IES5521ATR Hendon Semiconductors, IES5521ATR Datasheet

IES5521ATR

Manufacturer Part Number

IES5521ATR

Description

Board Mount Temperature Sensors 10mA Triac Temp control + Timer

Manufacturer

Hendon Semiconductors

Datasheet

1.IES5521AT.pdf (11 pages)

Specifications of IES5521ATR

Package / Case

SO-8

Supply Voltage (max)

7.6 V

Supply Voltage (min)

6.3 V

Maximum Operating Temperature

+ 100 C

Minimum Operating Temperature

- 25 C

Supply Current

210 uA

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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• Time-out function stops triac operation after a set time

• Reset time-out by turning mains supply off and on

• Low external component count

• Constant ON period time, with proportional OFF time

• All ON periods are an integral number of mains cycles

• No DC component in the mains supply

• On chip circuit protection against triac gate spikes

• Low supply current requirement

• Sensor AC powered, thus minimising DC supply and

• Separate power supply input, allowing easy gate pulse

• Accurate time-out using the mains frequency, or widely

• Temperature control of cooking or heating appliances.

• Hair styling tools (straighteners, driers, curling wands ..)

• Electric Irons

• Toaster Ovens, Rice Cookers, Hotplates, Fry Pans, etc.

• Electric Blankets, Heating Pads, etc.

• or other appliances where a safety time-out is required.

2006 Sep 01, Revision 1.1

filtering needs

width adjustment

adjustable external “RC” time-out

@25°C

100k

NTC

FEATURES

TYPICAL APPLICATIONS

BLOCK DIAGRAM

100k

RV1

SENS

47uF

10V

IES5521A

100nF

CAP

latch

Fig.1 Block diagram

Rtc

* If required

crossing

time-out

control

logic

zero

timer

Simple Zero-Crossing Triac Control

The IES5521A is a derivative of the OM1654A, but offering

the extra safety feature of a nominal 1 hour time-out. This

is a key safety requirement for a range of personal and

home appliance applications. The time-out function will

stop the triac operation and thus prevent power from being

applied to the heating elements.

Time-out can be accurately controlled from the AC supply

frequency for a period of 1 hour (60Hz, or 71minutes at

50Hz), or can be adjusted by adding external resistor and

capacitor components to set the frequency of an on-chip

RC oscillator. In this manner, time-out periods from 1

minute to more than 5 hours, are possible.

The IES5521A is a monolithic bipolar control circuit for

zero-crossing triggering of a triac in applications where it is

controlled by a resistive sensor such as an NTC

thermistor. In a typical application it can be used for the

temperature control of a heating element in a cooker or

another home heating appliance.

It is designed to control a suitable triac with a resistive load

ranging from 400 watts on a nominal 220/250 volt mains

supply. It can also be easily applied to 120Vac mains

applications.

Circuit with Adjustable Time-out

GATE

GENERAL DESCRIPTION

−6.5V

DC supply

stabalised

Vee

6.5V

Vcc

IES5521A-block cct4

Contents are subject to the Disclaimer

PWR

Rd* 100k

Rc 0.25W

IES5521A

0.6W

330k

Product Specification

Neutral

Active

Load

Triac

BT134-600E

230Vac

mains

Related parts for IES5521ATR

IES5521ATR Summary of contents

Page 1

... C2 47uF 10V IES5521A Ra © 2006 Integrated Electronic Solutions Pty Ltd. trading as Hendon Semiconductors, all rights reserved. 2006 Sep 01, Revision 1.1 Simple Zero-Crossing Triac Control Circuit with Adjustable Time-out 3 GENERAL DESCRIPTION The IES5521A is a derivative of the OM1654A, but offering the extra safety feature of a nominal 1 hour time-out. This is a key safety requirement for a range of personal and home appliance applications ...

Page 2

PINNING INFORMATION 5.1 Pinning layout (8 pin GATE IES5521A SENS Fig.2 Pinning diagram (DIL-8 and SO-8) 6 FUNCTIONAL DESCRIPTION − Common, positive DC 6 supply The positive DC supply ...

Page 3

GATE − Triac gate drive 6.5 The triac gate drive output is designed to be connected directly to the triac gate without the need for an external current setting resistor. It has inbuilt protection to withstand transient signals which may ...

Page 4

For the application circuit of figure 6, the oscillation frequency ( OSC therefore: 1 ≈ -------------------------------- Hz OSC × × 1. The tolerance of the RC components determines the ...

Page 5

CHARACTERISTICS 25°C; Voltages are specified with respect to pin 3 (V amb SYMBOL PARAMETER Power supply −V supply voltage (operating) EE −I supply current (operating) EE Gate drive I gate current (triac GATE ...

Page 6

APPLICATION INFORMATION 9.1 Design considerations Figure 5 shows a typical simple circuit for a load of greater than 400W. In this application the PWR pin is not used. The power supply resistance of 160 kΩ sets the DC power ...

Page 7

Use of an input bridge circuit with gain will permit greater accuracy, and exhibit less ambient temperature dependence (for example by using one external transistor). These circuits still use an AC sensing circuit, and therefore do not provide ...

Page 8

Application circuits RV1 10 kΩ NTC1 10 θ kΩ Fig.5 IES5521A application diagram: 400 W resistive heating load, referenced to mains, R1 220 kΩ RV1 10 kΩ NTC1 10 θ kΩ R2 1kΩ C3 100nF 10V Fig.6 IES5521A application ...

Page 9

ORDERING INFORMATION TYPE NUMBER NAME IES5521A P DIP8 plastic dual in-line package; 8 leads (300 mil) IES5521A T SO8 plastic small outline package; 8 leads; body width 3.9 mm For more information on packages, please refer to the document ...

Page 10

... Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given advisory and does not form part of the specification. 14 COMPANY INFORMATION HENDON SEMICONDUCTORS a trading name of INTEGRATED ELECTRONIC SOLUTIONS PTY. LTD. ABN 17 080 879 616 Postal address: Hendon Semiconductors ...

Page 11

... Life Support Applications Products of Hendon Semiconductors (Hendon) are not designed for use in life support appliances, devices or systems, where malfunction can result in personal injury. Customers using or selling Hendon products for use in such applications their own risk and agree to fully indemnify Hendon for any damages resulting from such improper use or sale. ...

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