2541/2/3
DIP-8 or SOIC-8
(Top View)
TO92-3
Pin Description
PT8A2521/2/3A-H, PT8A2531/2/3A-H
Pin Name
VCC
Pin No
I/O
Pin Description
1
2
3
-
Power supply
SCR
I/O SCR output and button input, high active
GND
-
Ground
PT8A2541/2/3
Pin Name
TS2
Pin No.
I/O
Pin Description
Timer selection pins(TS2 TS1 TS0 from 000~111)
000: 15m, 001: 30m, 010: 45m, 011: 60m,
100: 90m, 101: 120m,110: 240m,111: 480m
Default 011 by TS2 internal pull down, TS1&TS0 internal pull up.
1
2
3
4
5
6
I
I
TS1
TS0
GND
SCR
NC
I
-
Ground.
I/O
I/O
SCR output and button input, high active.
No connection.
50/60Hz selection pin: default is 60Hz by internal pull down; connecting to VCC is
50Hz.
Power supply.
ACSEL
VCC
7
8
I
-
12-07-0006
PT0246-3
07/0612
1
PT8A2521-3/31-3/41-3
Universal Timer Controller
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Maximum Ratings
Note:
o
o
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions above those indicated in the operational sec-
tions of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
StorageTemperature...................................................................................-40 Cto+125 C
SupplyVoltagetoGroundPotential(Input&VCC Only)..............-0.5VtoVCC +0.5V
SupplyVoltagetoGroundPotential(Outputs&D/OOnly).......-0.5VtoVCC +0.5V
DCInputVoltage ...................................................................................-0.5VtoVCC +0.5V
DC Output Current......................................................................20mA
PowerDissipation.........................................................................................................500mW
Recommendedoperationconditions
Symbol
Parameter
Min
4.2
0
Typ
4.7
25
Max
5.2
Unit
V
VCC
Operating Voltage
Operating temperature
TA
85
℃
Electrical Characteristics
Test Conditions
Sym
Parameter
Min
Typ
Max
Unit
VCC
-
Conditions
VCC
VTH1
VTH2
IOH
Shunt Regulator output voltage
Input high threshold(SCR)
Input low threshold(SCR)
Output Source Current (SCR)
Output Sink Current (SCR)
Power supply current
ICC =1mA
4.2
3.6
0.3
-0.2
6
4.7
4
5.2
4.4
1.0
-0.4
24
V
V
5V
5V
5V
5V
4.0V
5V
-
-
0.65
-0.3
12
V
V OH1=2.5V
mA
μA
mA
KHz
IOL
V OL1=0.5V
ICC
-
-
0.5
160
-
FOSC
Frequency of internal oscillator
-
96
128
12-07-0006
PT0246-3
07/0612
2
PT8A2521-3/31-3/41-3
Universal Timer Controller
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Block Diagram
ACSEL
Reference
circuit
Clock extracting
GND
circuit
VCC
Shunt
Regulator
SCR driving
SCR
circuit
Internal RC
Oscillator
Button sampling
circuit
PBO
Timer Chain
15/30/45/60m/90m/2h/4h/8h
Functional Description (Note: In below description, “RELAY” presents a pin, while “relay” means a device.)
●
●
●
Reference and Shunt Regulator
Button sampling circuit senses button’s operation 3 times
per 8ms.System will sample the button’s operation
during first 100ms after power on, if buttons are pressed
during this period, then system will start 3s timer to
check if the chip will enter into quick test mode (see test
mode section). If the related button is pressed over 3s
just after power on, chip will enter quick test mode as
soon as the button is released. If buttons are not pressed
during first 100ms, system will operate normally.
Reference circuit generates 1.2V VCC-independent and
temperature-independent voltage to provide reference
voltage for the build-in shunt regulator. The regulator
supplies all internal function blocks.
Clock extracting circuit
VCC is not only the power supply pin but also clock
source for internal precise timer. With the help of the
external circuit, the AC 50/60Hz clock signal can be
extracted to be used as timer clock source.
●
●
SCR driving circuit
System outputs high to drive high sensitive SCR.
Internal RC oscillator circuit
It is employed to create pulse driving signal for RELAY,
it is a completely internal RC oscillator with frequency
of about 128KHZ.
