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datasheet 2/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series o rdering information b d x x e x x x x - m t r part o utput type reset voltage value counter timer package automotive accessories packaging and number 45 : open drain 23 : 2.3v delay time settings g : ssop5 forming specification 46 : cmos 0.1v step 5 : 50ms tr : embossed tape 48 : 4.8v 1 : 100ms and reel 2 : 200ms lineup table 1. open drain output type counter timer delay time settings 50ms 100ms 200ms detection voltage marking part number marking part number marking part number 4.8v a2 bd45e485 d1 bd45e481 f9 bd45e482 4.7v a1 bd45e475 c9 bd45e471 f8 bd45e472 4.6v yy bd45e465 c8 bd45e461 f7 bd45e462 4.5v yr bd45e455 c7 bd45e451 f6 bd45e452 4.4v yp bd45e445 c6 bd45e441 f5 bd45e442 4.3v yn bd45e435 c5 bd45e431 f4 bd45e432 4.2v ym bd45e425 c4 bd45e421 f3 bd45e422 4.1v yk bd45e415 c3 bd45e411 f2 bd45e412 4.0v yh bd45e405 c2 bd45e401 f1 bd45e402 3.9v yg bd45e395 c1 bd45e391 e9 bd45e392 3.8v yf bd45e385 b9 bd45e381 e8 bd45e382 3.7v ye bd45e375 b8 bd45e371 e7 bd45e372 3.6v yd bd45e365 b7 bd45e361 e6 bd45e362 3.5v yc bd45e355 b6 bd45e351 e5 bd45e352 3.4v yb bd45e345 b5 bd45e341 e4 bd45e342 3.3v ya bd45e335 b4 bd45e331 e3 bd45e332 3.2v uy bd45e325 b3 bd45e321 e2 bd45e322 3.1v ur bd45e315 b2 bd45e311 e1 bd45e312 3.0v up bd45e305 b1 bd45e301 d9 bd45e302 2.9v un bd45e295 a9 bd45e291 d8 bd45e292 2.8v um bd45e285 a8 bd45e281 d7 bd45e282 2.7v uk bd45e275 a7 bd45e271 d6 bd45e272 2.6v uh bd45e265 a6 bd45e261 d5 bd45e262 2.5v ug bd45e255 a5 bd45e251 d4 bd45e252 2.4v uf bd45e245 a4 bd45e241 d3 bd45e242 2.3v ue bd45e235 a3 BD45E231 d2 bd45e232 direction of feed reel ? order quantity needs to be multiple of the minimum quantity. datasheet 3/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series l ineup - continued table 2. cmos output type counter timer delay time settings 50ms 100ms 200ms detection voltage marking part number marking part number marking part number 4.8v k8 bd46e485 p7 bd46e481 1f bd46e482 4.7v k7 bd46e475 p6 bd46e471 1e bd46e472 4.6v k6 bd46e465 p5 bd46e461 1d bd46e462 4.5v k5 bd46e455 p4 bd46e451 1c bd46e452 4.4v k4 bd46e445 p3 bd46e441 1b bd46e442 4.3v k3 bd46e435 p2 bd46e431 1a bd46e432 4.2v k2 bd46e425 p1 bd46e421 y9 bd46e422 4.1v k1 bd46e415 n9 bd46e411 y8 bd46e412 4.0v h9 bd46e405 n8 bd46e401 y7 bd46e402 3.9v h8 bd46e395 n7 bd46e391 y6 bd46e392 3.8v h7 bd46e385 n6 bd46e381 y5 bd46e382 3.7v h6 bd46e375 n5 bd46e371 y4 bd46e372 3.6v h5 bd46e365 n4 bd46e361 y3 bd46e362 3.5v h4 bd46e355 n3 bd46e351 y2 bd46e352 3.4v h3 bd46e345 n2 bd46e341 y1 bd46e342 3.3v h2 bd46e335 n1 bd46e331 r9 bd46e332 3.2v h1 bd46e325 m9 bd46e321 r8 bd46e322 3.1v g9 bd46e315 m8 bd46e311 r7 bd46e312 3.0v g8 bd46e305 m7 bd46e301 r6 bd46e302 2.9v g7 bd46e295 m6 bd46e291 r5 bd46e292 2.8v g6 bd46e285 m5 bd46e281 r4 bd46e282 2.7v g5 bd46e275 m4 bd46e271 r3 bd46e272 2.6v g4 bd46e265 m3 bd46e261 r2 bd46e262 2.5v g3 bd46e255 m2 bd46e251 r1 bd46e252 2.4v g2 bd46e245 m1 bd46e241 p9 bd46e242 2.3v g1 bd46e235 k9 bd46e231 p8 bd46e232 datasheet 4/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series absolute maximum ratings parameter symbol limits unit power supply voltage v dd -gnd - 0.3 to +10 v output voltage nch open drain output vout gnd-0.3 to +10 v cmos output gnd-0.3 to v dd +0.3 output current i o 6 0 ma er pin voltage vct gnd-0.3 to v dd +0.3 v power dissipation *1,*2 pd 540 mw operating temperature topr -40 to +105 c ambient storage temperature tstg -55 to +125 c *1 reduced by 5.4mw/c when used over 25c. *2 when mounted on rohm standard circuit board (70mm70mm1.6mm, glass epoxy board). el ectrical characteristics (unless otherwise specified ta=-40 to 105c) parameter symbol condition limit unit min. typ. max. detection voltage v det v dd =h l , r l =470k ? ? h l , r l =470k ( v det (t)+0.5v) * 3 t plh :v dd =please set up the rise up time between v dd =0 v det more than 100s. a ttention: please connect ?er? to the gnd when not in use. datasheet 5/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series el ectrical characteristics (unless otherwise specified ta=-40 to 105c) ? continued parameter symbol condition limit u nit min. typ. max. operating voltage range v opl v ol datasheet 6/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series b lock diagrams fig.1 datasheet 7/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series t ypical performance curves fig.3 circuit current 0.0 0.5 1.0 1.5 2.0 0 1 2 3 4 5 6 7 8 9 10 v dd supply voltage datasheet 8/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series t ypical performance curves ? continued 0 5 10 15 20 0 1 2 3 4 5 6 7 8 9 10 er voltage ? datasheet 9/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series t ypical performance curves ? continued 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 -40 -20 0 20 40 60 80 100 temperature ?low? ?low? delay time : t plh [s] fig.13 output delay time ?low? ?high? 0 50 100 150 200 250 -60 -40 -20 0 20 40 60 80 100 120 tem per at u r e datasheet 10/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series application information ex planation of operation for both the open drain type (fig.15) and the cmos output type (fig.16), the detection and release voltages are used as t hreshold voltages. when the voltage applied to the v dd pins reaches the applicable threshold voltage, the v out terminal v oltage switches from either ?high? to ?low? or from ?low? to ?high?. because the bd45exxxx-m series uses an open drain output type, it is necessary to connect a pull-up resistor to v dd or another power supply if needed [the output ?high? v oltage (v out ) in this case becomes v dd or the voltage of the other power supply]. f ig.15 (bd45exxxx-m type internal block diagram) fig.16 (bd46exxxx-m type internal block diagram) reference data examples of leading (t plh ) and falling (t phl ) output pa rt number t plh [ms] t phl [s] bd45e275g-m 50 18 bd46e275g-m 50 18 v dd =2.2v 3.2v v dd =3.2v 2.2v *this data is for reference only. the figures will vary with the application, so please confirm actual operating conditions before use. t iming waveform example: the following shows the relationship between the input voltages v dd , the output voltage v out and er terminal when t he input power supply voltage v dd is made to sweep up and sweep down (the circuits are those in fig. 15 and 16). 