PT8A3515APE datasheet, PDF - EEWORLD Datasheet

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PT8A3515APE: DescriptionBoard Mount Temperature Sensors SmartIron Controller; CategoryAnalog mixed-signal IC The signal circuit; File Size248KB，8 Pages; ManufacturerPericom Semiconductor Corporation (Diodes Incorporated); Websitehttps://www.diodes.com/; Environmental Compliance

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PT8A3515APE Overview

Board Mount Temperature Sensors SmartIron Controller

PT8A3515APE Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Pericom Semiconductor Corporation (Diodes Incorporated)
package instruction	,
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT

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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

GND

5 TEST

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

RELAY

LED

8 VCC

7 ACCLK

6 SW

Applications



Electric Iron Controller

Fig1 PT8A351x pin assigment

Pad Description

Pin No.

Pin Name

DISC/BUZ

RELAY

LED

I/O

Description

Discharge the external electrolytic cap to stabilize and limit its voltage. Output 4KHz to

driver buzzer when timer is out. Active high.

Relay drive output, active high.

With open drain output, it can shut off external LED in parallel with this open-drain

transistor, active low.

Ground.

Low for test mode*.

Sensor signal input, input high will be considered horizontal.

AC 60/50Hz signal for clock with Schmitt architecture, internal drop down.

Power supply.

30s

9.6s

10m

9.6s

15m

12s

PT0259-3

07/06/12

GND

TEST

ACCLK

VCC

*Note: Teat mode comparison table:

Real timer

Test timer

12-07-0006

PT8A3514/15/16/17/18/19(A/B)

Smart Iron Controller

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Functional Description

(Refer to

Block Diagram)

The chip is comprised of several blocks: on-chip shunt regulator, sensor signal processor, build-in system oscillator,

30s/8min/10min/15min timer, logic control circuit, and power on reset, etc. Each block will be described as below.

Logic control circuit

Logic control circuit mainly carries out logic control function. It not only collects signals from other blocks, but also generates

various driving signals including RELAY&DISC. Besides, an external LED will flash at about 1Hz and a buzzer will make a

sound with a frequency of 4KHz every 0.5s for 6 times or continual after internal timer times out. Signals at RELAY will control

external relay to decide whether IRON heats or not.

Sensor signal processor

The core in the whole system is how to correctly detect the position and movement of sensor so that the system can be always

under safe control. Thus, it is critical to accurately and correctly deal with signal from sensor in different status and eliminate the

noise caused by debounce action from sensor. Here, a unique structure is used to do the high-requirement signal processing.

In real application of IRON, sensor needs to be installed according to certain requirements (for example its inclination).

Timer

Timer block mainly generates various timing signal according to the position of IRON.

It is easy to get accurate timer (30s/8min/10min/15min) by using AC 60Hz/50Hz signal as timing reference. As above description,

Iron in Horizontal position over 30s will stop heating. While Iron in vertical position over 8min/10min/ 15min will also stop

heating.

Buzzer

A buzzer will make 0.5S sound with a frequency of 4 KHz for 6 times or continual after internal timer timeouts.

LED

During heating, LED pin is floating and an external LED will turn on. After times out, LED pin outputs pulse and an external LED

will flash at about 1Hz.

12-07-0006

PT0259-3

07/06/12

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