Quick Test Mode(QTM)
In order to make the manufacturer’s test convenient,
quick test mode is designed to speed up the test.
QTM can be accessed by pressing button (ON/RESET)
over 3s (option 2s) once power on. It can exit
automatically after quick test timer is expired, system
needs to power on again to come back normal operation
after quick test mode. Any button operations will be
ignored in QTM.
●
●
Timer chain
Timer chain can be used to generate various timer
including 15/30/45/60/90/120/240/480min.
Button sampling circuit
With external buttons, ON/OFF/RESET function can be
realized. User can select one button with once ON, once
OFF or two buttons to turn ON or OFF separately, also
use one button to restart timer.
Power on
>3s
will be ignored
First PB ON
<100ms
Second PB ON
sampling time
*12s for 2hrs
Quick test mode
Normal mode
3s warm up
Operation illustration of entering into and exiting Quick test mode
Below table shows the timer in QTM corresponding to real timer.
Table Real timer compared to the timer in QTM
Real timer
15m
2s
30m
4s
45m
6s
60m
8s
90m
10s
120m
12s
240m
14s
480m
16s
Timer in QTM
12-07-0006
PT0246-3
07/0612
3
PT8A2521-3/31-3/41-3
Universal Timer Controller
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Application Circuit
Note: SCR is high sensitive SCR which the gate trigger current is about 200uA.
TO-92 Universal Timer to drive SCR with one button
D1
R1
ACL
24K *1/2W
LOAD
IN4007
100K* 1/2W
C3
104
U1
VCC
S1
RESET or ON/OFF
Q1
C1
120V/240V
22uF/16V
R2
2
SCR
5.6K
GND
PT8A2521/2-PT8A2531/2
R3
3K
C2
104
ACN
*Note1: For 120VAC power supply system, R1 value is 24K.
For 240VAC power supply system, R1 value is 100K.
Note2: C1 value range is 22uF to 68uF.
TO-92 Universal Timer to drive SCR with two buttons
D1
PT8A2523-PT8A2533
R1
ACL
24K *1/2W
100K* 1/2W
LOAD
IN4007
U1
S1
VCC
SCR
GND
ON
Q1
R2
120V/240V
C1
2
C3
104
5.6K
22uF/16V
S2
R3
3K
OFF
C2
104
ACN
*Note1: For 120VAC power supply system, R1 value is 24K.
For 240VAC power supply system, R1 value is 100K.
Note2: C1 value range is 22uF to 68uF.
12-07-0006
PT0246-3
07/0612
4
PT8A2521-3/31-3/41-3
Universal Timer Controller
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DIP8 Universal Timer to drive SCR with one button
VCC
D1
R1
ACL
IN4007
24K 1/2W*
100K 1/2W*
U1
LOAD
1
2
3
4
8
7
6
5
TS2
VCC
ACSEL
NC
S1
RESETor ON/OFF
TS1
TS0
K1
Q1
120V/240V
C 2
104
C 1
R2
GND
SCR
22uF/16V
5.6K
PT8A2541/2PE
R3
3K
C 3
104
ACN
*Note1: For 120VAC/60Hz power supply system, R1 value is 24K, ACSEL is connected to GND or floating.
For 240VAC/50Hz power supply system, R1 value is 100K, ACSEL is connected to VCC.
*Note2: TS0, TS1 and TS2 are floating, the timer time out is 60 minutes.
Note3: C1 value range is 22uF to 68uF.
DIP8 Universal Timer to drive SCR with two buttons
VCC
D1
R1
ACL
IN4007
24K 1/2W*
100K 1/2W*
U1
LOAD
1
2
3
4
8
7
6
5
TS2
VCC
ACSEL
NC
S1
ON
TS1
TS0
K1
Q1
120V/240V
C 2
104
C 1
R2
GND
SCR
22uF/16V
5.6K
PT8A2543PE
R3
3K
C 3
104
S2
OFF
ACN
*Note1: For 120VAC/60Hz power supply system, R1 value is 24K, ACSEL is connected to GND or floating.
For 240VAC/50Hz power supply system, R1 value is 100K, ACSEL is connected to VCC.
