Datasheet 320mA LED Camera Flash Driver 2 With I C Compatible Interface BD6164GUT Key Specifications General Description Operating power supply voltage range: 2.7V to 4.5V The BD6164GUT is 320mA Flash LED driver with Quiescent Current: 1A (Typ.) Synchronous rectification step up DC/DC converter that Switching Frequency: 4.0MHz(Typ.) can drive 1 Flash LED. Operating temperature range: -30 to +85 2 It is possible to choice flash and torch current by I C I/F. Package W(Typ.) D(Typ.) H (Max.) Features Current regulation for LED Flash LED Current driver (260mA,280mA,300mA,320mA) Assist Light Function LED Current driver (52mA, 72mA) High efficiency : 85% (LED current 300mA, VBAT=3.6V, LED Vf=3.6V, o 4MHz mode,Ta=25 C) 2 I C Control I/F Synchronous rectification step-up DC/DC converter High switching frequency 4MHz VCSP60N1 Over Voltage Protection (OVP) 1.10mm x 1.50mm x 0.675mm In-rush current prevention (Soft Start) Over Current Protection (OCP) Under Voltage Lockout (UVLO) Over Temperature Protection (OTP) Applications Short-Circuit Fault detection (SCF) Torch light and flash for camera of mobile phone Internal generated power supply Pn Configuration Typical Application Circuit and Block Diagram BOTTOM VIEW CSCL SDA 1.0H Battery 2.2F SW B LED OUT VOUT VOUT 2 x 1.5F BD6164GUT SDA LEDOUT ASW GND Flash LED SCL GND 12 Product structure Silicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0G3G0C200280-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/17 TSZ22111 14 001 21.Dec.2012 Rev.001DatasheetDatasheet BD6164GUT o Absolute Maximum Ratings (Ta=25 C) Parameter Symbol Rating Unit *1 Maximum terminal voltage1VMAX1 7 V *2 Maximum terminal voltage2VMAX2 4.5 V *3 Power dissipation Pd 550 mW o Operating temperature range Topr -30 to +85 C o Storage temperature range Tstg -55 to +150 C *1 for SW, VOUT, LEDOUT *2 for SCL, SDA o o *3 This value will be acquired from a sample device, mounted on a PCB by ROHM. The temperature indicates the dissipation: 6.0 mW/ C (from Ta>25 C) o o Recommended Operating Ratings (Ta=-30 C to 85 C) Parameter Symbol Rating Unit Supply voltage 2.7 to 4.5 V Vin Electrical Characteristics o o (Unless otherwise noted, Ta = -30 C to+85 C, Vin=2.7V to 4.5V) Min. Typ. Max. Parameter Symbol Units Conditions 2 I C control terminals SDA/SCL Low Bus voltage1 VthL1 - - 0.1 V VthH1 1.71 - - High Bus voltage1 V High level Input current IinH1 - - 2 A SCL,SDA=1.8V IinL1 -2 - - A SCL,SDA=0.0V Low level Input current LED driver Shut down Quiescent current (shutdown) Iq,shdwn - 1 5 A (SDA/SCL = 0V) Stand by mode A Quiescent current (stand by) Iq,standby - 3 9 (SDA/SCL pull-up) % *2 LED current accuracy Iflash -7 0 7 LSB LED current accuracy INL INL -1 0 1 LSB LED current accuracy DNL DNL -1 0 1 Current source saturation Flash mode, LED V Vsat - 0.2 0.35 voltage current=300mA,VOUT=4.0V Inductor current limit Icoil 0.65 0.8 0.95 A *1 V VOUT terminal Over voltage limit Vovp 4.9 5.1 5.3 V VOUT terminal Output voltage range Vorng - - 4.7 V VOUT terminal Under voltage lockout Vuvlo 2.3 2.4 2.5 UVLO hysteresis Vhys 0.05 0.1 0.15 V 3.7 4.0 4.3 MHz Switching frequency Fsw 4MHz mode *1 This parameter is tested with DC measurement *2 In mass production, measured in the setting that register ASSISTCUR=0, MODE=0 www.rohm.com TSZ02201-0G3G0C200280-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/17 TSZ22111 15 001 21.Dec.2012 Rev.001