1/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. charge protection ic series with built-in fet negative voltage protection type BD6046GUL descriptions BD6046GUL protects the devices from t he abnormal input voltage at the usb port. addition to the conventinal charge protection ic, it pr events the negative voltage happened by the usb reverse insertion without any additional compornents. rohm's original charge protection ic series enables to protect the abnormal input voltage from -30v to +30v. features 1) overvoltage protection up to 28v 2) negative voltage protection 3) internal low ron (250m ? ) fet 4) over voltage lockout (ovlo) 5) under voltage lockout(uvlo) 6) internal 2.5msec startup delay 7) over current protect 8) thermal shut down 9) small package: vcsp50l2(2.5mm x 2.5mm, height=0.55mm) applications mobile phones, mp3 players, digital still camera, pda, ic recorder, electronic dictionary, handheld game, game controller, camcorder, bluetooth headsets, etc absolute maximum ratings (ta=25 ) parameter symbol rating unit conditions input supply voltage 1 vmax1 -30 30 v in input supply voltage 2 vmax2 -0.3 7 v other power dissipation pd 975 mw operating temperature range topr -40 +85 storage temperature range tstr -55 +150 when using more than at ta=25 , it is reduced 7.8mw per 1 .(rohm specification board 50mm 58mm mounting.) recommended operating range (ta=-40 +85 ) parameter symbol range unit usage input voltage range v in 2.2 28 v this product is not especially designed to be protected from radioactivity. no.09031eat02
BD6046GUL technical note 2/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. electrical characteristics (unless otherwise noted, ta = 25 ?c, in=5v) parameter symbol rating unit conditions min. typ. max. electrical input voltage range vin - - 28 v supply quiescent current icc 35 70 a under voltage lockout uvlo 3. 42 3.6 3.78 v in=decreasing under voltage lockout hysteresis uvloh 50 100 150 mv in=increasing over voltage lockout ovlo 6.5 6.7 6.9 v in=increasing over voltage lockout hysteresis ov loh 50 100 150 mv in=decreasing current limit ilm 1.2 - - a vin vs. vout res. ron - 250 300 m ? flgb output low voltage flgbvo - - 400 mv sink=1ma flgb leakage current flgbleak - - 1 a timings (flgb pull up resistance 100k ? ) start up delay ton - 2.5 5 msec output turn off time toff - 2 10 sec alert delay tovp - 1.5 10 sec * this product is not especially designe d to be protected from radioactivity. block diagram :?:?::?::?:? :?:?:?:?:e :?: :?:-::| :|:?: :|:-::| :|:a:? :-:?:?:? :?::?::?:? :?:?:?:?::?:?:?: :?:?::?::?:? :?:?:?:?:e :?:?:?:?:w :?::::?: :?::?::?:? :?:?:?:?:?:?: :?: :?::?:? :|:?:? :|:?:? :?::? :|:?:? :?: :?:a:? :?: :?: :?: :?: :|:?:? :?:?:?:?:?:?:? ::-: fig. 1 block diagram pin number / pin name pin number pin name a3, a4,b3, b4,c4, d3,d4 in a1, b1,c1, d1 out d2 gnd a2 flgb
BD6046GUL technical note 3/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. package dimensions fig. 2 package dimensions (vcsp50l2) ball configuration fig. 3 ball configuration pin descriptions pin name function a3, a4, b3, b4, c4, d3, d4 in input voltage pin. a 1 ? f low esr capacitor, or larger must be connected between this pin and gnd a1, b1, c1, d1 out output voltage pin a2 flgb open-drain output pin that turns low when any protection event occurs. (overvoltage protection, thermal shut down) d2 gnd ground pin top view bottom view out out out gnd index in in 1 2 3 d c b out flgb in a in in in 4 in out out out gnd index in in 123 d c b out flgb in a in in in 4 in bd6046 lot no.
BD6046GUL technical note 4/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. typical application circuit 28v-ovp travel adapter charger ovp pmic in batt chgin out li-ion 1cell flgb gnd cpu cin 1.0uf cout 4.7uf fig. 4 application circuit ? safety is high because it detects, and it protects it for an abnormal voltage up to 28v. ? it contributes to the miniaturization because all external is built into.