1 when the power supply is turned on, the output is unstable from after over the operating limit voltage (v opl ) until t phl . t herefore it is possible that the reset signal is not outputted when the rise time of v dd is faster than t phl . 2 when v dd is greater than v opl but less than the reset release v oltage (v det + v det ), the output voltages will switch to low. 3 if v dd exceeds the reset release voltage (v det + v det ), the c ounter timer start and v out switches from l to h. 4 when more than the high level voltage is supplied er terminal, v out comes to ?l? after t plh delay time. therefore, a time when er t erminal is ?h? is necessary for 100sec or more. 5 when the er terminal switches to low, the counter timer starts to operate, a delay of t plh occurs, and v out switches from ?l? to ? h?. 6 if v dd drops below the detection voltage (v det ) when the power s upply is powered down or when there is a power supply fluctuation, v out switches to l (with a delay of t phl ). 7 the potential difference between the detection voltage and the release voltage is known as the hysteresis width ( v det ). the s ystem is designed such that the output does not toggle with power supply fluctuations within this hysteresis width, thus, preventing malfunctions due to noise. timing may change depending on application and use. please verify and confirm using practical applications. vref r1 r2 r3 v dd gnd oscillation circuit counter timer q1 v out v dd reset er q2 q1 vref r1 r2 r3 v dd gnd oscillation circuit counter timer v out r eset er fig.17 datasheet 11/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series c ircuit applications 1) examples of a common power supply detection reset circuit. ap plication examples of bd45exxxx-m series (open drain output type) and bd46exxxx-m series (cmos output type) are shown below. case1: power supply of microcontroller (v dd 2) differs f rom the power supply of the reset detection (v dd 1 ). u se an open drain output type (bd45xx series) device with a load resistance r l as shown fig.18. c ase2: power supply of the microcontroller (v dd1 ) is s ame as the power supply of the reset detection (v dd1 ). u se a cmos output type (bd46exxxx-m) device or an open drain output type (bd45exxxx-m) with a pull up resistor between the output and v dd1 . w hen a capacitance c l for noise filtering is connected to t he v out pin (the reset signal input terminal of the m icrocontroller), please take into account the waveform of the rise and fall of the output voltage (v out ). 2 ) the following is an example of a circuit application in which an or connection between two types of detection voltage resets the microcontroller. fig. 20 to reset the microcontroller when many independent power supplies are used in the system, or connect an open drain output type (bd45exxxx-m series) to the microcontroller?s input with pull-up resistor to the supply voltage of the microcontroller (v dd3 ) as shown in fig. 20. by pulling-up to v dd3 , output ?high? voltage of micro-controller power supply is p ossible. fig.18 open drain output type fig.19 cmos output type v dd1 v dd2 gnd bd45exxxx-m c l datasheet 12/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series 3 ) examples of the power supply with resistor dividers. in applications wherein the power supply voltage of an ic comes from a resistor divider circuit, an in-rush current will flow into the circuit when the output level switches from ?high? to ?low? or vice versa. in-rush current is a sudden surge of current that flows from the power supply (vdd) to ground (gnd) as the output logic changes its state. this current flow may cause malfunction in the systems operation such as output oscillations, etc. fig. 21 when an in-rush current (i1) flows into the circuit (refer to fig. 21) at the time when output switches from ?low? to ?high?, a voltage drop of i1r2 (input resistor) will occur in the circuit causing the vdd supply voltage to decrease. when the vdd voltage drops below the detection voltage, the output will switch from ?high? to ?low?. while the output voltage is at ?low? condition, in-rush current will stop flowing and the voltage drop will be reduced. as a result, the output voltage will switches again from ?low? to ?high? which causes an in-rush current and a voltage drop. this operation repeats and will result to oscillation. v out r2 v dd bd45exxxx-m bd46exxxx-m gnd r1 i1 v1 cin cl i dd v dd v det 0 i n-rush current fig. 22 current consumption vs. power supply voltage datasheet 13/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series operational notes 1) absolute maximum ratings operating the ic over the absolute maximum ratings may damage the ic. the damage can either be a short circuit between pins or an open circuit between pins. therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the ic is operated over the absolute maximum ratings. 