View BU90054GWZ_8902101.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

product structure silicon monolithic integrated circuit this product is not designed protection against radioactive rays 1/ 15 tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm .com tsz22111 ? 14 ? 001 single - chip type with built - in fet switching regulator series 1.0a, step - down switching regulators with built - in power mosfet bu 90054 gwz general description the bu 90054 gwz are a high efficiency 6mhz synchronous step - down switching regulator with ultra low current pfm mode. it provides up to 1.0a load current and an input voltage range from 3.0v to 5.5v, optimized for battery powered portable applications. bu 90054 gwz has a mode control pin that allows the user t o select forced pwm(pulse width modulation ) mode or pfm(pulse frequency modulation) and pwm auto change mode utilized power save operation at light load current. features ? fast transient response ? automatic pfm/pwm operation ? forced pwm operation ? internal soft start ? under voltage lockout ? over curren t protection ? thermal shutdown lineup pin configuration (s) applications smart phones, cell phones, portable applications and micro dc/dc modules, usb accessories package (s) w(typ.) x d(typ.) x h(max.) ucsp30 l1 1.3 0mm x 0.9 0mm x 0.33 mm typical application circuit (s) pin descriptio n(s) part no. output voltage input voltage switching frequency operating mode mode=l mode=h bu90054 gwz 1.80 v 2.3v to 5.5v 4.8mhz to 6.0mh z automatic pfm/pwm forced pwm pin no. symbol function a1 vin power supply input pin a2 en enable pin a3 gnd gnd pin b1 mode forced pwm mode pin b2 lx inductor connection pin b3 fb feedback voltage input pin figure 1 . typical application circuit (s) (bottom view) figure 2 . pin configuration (s) gnd lx vin en fb 1.0uh 4.7uf vout mode 2.35.5v 4.7uf b1 mode b2 lx b3 fb a1 vin a2 en a3 gnd datashee t
2 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? block diagra m(s) ? de scription of block (s) the bu 90054 gwz are a synchronous step - down dc/dc converter that achieves fast transient response from light load to heavy load by hysteretic pwm control system and current constant pfm control system. ? pwm control bu 90054 gwz operates by hysteretic pwm control. this scheme ensures fast switching, high efficiency, and fast transient response. when the output voltage is below the vref voltage, the error comparator output is low to high and turning on p - channel mosfet until above the vref voltage and minimum on time. ? pfm control at light load the regulator and mode=low, the regulator operates with reduced switching frequency and improves the efficiency. during pfm operation, the output voltage slightly higher than typical output voltage. figure 4. op eration of pfm mode and pwm mode figure 3 . block diagra m(s) g n d l x v i n e n + - s h u t d o w n t s d e r r o r c o m p f b f r e q u e n c y c o n t r o l u v l o v r e f s w i t c h i n g c o n t r o l l o g i c a n d g a t e d r i v e r m o d e p w m / p f m c o n t r o l b 1 1 . 5 hz 0 . 4 7 u h 4 . 7 u f v o u t 2 . 3 hz 5 . 5 v v o u t h h f o n l h f o f f l h f p w m / p f m m o d e h h f p w m m o d e a 1 b 2 a 3 a 2 b 3 e n o u t p u t p w m m o d e v o l t a g e p f m m o d e a t l i g h t l o a d p f m t h r e s h o l d . t u r n o n p c h f e t p w m m o d e a t m o d e r a t e t o h e a v y l o a d s p f m ( c o n s t a n t c u r r e n t ) t h r e s h o l d . t u r n o f f p c h f e t
