Allegro | Product | A8731 Mobile Phone Xenon Photoflash Driver with IGBT Gate Driver Page 1 of 2 Home / Products / Part Numbers / A8731 A8731 Mobile Phone Xenon Photoflash Driver with IGBT Gate Driver Data sheet z Contact Allegro Marketing Features z z z Primary side sense technology Dual-trigger option 3 x 3 10 pin TDFN package Applications z Cell phone camera modules Description The Allegro(R) A8731 Xenon photoflash charger IC is designed to meet the needs of ultra-low power, small form factor cameras, particularly camera-phones. The charge time is adjustable by setting the charge current limit from 0.4 to 1.2 A maximum. By using primary-side voltage sensing, the need for a secondary-side resistive voltage divider is eliminated. This has the additional benefit of reducing leakage currents on the secondary side of the transformer. To extend battery life, the A8731 features very low supply current draw-typically 0.01 A in shutdown mode and 10 A in standby mode. The A8731 has a flash dual trigger IGBT driver. The A8731 is available in a 10-contact 3 mm x 3 mm TDFN/MLP package with a 0.75 nominal overall package height, and an exposed pad for enhanced thermal performance. Application Circuit http://www.allegromicro.com/en/Products/Part_Numbers/8731/ 9/14/2009 Allegro | Product | A8731 Mobile Phone Xenon Photoflash Driver with IGBT Gate Driver Page 2 of 2 Complete Part Numbers Part Number Package Type A8731EEJTR-T 10-lead MLP RoHS Part Composition/ Compliant RoHS Data Yes view data Temperature -40 C to 85 C Comments new Samples Distributor Stock Contact Local Sales Representative or check distributor stock Check Stock Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system. Copyright (c) 2009 Allegro MicroSystems, Inc. * 115 Northeast Cutoff, Worcester, MA 01606 USA * Phone: 1.508.853.5000 * Fax: 1.508.853.7895 http://www.allegromicro.com/en/Products/Part_Numbers/8731/ 9/14/2009