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PT8A3289x/3299x
Heating Controller
Features
Description
The PT8A3299/3289 is a mixed signal CMOS LSI
chip designed as heating controller with help of external
NTC (Negative Temperature Component). NTC open
protection is implemented for device safety.
- Auto heating-off after heating timer timeout.
- Auto temperature control: maintains user selected
temperature.
- 120V/240V Dual-voltage.
Dual Voltage (120/240V) operations
Internal 5V Zener
Auto temperature control with NTC
NTC open protection
Multi mode LED indicator
Pulse trigger for high current SCR/TRIAC
Auto Heating off after heating timer timeout (1.2h
at 50Hz and 1h at 60)
Low cost 8-Pin DIP/SOIC package
Applications
Curler
Straightener
Block Diagram
12-07-0006
1
PT0380-2
07/09/12
PT8A3289x/3299x
Heating Controller
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Pin Assignment
PT8A3289x/3299x
Pin Description
Pin Name
NTC1
NTC2
CLK
Pin No.
1
2
3
I/O
I
O
I
Description
NTC voltage input, NTC open detection input
Output signal for NTC open detection
Clock input from power line
3289(3299)A/B/C/D/M/N/O/P:
Heating-on button input. and LED1 driving
output
3289(3299)E/F/G/H/Q/R/S/T:
Heating-on/off button input and LED1 driving
output
3289(3299)I/J/K//L/U/V/W/X:
Only LED1 driving output
SCR/TRIAC trigger output
3289(3299)A/B/C/D/M/N/O/P:
Heating-off button input and LED2 driving
output
3289(3299)E/F/G/H/Q/R/S/T:
Only LED1 driving output
3289(3299)I/J/K//L/U/V/W/X:
Only LED1 driving output
Ground
Power
IO1
5
I/O
GATE
6
O
IO2
7
I/O
GND
VDD
4
8
Ground
Power
12-07-0006
2
PT0380-2
07/09/12
PT8A3289x/3299x
Heating Controller
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Maximum Ratings
Storage Temperature ................................................................................... -65oC to +150oC
Supply Voltage to Ground Potential (Input & V
CC
Only).......................-0.5V to + 5.5V
Supply Voltage to Ground Potential (Outputs Only) ...............................-0.5V to + 5.5V
DC Input Voltage ............................................................................................-0.5V to + 5.5V
DC Output Current ...................................................................... 20mA
Power Dissipation ......................................................................................................... 500mW
Note:
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.
Recommended operation conditions
Symbol
CLK
T
A
Parameter
Input CLK Frequency
Operating temperature
Min
-
-20
Typ
50/60
25
Max
-
85
Unit
V
°
C
AC Electrical Characteristics
(V
DD
= 4.0~5.5V, T
A
= -20 ~ 85º unless otherwise noted)
C,
Symbol
F
CLK
T
GATE
Description
Frequency of CLK
Width of trigger pulse
Test Conditions
-
-
50Hz
Timer
Power off timer
60Hz
-
60
-
Min
-
240
-
Type
50/60
300
72
Max
-
360
-
Unit
Hz
S
Minute
12-07-0006
3
PT0380-2
07/09/12
PT8A3289x/3299x
Heating Controller
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DC Electrical Characteristics
DC characteristics (V
DD
= 4.0 ~ Vz, T
A
= -20 ~ 85º unless otherwise noted)
C,
Symbol
Description
Test Conditions
PIN: CLK
V
IN
= V
DD
PIN: NTC1
V
IN
= V
DD
I
IH
Input high current
V
IN
= V
DD
,Output
PIN: NTC2
High impedance
PIN: CLK
V
IN
= GND
PIN: NTC1
V
IN
= GND
I
IL
Input low current