3 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? description of operations 1) shutdown if the en input pin set to low (<0.4v), all circuit are shut down and the regulator is standby mode. do not leave the en pin floating. 2) soft start function the regulator has a soft start circuit that reduc es in - rush current at start - up. typical start up times with a 4.7uf output capacitor is 120usec. 3) current limit the bu 90054 gwz has a current limit circuit that protects itself and external components during overload condition. 4 ) uvlo the bu 90054 gwz has a n under voltage lock out circuit that turn off device when vin>2.05v(typ.) 5) forced pwm mode setting mode pin high (>1.4v) places the regulator in forced pwm.this control provides noise reduction and output stability. do not le ave the mode pin floating. 6 ) tsd the bu 90054 gwz has a thermal shutdown feature to protect the device if the junction temperature exceeds 150 . in thermal shutdown, the driver is disabled. this circuit is only to cut off the ic from thermal runaway, and h as not been design to protect or guarantee the ic. t herefore, the user should not plan to activate this circuit with continued operation in mind . ? absolute maximum ratings ( ta=25 ) (*1) when mounted on the sp ecified pcb (55mm x 63mm), deducted by 3.9m w/c when used over ta=25c ? recommended operating rating (s) parameter symbol rating unit maximum input power supply voltage vin 7 v maximum voltage at en, fb, lx, mode ven, vfb, vlx, vmode 7 v power dissipation pd 0.39 *1 w operating temperature range topr - 40 to +85 storage temperature range tstg - 55 to +125 junction temperature tjmax +125 parameter symbol rating unit min. typ. max. input voltage vin 2.3 - 5.5 v
4 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? electrical characteristic ( s ) (unless otherwise specified vin= 3. 6 v, ta=25 ) item symbol rating unit condition min. typ. max. f? switching regulator f? output voltage accuracy vout a 1.764 1.800 1.836 v mode:h(pwm operation) 1.764 1.800 1.854 mode:l(pfm operation) maximum load current ioutmax1 - - 1.0 a 3.0v vin >: 5.5v ioutmax2 - - 0.8 a 2.7v vin >: 3.0v ioutmax3 - - 0.6 a 2.3v vin >: 2.7v f? soft start f? soft start time tss 65 120 240 usec f? frequency control f? switching frequency f osc 4.8 5.4 6.0 mhz no load , mode:h f? driver f? pchfet on resistance ronp 1 - 250 400 m ohm vin=5.0v ronp 2 300 450 m ohm vin=3.6v nchfet on resistance ronn 1 - 220 350 m ohm vin=5.0v ronn 2 250 380 m ohm vin=3.6v f? control f? en pin control voltage operation venh 1.4 - vin v non operation venl 0 - 0.4 v mode pin control voltage operatio n vmodeh 1.4 - vin v forced pwm non operation vmodel 0 - 0.4 v automatic pfm/pwm f? uvlo f? protect threshold voltage uvth 1.95 2.05 2.15 v hysteresis uvhy 50 100 150 mv f? current limit f? current limit threshold ilimit 1.5 1.7 1.9 a pmos current detect, o pen loop f? output discharge f? output discharge resistance dres 55 110 220 ohm en=0v f? circuit current f? operating quiescent current iins 1 - 45 65 ua en:h, mode:l, vout= 3.6 v forced not switching shutdown current shd - 0 1 ua en=0v
5 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? electrical c haracte ristic curves (reference data) parts l:lqm21mpn1r0ng0 (2.0mm1.6mm1.0mm murata) cout:grm155r60j475m(1.0mm0.5mm0.5mm murata) figure 5 . start up figure 6 . shut down figure 7 . load transient response 5m a to 200ma tr=tf=100ns, mode : low figure 8 . load transient response 50ma to 350ma tr=tf=100ns, mode :low vout 50mv/div ac coupled iout 200ma/div en 5 v/div vout 1v/div vout 50mv/div ac coupled iout 200ma/div en 5 v/div vout 1v/div il 200ma/div 40us 100us 4us 4us
6 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 figure 9 . loa d transient response 200ma to 600ma tr=tf=100ns, m ode : low figure 10 . pfm mode operat ion , i out=50ma figure 11 . pwm mode operation , iout=100ma figure 12 . mode change response mode : high to low mode 5 v/div vout 5 0mv/div ac coupled lx 200ma/div vout 2 0mv/div ac coupled lx 2v/div vout 50mv/div ac coupled iout 200ma/div vout 20mv/div ac coupled lx 2v/div 4us 80ns 400ns 4us