BD6046GUL technical note 5/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. timing diagram fig. 5 start up sequence fig. 6 shutdown by over voltage detection fig. 7 recovery from overvoltage protection ovlo uvlo 1.5 se c 2.0 sec (toff) (tovp) in out flgb 5v 2.5msec in out 15v flgb 1 sec ovlo uvlo 2.5msec (ton) in out flgb
BD6046GUL technical note 6/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. notes foer use (1) absolute maximum ratings if applied voltage (vdd, vin), operating temperature range (top r), or other absolute maximum ratings are exceeded, there is a risk of damage. since it is not possible to identify short, open, or other damage modes, if special modes in which absolute maximum ratings are exceeded are assumed, consid er applying fuses or other physical safety measures. (2) recommended operating range this is the range within which it is possible to obtain roughly the expected characteristics. fo r electrical characteristics, it is those that are guaranteed under the conditions for each parameter. even when these are within the recommended operating range, voltage and temperatur e characteristics are indicated. (3) reverse connection of power supply connector there is a risk of damaging the lsi by reverse connection of the power supply connector. for protection from reverse connection, take measures such as exter nally placing a diode between the power supply and the power supply pin of the lsi. (4) power supply lines in the design of the board pattern, make power supply and gnd line wiring low impedance. when doing so, although the digital power supply and analog power supply are the same potential, separate the digital power supply pattern and analog power supply pattern to deter digital noise from entering the analog power supply due to the common impedance of the wiring patterns. similarly ta ke pattern design into acc ount for gnd lines as well. furthermore, for all power supply pins of the lsi, in conjun ction with inserting capacitors between power supply and gnd pins, when using electrolytic capacitors, determine constant s upon adequately confirming that capacitance loss occurring at low temperatures is not a problem for vari ous characteristics of the capacitors used. (5) gnd voltage make the potential of a gnd pin such that it will be the lowest potentia l even if operating below t hat. in addition, confirm that there are no pins for which the potential becomes less than a gnd by ac tually including transition phenomena. (6) shorts between pins and misinstallation when installing in the set board, pay adequate attention to or ientation and placement discrep ancies of the lsi. if it is installed erroneously, there is a risk of lsi damage. there also is a risk of damage if it is shorted by a foreign substance getting between pins or between a pin and a power supply or gnd. (7) operation in strong magnetic fields be careful when using the lsi in a strong magnetic field, since it may malfunction. (8) nspection in set board when inspecting the lsi in the set board, since there is a risk of stress to the lsi when capacitors are connected to low impedance lsi pins, be sure to discharge for each process. mo reover, when getting it on and off of a jig in the inspection process, always connect it after turning off the power supply, perform the inspection, and remove it after turning off the power supply. furthermore, as countermeasures against static electricity, use grounding in the assembly process and take appropriate care in transport and storage. (9) input pins parasitic elements inevitably are formed on an lsi structure du e to potential relationships. because parasitic elements operate, they give rise to interference with circuit operat ion and may be the cause of malf unctions as well as damage. accordingly, take care not to apply a lower voltage than gnd to an input pin or use the lsi in other ways such that parasitic elements operate. moreover, do not apply a voltage to an input pin when the power supply voltage is not being applied to the lsi. furthermore, when the power supply voltage is being applied, make each input pin a voltage less than the power supply voltage as well as within the gu aranteed values of electrical characteristics. (10) ground wiring pattern when there is a small signal gnd and a la rge current gnd, it is recommended that you separate the large current gnd pattern and small signal gnd pattern and provide single point grounding at the reference point of the set so that voltage variation due to resistance components of the pattern wiring and large currents do not cause the small signal gnd voltage to change. take care that the gnd wiring pattern of externally attached components also does not change. (11) externally attached capacitors when using ceramic capacitors for externally attached capacitors, determine constants upon taking into account a lowering of the rated capacitance due to dc bias and ca pacitance change due to factors such as temperature. (12) thermal shutdown circuit (tsd) when the junction temperature reaches the def ined value, the thermal shutdown circui t operates and turns a switch off. the thermal shutdown circuit, which is aimed at isolating the lsi from thermal runaway as much as possible, is not aimed at the protection or guarantee of the lsi. therefore, do not c ontinuously use the lsi with this circuit operating or use the lsi assuming its operation. (13) thermal design perform thermal design in which there are adequate margins by taking into account the permissible dissipation (pd) in actual states of use.
BD6046GUL technical note 7/7 www.rohm.com 2009.05 - rev.a ? 2009 rohm co., ltd. all rights reserved. ordering part number b d 6 0 4 6 g u l - e 2 part no. part no. bd6046 package gul : vcsp50l2 packaging and forming specification e2: embossed tape and reel (unit : mm) vcsp50l2 (BD6046GUL) 0.55max 0.10.05 2.500.05 1pin mark 2.500.05 s 0.06 s 3 0.50.05 2 (0.15)index post 4 c 1 0.50.05 b a p=0.53 p=0.53 d 13- 0.25 0.05 a b ba 0.05 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 3000pcs e2 () direction of feed reel 1pin
r0039 a www.rohm.com ? 2009 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redundancy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.
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