PT8A3263-66A-F/67A/68A
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NTC Heating Controller with Multi LEDs
Features Description
The PT8A3263/4/5/6/7/8 are mixed signal CMOS
5/6 steps heat temperature settings with 5 LEDs or 6
LSI chips specially designed for heating controller with
LEDs indicator
the external NTC (Negative Temperature Component)
Auto temperature control with NTC
sensor. NTC open protection is implemented for device
NTC open protection
safety and selectable 5 or 6 heating temperature levels.
Pulse trigger for high current SCR / TRIAC (up to
PT8A3263/64 are for 5 step levels (eg.100 ,
15mA)
120 , 140, 160 , 180) and PT8A3265/66 are for
Auto power off after exact 1 Hour heating(It is
6 step levels (eg. 100, 120 , 140, 160 , 180,
optional to disable.)
200 ). They can drive TRIAC or SCR directly and
Dual Voltage (120/240V 50/60Hz) operations (only
detect the heaters temperature with NTC sensor input.
PT8A3263-3266A/B/C available)
They have up/down keys for temperature setting, On/Off
Auto detect power supply Voltage (120V/240V) and
Key for heating on/off control and 3 LEDs display mode.
frequency (50/60Hz)
PT8A3267/68 have 6 step levels (eg.100 , 120 ,
Internal 5V Zener
140 , 160 , 180 , 200). They can drive TRIAC or
DIP-16 and SOIC-16 package
SCR directly and detect the heaters temperature with
Applications
NTC sensor input. They have up/down keys for
temperature setting and On/Off Key for heating on/off
Ceramic heating controller
control. They also have 1 second (2 seconds for
Pin Configuration
PT8A3268A) delay function before go into off state and
lock-key function. Their LEDs have special running
VDD
NTC1
1
16
flash mode (mode 4)
GATE
NTC2
2 15
These devices can be used in both 120V and 240V
L6
CLK
14 power line system, as they can automatically adjust the
3
heating power according to the power line voltage to
L5
TM
4 13
avoid heating appliance damage or long heating time.
PT8A326x
C1
5 12
L4
They have selectable build-in timer to enable/
disable auto-power off function after turn on 1 hour and
K1 6 L3
11
the timer is 1 hour both under 60Hz and 50Hz power
7 10
K2 L2
supply.
GND 8 9 L1
Pin Description
Name Pin No. Type Description
NTC1 1 I NTC voltage input, NTC open detection input
NYC2 2 O Output signal for NTC open detection
CLK 3 I Clock input from power line
TM 4 I Timer be disabled if tied ground
C1 5 O ON state indicator / lock key indicator for 3267A/3268A
K1 6 I UP, DOWN push button input
K2 7 I ON/OFF push button input
L1~L6 9-14 O Six temperature steps indicator LED1~LED6 output
GATE 15 O TRIAC and SCR trigger output
GND 8 Ground Ground
VDD 16 Power Power Supply.
12-07-0006 PT0326-1 07/06/12
1 PT8A3263-66A-F/67A/68A
NTC Heating Controller with Multi LEDs
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Maximum Ratings
Note:
o o
Stresses greater than those listed under MAXIMUM
Storage Temperature ................................................................................... -55 C to +150 C
RATINGS may cause permanent damage to the
o o
Ambient Temperature with Power applied ............................................... -20 C to +85 C
device. This is a stress rating only and functional
Supply Voltage to Ground Potential (Input & V Only)......................... -0.5V to+6.5V
DD
operation of the device at these or any other condi-
Supply Voltage to Ground Potential (Output s Only) ................................ -0.5V to+6.5V
tions above those indicated in the operational sec-
DC Input Voltage ............................................................................................. -0.5V to +6.5V
tions of this specification is not implied. Exposure
Input/Output Current ................................................................... 50mA
to absolute maximum rating conditions for extended
Input/Output Current (Pin VDD, VB only) ............................... 200mA
periods may affect reliability.
Power Dissipation ......................................................................................................... 500mW
Recommended operation conditions
Sym Parameter Pin Min Typ Max Unit
V Operating Voltage VDD 4.0 V - V
DD Z
T Operating temperature - -20 - 85 C
A
F Frequency of CLK CLK - 50/60 - Hz
CLK
DC Electrical Characteristics
DC Input Electrical Characteristics (V = 4.5V, T = -20 ~ 85C, unless otherwise noted)
DD A
Uni
Symbol Description Test Conditions Min Type Max
t
Level Temp(C)
1-half 90 0.8675 0.8775 0.8875
1 100 1.0925 1.1025 1.1125
2-half 110 1.34 1.35 1.36
2 120 1.5875 1.5975 1.6075
3-half 125 1.7113 1.7213 1.7313
VT_ Pin:NTC1
Voltage of NTC1 3 140 2.06 2.07 2.08 V
NTC1 V =4.5V
DD
4-half 145 2.1613 2.1713 2.1813
4 160 2.4425 2.4525 2.4625
5-half 160 2.4425 2.4525 2.4625
5 180 2.735 2.745 2.755
6-half 180 2.735 2.745 2.755
6 200 2.9488 2.9588 2.9688
PIN:TM V = V -1 - 1 uA
IN DD
I Input high current PIN: CLK V = V - - 1 A
IH IN DD
PIN: NTC1 V = V -100 - 100 nA
IN DD
PIN:TM V = GND -30 -40 -50 uA
IN
I Input low current PIN: CLK V = GND -1 - 1 A
IL IN
PIN: NTC1 V = GND -100 - 100 nA
IN
Internal pull-up
R PIN: K1, K2 - 80 100 120 K
PULL-UP
resistance
R Internal pull-
PULL-
PIN: K1, K2 - 80 100 120 K
down resistance
DOWN
12-07-0006 PT0326-1 07/06/12
2