PT8A3280 Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – Heating Controller

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PT8A3280/1/2/3/4/5/6/7
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Heating Controller
Features
Description
 Dual Voltage (120V/240V) operations
 Auto temperature control with NTC
 NTC open protection
 Multi mode LED indicator
 Proportional control
 Pulse trigger for high current SCR/TRIAC (up to
15mA)
 Internal Zener
 Auto Heating off after heating timer timeout
 Low cost 8-Pin DIP and SOIC package
The PT8A3280/1/2/3/4/5/6/7 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.
This device can be used in both 120V and 240V power
line supplier, as it will automatically adjust the heating
power according to the power line voltage to avoid
heating appliance damage or long heating time. The
proportional control algorithm is designed in this
product.
PT 8A^A327^p0^p/1/^l2ⁱ/^c3 ^ations
PT 8A_3290/1_C/2_u/3_rler
PT 8A3274/5/6/7
PT 8A3294/5/6/7
C1 1 _{ S}8 _traigV_hD_tD_ener NTC1 1
C2 2
7
OFF
NTC2 2
8
VDD
7
LED2
K
3
6
GATE CLK
3
6
GATE
D
4
5
ON
GND
4
5
ON/OFF
Pin Configuration
PT 8A3278/9
PT 8A3280/1/2/3
PT 8A3288/9
PT 8A3284/5/6/7
NTC1 1
NTC2 2
CLK
3
GND
4
8
VDD
NTC1 1
7
TURBO
NTC2 2
6
GATE
CLK
3
5
ON/OFF GND
4
8
VDD
7
LED2
6
GATE
5
LED1
Pin Description
Pin No. Pin Name
1
NTC1
2
NTC2
3
CLK
4
GND
5
LED1
6
GATE
7
LED2
8
VDD
I/O
Description
I
O
I
Power
I/O
O
I/O
Power
NTC voltage input, NTC open detection input
Output signal for NTC open detection
Clock input from power line
Ground and Power
3280/1/2/3/4/5/6/7: LED1 driving output
3280/1/2/3: SCR trigger output
3284/5/6/7: TRIAC trigger output
3280/1/2/3/4/5/6/7: LED2 driving output
Ground and Power
12-07-0006
PT0261-1 07/06/12
1