Error Amplifier suits power conversion applications.

Press Release Summary:




Model FOD2742 Optically Isolated Error Amplifier features tolerance as low as 0.5%. It incorporates optocoupler, precision reference, and error amplifier into 8-pin SOIC package. Unit provides isolated voltage feedback between secondary and primary sides of power conversion circuits for control and regulation purposes. Reference voltage tolerances include 0.5, 1, and 2%. Model FOD2742 has UL, CSA, VDE, and BSI safety agency certification.



Original Press Release:



Fairchild's Optically Isolated Error Amplifier Features Tolerance as Low as 0.5% in a Space Saving SOIC Package



FOD2742 is the 4th Member of Fairchild's Family of Optically Isolated Error Amplifiers for Power Conversion Applications

San Jose, CA - June 26, 2003 - Fairchild Semiconductor (NYSE: FCS) today announces the introduction of a new Optically Isolated Error Amplifier, the FOD2742. Its performance, including tolerance as low as 0.5%, and small size, make
it ideal for compact power supply and converter applications. The FOD2742 joins the FOD2712, FOD2711 and FOD2741 as the 4th member of Fairchild's family of Optically Isolated Error Amplifiers, which offer designers a selection of reference voltages, tolerances, isolation voltages, and package sizes.

Part Number     VREF    Best Tolerance     VISO      Package

FOD2712 1.24V 1% 2.5kV SOIC
FOD2411 1.24V 1% 5.0kV DIPS
FOD2742 2.5V 0.5% 2.5kV SOIC
FOD2741 2.5V 0.5% 5.0kV DIP8

As with all Fairchild Optically Isolated Error Amplifiers, the FOD2742 incorporates an optocoupler, precision reference,
and error amplifier into an 8-pin small outline package to provide isolated voltage feedback between the secondary and
primary sides of power conversion circuits for control and regulation purposes. This single component solution and choice
of reference voltage tolerances (0.5%, 1%, and 2%), allows engineers to optimize both space and performance to meet their
specific power design requirements.

Designers first should consider using the FOD2741 or FOD2742 error amplifiers, which are the functional equivalent of a
Fairchild KA431 shunt voltage regulator and a CNY17F-3 optocoupler, and offer a low temperature coefficient of 50 ppm/°C max. Fairchild's new FOD2742, available in an SOIC-8 package, should be considered for applications where space is limited. The FOD2712 or FOD2711 is the best option when a lower reference voltage is necessary. All four Fairchild Optically Isolated Error Amplifiers may be used in conjunction with a Fairchild Power Switch (FPS) and other Fairchild devices including MOSFETs, Power Factor Correction (PFC), and diodes to simplify power supplies and DC/DC converters. The FOD2742 has UL, CSA, VDE and BSI safety agency certification, and the 8-pin white, small outline package is available either in tubes of 50 units or in tape and reel packaging wvith a 500 unit (option RI) (quantity on a 7-inch (178 mm) diameter reel and a 2,500 unit (option R2) quantity on a 13-inch (330 mm) diameter reel.

Price: US $0.30 (1,000 pcs)
Availability: Immediate delivery of volume production

For more information about this product go to: fairchildsemi.com/whats_new/fod2742_nph.html. For
information on other Fairchild products, design tools, and sales contacts, please visit fairchild.semi.com.

Fairchild Semiconductor International:
Fairchild Semiconductor International (NTYSE: FCS) is a leading global supplier of high performance products for multiple end markets. With a focus on developing leading edge power and interface solutions to enable the electronics of today and tomorrow, Fairchild's components are used in computing, communications, consumer, industrial and automotive applications. Fairchild's 10,000 employees design, manufacture and market power, analog & mixed signal, interface, logic,
and optoelectronics products from its headquarters in South Portland, Maine, USA and numerous locations around the world. Please contact us on the web at www.fairchildsemi.com.

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