7 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 figure 13 . mode change response mode : low to high figure 15 . load regulation pwm/pfm auto mode fig ure 14 . efficiency vs load current pwm/pfm auto mode mode 5 v/div vout 5 0mv/div ac coupled lx 200ma/div 2us vin=2.7v vin=3.6v vin=4.2v vin=2.7v vin=3.6v vin=4.2v fig ure 16 . efficiency vs vin pwm/pfm auto mode , iout=1 25 ma l : dfe2520 12 c 1r0 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 efficiency[%] load current[ma] 1.764 1.782 1.800 1.818 1.836 1.854 0 200 400 600 800 1000 output voltage[v] load current[ma] 60 65 70 75 80 85 90 95 100 2.5 3 3.5 4 4.5 5 5.5 efficiency [%] vin [v]
8 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 figure 1 7 . frequency vs load current pwm/pfm auto mode figure 18 . frequency vs load current pwm mode operation 0 1 2 3 4 5 6 7 8 0 200 400 600 800 1000 frequency [mhz] load current [ma] 0 1 2 3 4 5 6 7 8 0 200 400 600 800 1000 frequency [mhz] load current [ma]
9 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? pc board layout the suggested pcb layout for the bu 90054 gwz are shown in figure. the following guidelines should be used to ensure a proper layout. 1) the input capacitor cin should be connect as closely possible to vin pin and gnd pin. 2) from the outp ut voltage to the fb pin line should be as separate as possible. 3) cout and l should be connected as closely as possible. the connection of l to the lx pin should be as short as possible. figure 1 9 . pcb layout ? external parts s election inductor selection the inductance significantly depends on output ripple current. as shown by following equation, the ripple current decreases as the inductor and/or switching frequ ency increase . f: switching frequency l: inductance % i l : inductor current ripple as a minimum requirement, the dc current rating of the inductor should be equal to the maximum load current plus half of the inductor current ripple as shown by the following equation. (vin - vout) ? vout % i l = l ? vin ? f % i l i lpeak = 2 i outmax + c i n l c o u t l x v i n g n d e n v o u t m o d e f b
10 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 1) recommended inductor selection iout 1a lqm2mpn1r0ng0 (2.0mm ? 1.6mm ? 1.0mm murata) mipsz2016d1r0fh (2.0mm ? 1.6mm ? 1.0mm fdk) dfe252012c1r0 (2.5mm ? 2.0mm ? 1.2mm toko) dfe252010 c1r0 (2.5mm ? 2.0mm ? 1.0mm toko) iout 0.6a lqm21pn1r0ngc (2.0mm1.2mm1.0mm murata) mipsz2012d1r0 (2 .0mm ? 1.2mm ? 1.0mm fdk) mipstz1608d1r0 (1.6mm ? 0.8mm ? 0.8mm fdk) mlp2012h1r0m (2.0mm1.2mm1.0mm tdk) ckp2012n1r0n (2.0mm1.2mm1.0mm taiyo yuden) 2) recommended input capacitor(cin) selection grm155r60j225m (1.0mm ? 0.5mm ? 0.5mm murata) grm155r60j475m (1.0mm ? 0. 5mm ? 0.5mm murata) grm155r60g106m (1.0mm ? 0.5mm ? 0.5mm murata) 3) recommended output capacitor(cout) selection grm155r60j475m (1.0mm ? 0.5mm ? 0.5mm murata) grm155r60g106m (1.0mm ? 0.5mm ? 0.5mm murata)
11 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? i/o equivalence circuit (s) a 2 e n b 1 m o d e b 2 l x b 3 f b v i n v i n v i n v i n
