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| toshiba TB62733FTG toshiba bi-cmos integrated circuit silicon monolithic TB62733FTG charge pump type dc/dc conver ter for white led driver application charge pump type dc/dc co nverter / white led driver features TB62733FTG is charge pump type dc to dc converter that is accept from 2.8 up to 4.2v input and continue to up converting operation until fb terminal is equal to 0.4v. (1.5 times up converting) this device provides over 190ma at vin=3.9v as the maximum current, and two outputs structure may help to design the backlighting system such as the system having two displays that are main and sub lcd displays. also, this is used for the power supply of flash lighting by using two outputs at the same time. function 1.5 times charge pump type step up dc to dc converter features ? utilize bi-cmos process ? package : vqon24(leadless type) ? input voltage : 2.8v (min) ? output voltage : 4.0v (min) ? output current ability : greater than 190ma (usual state) ? 4 steps brightness control (25%, 50%, 75%, 100%) ? auto discharge function equipped ? integrated protection circuit tsd (thermal shut down ) a pp lication dia g ram vin gnd fb1 sp1 sp1 c3 2.0 f 2.8 5.5v c4 1.0 f vout1 c1 c1 c1 1.0 f brightness control ( ste p s ) c2 c2 c2 1.0 f qon24-0404-0.65 weight 0.0g (typ.) ce1 ce2 on/off control fb2 vout2 vout0 company headquarters 3 northway lane n orth la t ham , new york 12110 toll free: 800.984.5337 fax: 518 .785 . 47 25 web: www.marktechopto.com | email: info@marktechopto.com california sales office: 950 south coast drive, suite 265 costa mesa, california 92626 toll free: 800.984.5337 fax: 714.850.9314 company headquarters 3 northway lane n orth la t ham , new york 12110 toll free: 800.984.5337 fax: 518 .785 . 47 25 web: www.marktechopto.com | email: info@marktechopto.com california sales office: 950 south coast drive, suite 265 costa mesa, california 92626 toll free: 800.984.5337 fax: 714.850.9314
toshiba TB62733FTG h terminal number terminal name function comments 1 nc 2 vout 1 c1+ c1- vin c2- c2- sp2 sp1 vout0 nc ce1 ce2 vin control logic gnd on/off c1+ c1 9 vout1 c2+ c2 9 fb1 sp1 sp2 fb2 feed back circuit fb1 9? prioritize fb2 9? in case "vout 9y " not in use vout2 ce1 ce2 vout0 p-gnd toshiba TB62733FTG h 9 absolute maximum ratings item symbol conditions ratings unit power supply vin 9 9 0.3 :* 6.0 v input voltage vin2 fb/ce/sp terminal 9 0.3 :* vin+0.3 v output current iout 9 250 ma power dissipation 99e without pcb with pcb 357 tbd :: operating temperature t opr 9 9 25 :* 85 ` storage temperature t stg 9 9 55 :* 150 ` junction temperature t j 9 150 ` * when the ambient temperature is excess 25 degree c, it should be derating with 1.24mw/degree c. 9 recommended operating conditions 9? topr = -25 ? 85 degree c 9? item symbol conditions min. typ. max. unit power supply vin 9 2.8 5.5 v logic input voltage v ce 0 9 vin v input ripple voltage vin(ripple) 9 9 9 40 mvpp capacitance for charge pump c1/2 0.8 1.0 4.0 ? f toshiba TB62733FTG h toshiba TB62733FTG h toshiba TB62733FTG h z in case of output capacitance c3 is connected to vout0, capacitance c3 connecting to vout1 and vout2 may be omitted. however, if you have to care about output ripple, it is better c3 connect to each vout1and vout2. this device has a capability of variable control for feed back voltage by using two input such as sp1 and sp2. two kind of feed back terminal exist and the following feed back control is performed. 1. operating both vout1 and vout2 : out1 is controlled by feed back terminal 1. (fb1) no feed back operation for out2 2. operate vout1 only : operation by feed back terminal 1 (fb1) 3. operate vout2 only : operation by feed back terminal 2 (fb2) fb1 c3 2.0 ? f vout1 r x fb2 c3 2.0 ? f vout2 r x feed back control 1 1. operate both vout1 and vout2 fb1 c3 2.0 ? f vout1 r x fb2 c3 2.0 ? f vout2 r x feed back control 1 9t9 vout 1 operating led on led on led on feed back control 2 led off toshiba TB62733FTG h toshiba TB62733FTG h toshiba TB62733FTG h toshiba TB62733FTG h the characteri sti c s o f p o w e r d i ssi pati on a ssbl ed on p c b 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 0. 7 0. 8 0. 9 0 25 50 75 100 125 150 am bi e n t t e m p e ra tu re [ power dissipation toshiba TB62733FTG h 2. 0 2. 2 2. 4 2. 6 2. 8 3. 0 3. 2 3. 4 3. 6 3. 8 4. 0 2. 53. 03. 54. 04. 5 in p u t v o l tage [v ] output voltage [v ] i o=200m a i o=100m a i o=40m a 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 2. 53. 03. 54. 04. 5 in p u t v o l tage [v ] i o= 40m a i o=100m a i o=200m a o utput v ol tage o pe rate abi l i ty 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 0 50 100 150 200 250 300 o u tpu t c u rre n t [m a } output voltage [v ] vi n=2. 7v vi n=3. 0v vi n=3. 3v f e e dbac k v o l tage v =0. 4v 220. 0 240. 0 260. 0 280. 0 300. 0 320. 0 340. 0 360. 0 380. 0 400. 0 420. 0 2. 53. 03. 54. 04. 5 in p u t v o l tage [v ] feedback voltage [mv] i o=200m a i o=100m a i o=40m a toshiba TB62733FTG h |
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