2) ground voltage the voltage of the ground pin must be the lowest voltage of all pins of the ic at all operating conditions. ensure that no pins are at a voltage below the ground pin at any time, even during transient condition. 3) recommended operating conditions these conditions represent a range within which the expected characteristics of the ic can be approximately obtained. the electrical characteristics are guaranteed under the conditions of each parameter. 4) bypass capacitor for noise rejection to help reject noise, put a 1uf capacitor between v dd pin and gnd and 1000pf capacitor between v out pin and gnd. b e careful when using extremely big capacitor as transient response will be affected. 5) short between pins and mounting errors be careful when mounting the ic on printed circuit boards. the ic may be damaged if it is mounted in a wrong orientation or if pins are shorted together. short circuit may be caused by conductive particles caught between the pins. 6) operation under strong electromagnetic field operating the ic in the presence of a strong electromagnetic field may cause the ic to malfunction. 7) the v dd line impedance might cause oscillation because of the detection current. 8) a v dd to gnd capacitor (as close connection as possible) should be used in high v dd line impedance condition. 9 ) lower than the mininum input voltage puts the v out in high impedance state, and it must be v dd in pull up (v dd ) c ondition. 10) this ic has extremely high impedance terminals. small leak current due to the uncleanness of pcb surface might cause unexpected operations. application values in these conditions should be selected carefully. if the leakage of about 1m datasheet 14/14 t sz02201-0r7r0g300110-1- 2 ? 2013 rohm co., ltd. all rights reserved. 23.may.2013 rev.003 www.rohm.com tsz22111 ? ? bd45exxxx-m series bd46exxxx-m series revision history date revision changes 20.nov.2012 001 new release 18.dec.2012 002 change the value of ?counter timer delay? from 5ms to 50ms in table1 and table2. change unit of operating limit voltage graph from ua to v in typical performance curve. 23.may.2013 003 change limits for vdet at vdet=2.5v,3.0v,3.3v,4.2v,4.8v datasheet datasheet notice - rev.004 ? 2013 rohm co., ltd. all rights reserved. notice general precaution 1. before you use our products, you are requested to care fully read this document and fully understand its contents. rohm shall not be in any way responsible or liable for fa ilure, malfunction or accident arising from the use of any rohm?s products against warning, caution or note contained in this document. 2. all information contained in this document is current as of the issuing date and subjec t to change without any prior notice. before purchasing or using rohm?s products, please confirm the la test information with a rohm sales representative. precaution on using rohm products 1. if you intend to use our products in devices requirin g extremely high reliability (such as medical equipment, aircraft/spacecraft, nuclear power controllers, etc.) and whos e 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 writ ing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses in curred by you or third parties arising from the use of any rohm?s products for specific applications. 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following 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 products are not designed under any special or extr aordinary environments or conditi ons, as exemplified below. accordingly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any rohm?s products under an y 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 verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e 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 products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en 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 products in places subject to dew condensation 4. the products are not subjec t 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 per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range described in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. datasheet datasheet notice - rev.004 ? 2013 rohm co., ltd. all rights reserved. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used; if flow soldering met hod is preferred, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own indepen dent 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 product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect 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 products within the specified time after opening a humidity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her 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 information contained in this document. datasheet datasheet notice - rev.004 ? 2013 rohm co., ltd. all rights reserved. other precaution 1. the information contained in this document is provi ded on an ?as is? basis and rohm does not warrant that all information contained in this document is accurate and/or error-free. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or concerning such information. 2. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 3. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 4. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 5. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties. |
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