one integrated circuit for the range of hair styling tools

The hair styling tools range of integrated circuits are simple, low cost integrated circuits for heating or temperature control applications, particularly well suited for hair styling tools such as hair straighteners, flat irons, hair crimpers, curling irons and hair dryers. It is designed with the aim of helping you reduce the time to market of your hair styling tools. To date, over 20 millions of OM1654A, the first product from the hair styling tools family of integrated circuits have been sold worldwide. Based on the success of OM1654A, IES5521A the second product from this family is designed to give improved performance and added features. Discover the benefits of OM1654A and the new IES5521A in helping you deliver the best performance in your products. Rapid heat up time – achieve set temperature Reduce cost of circuitry - less external electronic components Reduce design time - proven solution Higher stability and performance reliability – solution dedicated to specific application

competitive advantage

The Hendon Semiconductors hair styling tools of integrated circuits are able to bring features such as : LED indicator Adjustable or preset temperature control Rapid heat up time Safety auto timeout/ shut off (IES5521A only) Using the hair styling tools range of integrated circuits gives you the benefit of: Low external component count All Hendon Semiconductors integrated circuits operate direct from the AC mains and so no external DC supply is required. Zero-crossing triac switching ensure low electro-magnetic interference (EMI) operation and therefore require minimal RFI filtering circuit. Low electronic circuitry cost Low external component count leads to overall reduced cost in electronic circuitry and bills of materials (BOM) Small PCB foot print for circuitry Small size packaging (SO-8) of integrated circuits and minimum external components requires only a small printed circuit board space allowing it to easily fit into handles of various hair styling tools.

description

The OM1654A and IES5221A are monolithic bipolar control circuits featuring zero crossing triggering of triac in applications where switching is controlled by a resistive sensor such as a negative temperature coefficient (NTC). This characteristic allows OM1654A and IES5521A to be easily used in applications that require temperature control of a heating element such as in hair styling tools. The new IES5521A has an additional time out timer. The timeout timer is a safety feature incorporated into the integrated circuit. It refers to the operating time allowed before the IES5521A automatically switches the heating control off. The timeout timers can be controlled by the AC (50Hz or 60Hz) supply frequency for a nominal one-hour timeout. Other timeout time than one hour can be easily specified ranging from as low as one minute to over five hours to suit your particular timing needs by simply adding a resistor and capacitor in a RC timing circuit external to the integrated circuit. click here to learn more about the circuit performance.

application support

Examples of hair straightener circuitry For more information on the performance of OM1654A in a hair straightener application, please refer to Hair Straightener Application Circuit page. Additional application notes AN002 and AN004 are also available detailing the use of OM1654A. Engineering samples of OM1654A and IES5521A are currently available. Demonstration board HM231, a hair straightener/ curling irons circuitry built with OM1654A or IES5521A are also available. Both engineering samples and demonstration board can be requested via contact us.