12 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? caution of use 1) absolute maximum ratings an excess in the absolute maximum rating, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify b reaking mode, such as a short circuit or an open circuit. if any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit pro tection devices, such as fuses. 2) gnd voltage the potential of gnd pin must be minimum poten tial in all condition. as an exception, the circuit design allows voltages up to - 0.3 v to be applied to the ic pin. 3) thermal design use a thermal design that allows for a sufficient margin in light of the power dissipation (pd) in actual operating con ditions. 4) inter - pin shorts and mounting errors use caution when positioning the ic for mounting on printed circuit boards. the ic may be damaged if there is any connection error o r if pins are shorted together. 5) actions in strong electromagnetic fie ld use caution when using the ic in the presence of a strong electromagnetic field as doing so m ay cause the ic to malfunction. 6) mutual impedance power supply and ground wiring should reflect consideration of the need to lower mutual impedance and minim ize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporati ng inductance and capacitance). 7) thermal shutdown circuit (tsd circuit) this model ic has a built - in tsd circuit. this circuit is only to c ut off the ic from thermal runaway, and has not been design to protect or guarantee the ic. t herefore, the user should not plan to activate this circuit with continued operation in mind . 8) regarding input pin of the ic this monolithic ic contains p+ isol ation and p substrate layers between adjacent elements in order to keep them isolated. p - n junctions are formed at the intersection of these p layers with the n layers of other elements, creating a parasitic diode or transistor. for example, as shown in t he figures below, the relation between each potential is as follows: when gnd > pin a and gnd > pin b, the p - n junction operates as a parasitic diode. when gnd > pin b, the p - n junction operates as a parasitic transistor. parasitic diodes can occur inevita ble in the structure of the ic. the operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. accordingly, methods by which parasitic diodes operate, such as applying a voltage that is lower tha n the gnd (p substrate) voltage to an input pin, should not be used. 9) d isturbance light in a device where a portion of silicon is exposed to light such as in a wl - csp, ic characteristics may be affected due to photoelectric effect. for this reason, it is recommended to come up with countermeasures that will prevent the chip from being exposed to light. status of this document the japanese version of this document is formal specification. a customer may use this translation version only for a refere nce to help reading the formal version. if there are any differences in translation version of this document formal version takes priority
13 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? ordering informatio n b u 9 0 0 5 4 g w z e 2 part number packa ge gwz: ucsp30 l1 packaging and forming specification e2: embossed tape and reel ( ucsp30 l1) ? marking diagram (s)(top view) u c s p 3 0 l 1 ( t o p v i e w ) a d h 1 p i n m a r k l o t n u m b e r p a r t n u m b e r m a r k i n g
14 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? physical dimension tape and reel information package name ucsp30l1 ( BU90054GWZ ) < tape and reel i nformation > tape embossed carrier tape quantity 6000 p cs direction of feed e2 the direction is the pin 1 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 >& unit >8 mm >' reel direction of feed 1pin 1234 1234 1234 1234 1234 1234 2 0 . 25 0 . 05 0 . 9 0 0 . 0 5 a a 3 1 pin mark b 0 . 3 3 m a x 0 . 2 5 0 . 0 5 s 0 . 06 1 . 30 0 . 05 1 6 - 0 . 20 0 . 05 b 0 . 4 0 . 0 6 b p = 0 . 4 2 a 0 . 05 s adh lot no .
15 / 1 5 b u90054 gwz tsz02201 - 0f1f0ag00060 - 1 - 2 ? 20 14 rohm co., ltd. all rights reserved. 8.dec.2014 rev.002 www.rohm.com tsz22111 15 001 ? revision history date revi sion changes 29 .jul. 20 14 001 new release . 8 .dec.2014 002 page10 recommended inductor selection dfe252010 c1r0 added. page12 caution of use 9) d isturbance light added.
