DIO5186CN24

Rev 1.1 DDIO51886 22MHz, 22A Duaal Channnel Fllash LEED Drivver FFeatures Deescriptions zz Dual Flaash LED Outtputs DIOO5186 is a BBoost-archittecture highh power flassh zz Drive Upp to Total 2AA or 1A per Channel LEDD driver, iideally for smart phhone camerra zz Up to 900% Efficienccy moodules or ddigital still camera mmodules. Thhe zz Integrated 2MHz Step-Up Convverter inteernal DC/DCC switch woorks at 2MHHz and needds zz 3V to 5VV Operation Voltage Range feww peripheral components, fitting for portable zz Very Smmall Inductor: 1.0H phooto flash solution. zz Indepenndent Flash Mode Enable and DIOO5186 has independent Flash mode annd Movie/TTorch Mode Enable Pinss Movie/Torch mmode enablle pins. Flaash mode is zz Flash Moode or Moviee/Torch Modde Dimming vvia usuually used wwith 600ms ttimer controol to generatte PWM Coontrol a hhigh intenssity flash. The Flashh mode annd zz One Ressistor Sets FFlash Mode LED Currennt Movie/Torch mmode LED cuurrent is proogrammed bby zz One Ressistor Sets MMovie/Torchh Mode LEDD extternal resisttors respecctively, making the flassh Current LEDD solution ssimple to control. If bothh enable pinns zz Integrated Thermal Regulation Control aree at logic high, the LED currrent will bbe zz 10kHz too 200kHz PWWM Dimminng Frequenccy proogrammed by the Movvie/Torch mmode settinng zz 600ms FFlash Timer Control ressistor. zz 330k PPull-Down RResistor on EENM and ENNF Theermal regulaation is inteegrated in Flash mode tto Pins limit the ICss temperatture and continuously zz LED Open or Short Protection proovide the maaximum alloowed outputt current. zz Output OOver-Voltagge Protection DIOO5186 has mmany protecction features, includinng zz Cycle-byy-Cycle Induuctor Current Limit cyccle-by-cycle input cuurrent limitt protectionn, zz 0.1 A Shutdown Cuurrent outtput over-vooltage protecction, LED ffault (open oor zz Availablle in Green QFN4*4-24 Package shoort) protection andd thermal shutdowwn zz -40C too +85C Opeerating Tempperature Range prootection. Thhe leakage current in shutdown is 0.1A. DIO51886 is availabble in Greeen QFN4*4-224 TTypical Applicaations pacckage. It opeerates over an ambientt temperaturre rannge of -40C to +85C. 1.0H PPower Flash LEDs 1A SW1 SSupply VOUTT1 C VIN1 IN1 C out1 2.2F 4.7F LEDD1 PGND1 Appplications GND RSETFF1 z Single Celll Li-Battery Powered Products R R SETM1 SETFF1 RSETMM1 Flash Enable ENF1 z Portable AAudio Playerrs Movie/Torch ENM1 Enable z Cellular Phhones DIO5186 1.0H PPower Flash LEDs 1A SW2 Supply z Personal MMedical Prooducts VOUTT2 C out2 VIN2 C IN2 4.7F 2.2F LEDD2 PGND2 GND RSETFF2 R R SETM2 SETFF2 RSETMM2 Flash Enable ENF2 Movie/Torch ENM2 Enable wwww.dioo.comm 2015 DIOO MICROCIRCUUITS CO., LTD DIO5186 V1.1 2MHz, 2A Dual Channel Flash LED Driver DDIO51886 OOrdering Informmation Order Paart Topp Marking TT Package A Numbeer DDIO5186 DIO5186CN224 Green -40 too +85C QFN44-24 Tape & Reel, 5000 PPin Asssignmennts SW1 NC PGND1 NC RSETM1 RSETF2 GND RSETM2 RSETF1 PGND2 NC SW2 NC FFigure 1 Pinn Assignmennt (Top Vieww) PPin Defiinitions PIN Pinn Name Descriiption MMovie and Torcch Mode Currennt Setting Pin 3 RSSETM1 4 RSSETF1 FFlash Mode Current Setting PPin 20 VVIN1 Innput Supply Pinn for the IC SSwitching Nodee of the Step-Up Converter 18 SW1 17 PGND1 PPower Ground Pin. 19 VVOUT1 OOutput Voltage Pin. 21 EENF1 FFlash Mode Enaable Pin. This pin has an inteernal 330k pull--down resistor tto GND. 22 EENM1 MMovie/Torch Moode Enable Pinn. This pin has an internal 3300k pull-down reesistor to GND. RRegulated Outpput Sink Currennt. Up to 1A current. 23 LLED1 15 RSSETM2 MMovie and Torcch Mode Currennt Setting Pin 16 RSSETF2 FFlash Mode Current Setting PPin 8 VVIN2 Innput Supply Pinn for the IC 6 SW2 SSwitching Nodee of the Step-Up Converter wwww.dioo.comm 2015 DIOO MICROCIRCUUITS CO., LTD DIO5186 V1.1 66 55 44 33 22 24 NC 7 OUT2 23 LED1 VIVINN22 88 22 ENM1 9 ENF2 21 ENF1 ENM2 10 20 VIN1 11 LED2 19 OUT1 12 NC 1313 1414 1515 1616 1717