*Note2: TS0, TS1 and TS2 are floating, the timer time out is 60 minutes.
Note3: C1 value range is 22uF to 68uF.
12-07-0006
PT0246-3
07/0612
5
PT8A2521-3/31-3/41-3
Universal Timer Controller
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Mechanical Information
NBE (TO92-3)
PKG. DIMENSIONS(MM)
SYMBOL
MIN
3.3
1.1
0.38
0.36
4.30
3.43
4.30
MAX
3.7
1.4
0.55
0.51
4.70
A
A1
b
c
D
D1
E
e
4.70
2.64
1.27TYP
e1
2.44
F1
F2
L
2.50TYP
2.50TYP
12
13
10.00
1.6
L1
φ
9.00
h
0.00
0.38
12-07-0006
PT0246-3
07/0612
6
PT8A2521-3/31-3/41-3
Universal Timer Controller
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PE (DIP-8)
Dimensions In Millimeters
Symbol
Min
3.710
0.510
3.200
0.380
Max
4.310
A
A1
A2
B
3.600
0.570
B1
c
1.524 BSC
2.540 BSC
0.204
9.000
6.200
0.360
9.400
6.600
D
E
E1
e
7.320
7.920
Note:
1) Controlling dimensions in millimeters.
2) Ref: JEDEC MS-001D/BA
L
E2
3.000
8.400
3.600
9.000
12-07-0006
PT0246-3
07/0612
7
PT8A2521-3/31-3/41-3
Universal Timer Controller
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WE (SOIC-8)
Dimensions In Millimeters
Symbol
Min
1.350
0.100
1.350
0.330
0.170
4.700
3.800
5.800
Max
1.750
0.250
1.550
0.510
0.250
5.100
4.000
6.200
A
A1
A2
b
Note:
c
D
1) Controlling dimensions in millimeters.
2) Ref: JEDEC MS-012E/AA
E
E1
e
L
θ
1.27 BSC
0.400
0°
1.270
8°
12-07-0006
PT0246-3
07/0612
8
PT8A2521-3/31-3/41-3
Universal Timer Controller
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Ordering Information
Ordering No.
PT8A2521xNBE*
PT8A2522xNBE*
PT8A2523xNBE*
PT8A2531xNBE*
PT8A2532xNBE*
PT8A2533xNBE*
PT8A2541PE
Package Code
Package
Lead free TO-92
NB
NB
NB
NB
NB
NB
P
Lead free TO-92
Lead free TO-92
Lead free TO-92
Lead free TO-92
Lead free TO-92
Lead free DIP-8
PT8A2542PE*
P
Lead free DIP-8
PT8A2543PE*
P
Lead free DIP-8
PT8A2541WE
W
Lead free and Green SOIC-8
Lead free and Green SOIC-8
Lead free and Green SOIC-8
PT8A2542WE*
PT8A2543WE*
W
W
Note:
“x” shows A~H with different Internal Timer, see below Suffix x: Internal Timer table.
E = Pb-free or Pb-free & Green
Adding X Suffix= Tape/Reel
*contact Pericom for availability.
Function Comparison Table
One/Two
50/60
Hz
One/Two
key
50/60
Hz
Part No
Button
Part No
Button
key
PT8A2521x
PT8A2522x
PT8A2523x
One
One
Two
Reset
On/Off
On, Off
50HZ
50HZ
50HZ
PT8A2531x
PT8A2532x
PT8A2533x
One
One
Two
Reset
On/Off
On, Off
60HZ
60HZ
60HZ
Part No
One/Two key
One
Button
50/60 Hz
Optional
Optional
Optional
Timer(min)
Optional
Optional
PT8A2541
PT8A2542
PT8A2543
Reset
On/Off
On, Off
One
Two
Optional
Suffix x: Internal Timer Table
A
B
C
D
E
F
G
H
Suffix
Internal
Timer(min)
15
30
45
60
90
120
240
480
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Pericom Technology Incorporation reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or
performance and to supply the best possible product. Pericom Technology does not assume any responsibility for use of any circuitry described other than the
circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other
rights, of Pericom.
12-07-0006
PT0246-3
07/0612
9
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