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PT8A3514/15/16/17/18/19(A/B)
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Smart Iron Controller
Features
Build in RC oscillator for sensor signal detection On chip shunt regulated power supply Using AC 60Hz/50Hz as timer clock can select by
Part No. Accurate timer with error dropping in ±1% Sensitive movement detection Powerful immunity of sensor Vibration 30s time out for IRON in static horizontal position 8min/10min/15min time out for IRON in static
vertical position LED to indicate operation status Usable in both 120V and 240V voltage supply
system Quick function test mode Support buzzer Few external components System standby mode power dissipation less than
1W (Base on recommended application circuits) DIP-8 and SOIC-8 package Patent No: ZL 2005 2 0048330.4
Applications
Description
The PT8A3514/15/16/17/18/19(A/B) are high performance low power and low cost CMOS chips designed for intelligent electric IRON controller. Their intelligence mainly results from their sensitive detection to the movement and static position of electric iron by using a special sensor. With the sensor, these chips can detect the vertical/horizontal position and movement status of IRON.
These chips are equipped with on-chip shunt regulator, sensor signal processor, build-in oscillator, timer, logic control, power on reset and output driving block etc.
Pin Assignment
DISC/BUZ 1 RELAY 2 LED 3 GND 4
8 VCC 7 ACCLK 6 SW 5 TEST
Electric Iron Controller
Fig1 PT8A351x pin assigment
Pad Description
Pin No. Pin Name I/O
Description
Discharge the external electrolytic cap to stabilize and limit its voltage. Output 4KHz to 1 DISC/BUZ O
driver buzzer when timer is out. Active high.
2
RELAY
O Relay drive output, active high.
With open drain output, it can shut off external LED in parallel with this open-drain 3 LED O
transistor, active low.
4
GND
- Ground.
5
TEST
I Low for test mode*.
6 SW I Sensor signal input, input high will be considered horizontal.
7
ACCLK
I AC 60/50Hz signal for clock with Schmitt architecture, internal drop down.
8
VCC
- Power supply.
*Note: Teat mode comparison table:
Real timer Test timer
30s 8m 10m 3s 9.6s 9.6s
15m 12s
12-07-0006
PT0259-3 07/06/12 1
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PT8A3514/15/16/17/18/19(A/B) Smart Iron Controller
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Block Diagram
Sensor signal
SW processor
Power on re s e t
SWO
Logic Control C .