V
IN
= GND, Output
PIN: NTC2
High impedance
V
DD
=Vz
PIN: GATE
Vout = 2.5V
V
DD
=Vz
I
OH
Output High current
PIN:IO1
Vout = 1.9V
V
DD
= Vz
PIN:IO2
Vout = Vz-1.9V
V
DD
= Vz
PIN: NTC2
Vout =0.5V
V
DD
=Vz
PIN: GATE
Vout =0.5V
I
OL
Output Low current
V
DD
= Vz
PIN: IO2
Vout =Vz-1.9V
V
DD
= Vz
PIN: IO1
Vout = 1.9V
Input NTC open Voltage
V
NTCO
-
of NTC1 Pin
Input Voltage1 of NTC1
V
NTC1
V
DD
= 4.5V
Pin
Input Voltage2 of NTC1
V
NTC2
V
DD
= 4.5V
Pin
Input Voltage3 of NTC1
V
NTC3
V
DD
= 4.5V
Pin
Input Threshold Voltage
VT
1
V
DD
=4.5V
of Pin 5
Input Threshold Voltage
VT
2
V
DD
=4.5V
of Pin 7
Input Threshold Voltage
V
LEVEL
of CLK Pin for power
V
DD
= 4.5V
level detection
VTL_CLK1
Input Threshold Voltage
of CLK Pin in CLK rise
edge
VT
CLK
Input Threshold Voltage
of CLK Pin in CLK fall
edge
VTH_ CLK1
VTL_ CLK1
V
LEVEL
is low
VTH_ CLK1
VTL_CLK2
V
LEVEL
is high
VTH_CLK2
VTL_CLK2
V
LEVEL
is low
VTH_CLK2
V
POR
V
Z
I
DD
12-07-0006
4
Voltage of POR
Voltage of Zener
Current consumption
-
I
DD
= 500uA ~ 10mA
NTC1,CLK pin tied to ground
V
DD
=4.5V
136
2.7
4.5
-
170
-
5.0
-
204
3.5
5.5
500
PT0380-2
V
V
A
07/09/12
194
70
242
90
290
110
-40
105
-90
145
-140
185
mV
V
LEVEL
is high
Min
-
-
-
-
-
-
-20
-0.7
-50
5.0
5.0
0.7
50
1.1
1.65
2.11
2.21
0.5
3.4
1.7
-180
-100
-135
Type
-
-
-
-
-
-
-
-1.0
-
-
-
1.0
-
1.28
1.69
2.15
2.25
-
-
1.88
-226
-150
-168
Max
1
1
1
-1
-1
-1
-
-1.3
-200
-
-
1.3
200
1.4
1.73
2.19
2.29
1.5
4.0
2.1
-275
-200
-201
Unit
A
A
A
A
A
A
mA
mA
A
mA
mA
mA
A
V
V
V
V
V
V
V
PT8A3289x/3299x
Heating Controller
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Functional Description
State description
Reset
The device will be in reset state after power-on.
Heating on
The device will be in heating-on state after heating-on button is on for two-key parts
The device will be in heating-on state after power on for no-key parts
For one-key parts the ON/OFF button will toggle heating on and heating off, the first time is heating on.
Heating off
This device enters heating-off state after power-on reset enabled or heating timer timeout.
NTC open protection
When NTC is open, NTC1 pin will be pulled low in the NTC open detection period.
Timer
If the timer enables, the IC will be auto heating-off after working 1 hour for 60Hz power or 1.2 hour for 50Hz power.
Control signal output
When working in Heating-on state, Gate/LED output will be related to NTC1 input and CLK input amplitude.
Effect of NTC and VT
CLK
(Level 2) on GATE and LED indication
Working
State
NTC
(NTC open
detection)
ON
V
NTCO
~ V
DD
Off
X
0~V
NTCO
NTC
(Normal temp
detection)
0~ V
NTC2
V
NTC2
~V
NTC3
V
NTC3
~ V
DD
X
X
LED1
Flash1*
State1*
On
Off
Flash2*
Flash
LED2
Invert LED1
Invert LED1
Off
On
Invert LED1
LED1
On
On
On
Off
Flash2
LED
No flash
LED2
Off
State2*
On
Off
Invert LED1
*Note: 1) X means any input.
2) Flash1 frequency is 1/32 clock.
3) Flash2 frequency is 1/8 clock
4) State1 is as below: LED1 will be from Flash1 state to on state when V
NTC
rises above V
NTC3
.
LED1 will be from on state to Flash1 state when V
NTC
drops below V
NTC2
.
5) State2 is as below: LED2 will be from off state to on state when V
NTC
rises above V
NTC3
.
LED2 will be from on state to off state when V
NTC
drops below V
NTC2
.
12-07-0006
5
PT0380-2
07/09/12
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