notice - ge rev.00 3 ? 20 13 rohm c o., ltd. all rights reserved. notice precaution on using rohm products 1. our p roducts are designed and manufactured for application in ordinary electronic equipment s ( such as av equipment, oa equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). if you intend to use our products in devices requiring extremely high reliability ( such as medical equipment ( n ote 1 ) , transport equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car a ccessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life , bodily injury or serious damage to property ( specific applications ) , please consult with the rohm sales representative in advance. unless otherwise agreed in writing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any rohm s products for specific applications. ( n ote1) m edical e quipment c lassifica tion of the s pecific applications japan usa eu china class 2 . rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a cert ain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail - safe design against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the f ollowing are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3 . our p roducts are de signed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below . accordingly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arisi ng from the use of any rohms p roduct s under any special or extraordinary environments or conditions . if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent v erification and confirmation of product performance, reliability, etc, prior to use, must be necessary : [a] use of our products in any types of liquid, including water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the p roducts are exposed to direct sunlight or dust [c] use of our products in places where the p roducts are exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the p roducts are exposed to static electr icity or electromagnetic waves [e] use of our products in proximity to heat - producing components, plastic cords, or other flammable items [f] s ealing or coating our p roducts with resin or other coating materials [g] use of our products without cleaning res idue of flux (even if you use no - clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water - soluble cleaning agents for cleaning residue after soldering [h] use of the p roducts in places subject to dew cond ensation 4 . the p roducts are not subject to radiation - proof design . 5 . please verify and confirm characteristics of the final or mounted products in using the products. 6 . in particular, if a transient load (a large amount of load applied in a short pe riod of time, such as pulse . is applied, confirmation of performance characteristics after on - board mounting is strongly recommended. avoid applying power exceeding normal rated power; exceeding the power rating under steady - state loading condition may neg atively affect product performance and reliability. 7 . de - rate power dissipation (pd) depending on ambient temperature (ta). when used in sealed area, confirm the actual ambient temperature. 8 . confirm that operation temperature is within the specified range described in the product specification. 9 . rohm shall not be in any way responsible or liable for f ailure induced under deviant condition from what is defined in this document . precaution for mounting / circuit board design 1 . when a highly activ e halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2 . in principle, the reflow soldering method must be used on a surface - mount products, the flow soldering method must be us ed on a through hole mount products. i f the flow soldering method is preferred on a surface - mount products , please consult with the rohm representative in advance. for details , please refer to rohm mounting specification
notice - ge rev.00 3 ? 20 13 rohm c o., ltd. all rights reserved. precautions regarding application examples and external circuits 1 . if change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the p roducts and external components, including transient characteristics, as well as static characteristics. 2 . you agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for products use . therefore, in case you use such information, you are solel y responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this p roduct is e lectrostatic sensitive product, which may be damaged due to e lectrostatic discharge. please take proper caution in your manufacturing process and stor age so that voltage exceeding the product s maximum rating will not be applied to p roducts. please take special care under dry condition (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, setting of ionizer, friction preve ntion and temperature / humidity control). precaution for storage / transportation 1 . product performance and soldered connections may deteriorate if the p roducts are stored in the places where : [a] the p roducts are exposed to sea winds or corrosive gases , including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to direct sunshine or condensation [d] the products are exposed to high electrostatic 2 . even under rohm recommended sto rage condition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm solderability before using p roducts of which storage time is exceeding the recommended storage time period. 3 . store / transport cartons in the correct direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4 . use p roducts within the specified time after opening a humidity barrie r bag. baking is required before using p roducts of which storage time is exceeding the recommended storage time period . precaution for p roduct l abel qr code printed on rohm p roduct s label is for rohm s internal use only . precaution for d isposition when d isposing p roducts please dispose them properly using a n authorized industry waste company. precaution for foreign e xchange and foreign t rade act since our products might fall under controlled goods prescribed by the applicable f oreign exchange and f oreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1 . all i nformation and data including but not limited to application example contained in this document is for reference only. rohm do es not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of a ny third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intel lectual property rights or other damages arising from use of such information or data. : 2 . no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the informat ion contained in this document. other precaution 1 . this document may not be reprinted or reproduced, in whole or in part, without prior written consent of rohm. 2. the products may not be disassemble d, converted, modified, reproduced or otherwise chang ed without prior written consent of rohm. 3 . i n no event shall you use in any way whatsoever the products and the related technical information contained in the products or this document for any military purposes , including but not limited to, the develop ment of mass - destruction weapons . 4 . the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2014 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.

▲Up To Search▲

Price & Availability of BU90054GWZ

	To Download BU90054GWZ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .