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BZ6A7D06GM u?????e ?O???? 1/16 tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 14 ? 001 datasheet a3 a2 b2 c3 c2 a1 b1 c1 vout mode gnd en gnd vin gnd vin from controller from controller vout gnd gnd vin=2.3~5.5v one package regulator series 0.65a output, fully integrated, step-down switching power supply module bz6axx06gm series general description tne bz6axx06gm is a fully integrated power supply module that is useful for shortening the product at the design period and shortening the product launch tim e for electronics product, communication of portable it, and various applications industrial etc. bz6axx06gm is based on a high efficiency 6mhz synchronous step-down switching regulator. it provi des up to 0.65a load current and an input voltage range from 2.3v to 5.5v, optimized for battery powered portable applications. bz6axx06gm has a mode control pin that allows the user to select forced pwm(pulse width modulation) mode or pfm(pulse frequency modulation) and pwm auto change mode utilized power save operation at l ight load current. features no external components required smps fast transient response automatic pfm/pwm operation forced pwm operation internal soft start under voltage lockout over current protection thermal shutdown ultra small and low profile package lineup pin configuration(s) (top view) applications smart phones, cell phones, portable applications, pol applications, rf applications, and usb line application package(s) w(typ.) x d(typ.) x h(max.) bga-md 2.90mm x 2.30mm x 1.00mm bga-md typical application circuit(s) pin description(s) part no. output voltage bz6a1206gm 1.20v BZ6A7D06GM 1.25v pin no. symbol name function 1 a1 vout output pin 2 a2 vin power supply input pin 3 a3 vin power supply input pin 4 b1 mode forced pwm mode pin 5 b2 en enable pin 6 c1 gnd gnd pin 7 c2 gnd gnd pin 8 c3 gnd gnd pin figure 1. typical application circuit(s) index mark co cin coil figure 2. pin configuration(s)
2/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 block diagram(s) description of block(s) the bz6axx06gm are a synchronous step-down dc/dc conv erter that achieves fast transient response from li ght load to heavy load by hysteretic pwm control system and cur rent constant pfm control system. pwm control bz6axx06gm operates by hysteretic pwm control. this s cheme ensures fast switching, high efficiency, and fast transient response. when the output voltage is below the vref voltage, th e error comparator output is low to high and turnin g on p-channel mosfet until above the vref voltage and minimum on tim e. pfm control at light load the regulator and mode=low, the regulat or operates with reduced switching frequency and im proves the efficiency. during pfm operation, the output voltage slightly higher than typical output voltage. figure 4. operation of pfm mode and pwm mode figure 3. block diagram(s) gnd vin en + - shutdown tsd error comp fb frequency control uvlo vref switching control logic and gate driver mode pwm/pfm control l co vout 2.3 5.5v vout h on l off l pwm/pfm mode h pwm mode cin cin : c1005x5r0j225m co : c1005x5r0j475m l : mlp2012v1r0m
3/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 description of operations 1) shutdown if the en input pin set to low (<0.4v), all circuit a re 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 reduces in-rush current at start-up. typical start up time s with a 4.7uf output capacitor is 120usec. 3) current limit the bz6axx06gm has a current limit circuit that prot ects itself and external components during overload condition. 4) under voltage lock out (uvlo) the bz6axx06gm has a under voltage lock out circuit t hat 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 a nd output stability. do not leave the mode pin floating. 6) tsd the bz6axx06gm has a thermal shutdown feature to prot ect 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 has not been design to protect or gua rantee the ic. therefore, the user should not plan to activate this circuit w ith continued operation in mind. absolute maximum ratings (ta=25 ) *1 when mounted on the specified 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 power dissipation pd 0.75 *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 output current iout 0 0.65 a
4/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 electrical characteristic(s) (unless otherwise specified vin=3.6v, ta=25 ) item symbol rating unit condition min. typ. max. switching regulator output voltage accuracy vouta -2.5 - +2.5 % mode:h(pwm operation) -2.5 - +3.5 mode:l(pfm operation) soft start soft start time tss 65 120 240 usec control en pin control voltage operation venh 1.4 - vin v non operation venl 0 - 0.4 v mode pin control voltage operation vmodeh 1.4 - vin v forced pwm non operation vmodel 0 - 0.4 v automatic pfm/pwm uvlo protect threshold voltage uvth 1.95 2.05 2.15 v hysteresis uvhy 50 100 150 mv circuit current operating quiescent current iins - 45 72 ua en:h, mode:l, vout=3.6v forced not switching shutdown current shd - 0 1 ua en=0v
5/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 electrical characteristic curves (reference data) bz6a1206gm(1.20v output) figure 5. start up figure 6. shut down figure 7. load transient response 5ma to 200ma tr=tf=100ns, mode : low figure 8. load transient response 50ma to 350ma tr=tf=100ns, mode : low en 2v/div vout 500mv/div vout 500m/div en 2v/div 20us 100us vout 50mv/div 1.2v offset iout 200ma/div vout 50mv/div 1.2v offset iout 200ma/div 4us 10us
6/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 figure 11. pwm/pfm auto mode operation iout=100ma figure 12. pwm mode operation iout=100ma figure 9. pwm/pfm auto mode operation iout=50ma figure 10. pwm mode operation iout=50ma iout 100ma/div vout 50mv/div ac coupled vout 20mv/div ac coupled iout 100ma/div 2 us 2 us iout 100ma/div vout 50mv/div ac coupled vout 20mv/div ac coupled iout 100ma/div 2 us 2 us
7/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 figure 15. mode change response mode : low to high figure 16. mode change response mode : high to low figure 13. pwm/pfm auto mode operation iout=200ma figure 14. pwm mode operation iout=200ma vout 20mv/div ac coupled iout 100ma/div vout 50mv/div ac coupled iout 100ma/div 2us 2us mode 2v/div vout 50mv/div ac coupled vout 50mv/div ac coupled mode 2v/div 10 us 10 us
8/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 efficiency [%] load current [ma] 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 efficiency [%] load current [ma] 1.176 1.188 1.200 1.212 1.224 0 100 200 300 400 500 600 700 output voltage [v] load current [ma] 1.176 1.188 1.200 1.212 1.224 0 100 200 300 400 500 600 700 output voltage [v] load current [ma] figure 17. efficiency vs load current pwm/pfm auto mode figure 18. efficiency vs load current pwm mode figure 19. load regulation pwm/pfm auto mode figure 20. load regulation pwm mode vin=2.5v vin=3.6v vin=4.2 v vin=2.5v vin=3.6v vin=4.2 v vin=4.2 vin=3.6 vin=2.5 vin=4.2 vin=3.6 vin=2.5
9/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 electrical characteristic curves (reference data) BZ6A7D06GM(1.25v output) figure 21. start up figure 22. shut down figure 23. load transient response 5ma to 200ma tr=tf=100ns, mode : low figure 24. load transient response 50ma to 350ma tr=tf=100ns, mode : low en 2v/div vout 500mv/div vout 500m/div en 2v/div 20us 100us vout 50mv/div 1.2v offset iout 200ma/div vout 50mv/div 1.2v offset iout 200ma/div 4us 10us
10/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 figure 27. pwm/pfm auto mode operation iout=100ma figure 28. pwm mode operation iout=100ma figure 25. pwm/pfm auto mode operation iout=50ma figure 26. pwm mode operation iout=50ma iout 100ma/div vout 50mv/div ac coupled vout 20mv/div ac coupled iout 100ma/div 2 us 2 us iout 100ma/div vout 50mv/div ac coupled vout 20mv/div ac coupled iout 100ma/div 2 us 2 us
11/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 figure 31. mode change response mode : low to high figure 32. mode change response mode : high to low figure 29. pwm/pfm auto mode operation iout=200ma figure 30. pwm mode operation iout=200ma vout 20mv/div ac coupled iout 100ma/div vout 50mv/div ac coupled iout 100ma/div 2us 2us mode 2v/div vout 50mv/div ac coupled vout 50mv/div ac coupled mode 2v/div 10 us 10 us
12/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 efficiency[%] load current[ma] 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 efficiency[%] load current[ma] 1.2250 1.2375 1.2500 1.2625 1.2750 0 100 200 300 400 500 600 700 output voltage[v] load current[ma] 1.2250 1.2375 1.2500 1.2625 1.2750 0 100 200 300 400 500 600 700 output voltage[v] load current[ma] figure 33. efficiency vs load current pwm/pfm auto mode figure 34. efficiency vs load current pwm mode figure 35. load regulation pwm/pfm auto mode figure 36. load regulation pwm mode vin=2.5v vin=3.6v vin=4.2 v vin=2.5v vin=3.6v vin=4.2 v vin=4.2v vin=3.6v vin=2.5v vin=4.2v vin=3.6v vin=2.5v
13/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 pc board layout the suggested pcb layout for the bz6axx06gm is shown in figure. figure 38. pcb layout (mount side) figure 39. pcb layout (solder side) ( unit : mm ) 1.0 0.3 0.8 a1 pin figure 37. recommended land pattern (top view) figure 40. pcb circuit copper resist opening
14/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 caution of use 1) absolute maximum ratings an excess in the absolute maximum rating, such as su pply voltage, temperature range of operating condit ions, etc., can break down the devices, thus making impossible to i dentify breaking mode, such as a short circuit or a n open circuit. if any over rated values will expect to exceed the absolut e maximum ratings, consider adding circuit protecti on devices, such as fuses. 2) gnd voltage the potential of gnd pin must be minimum potential in all condition. as an exception, the circuit desi gn 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 m argin in light of the power dissipation (pd) in actu al operating conditions. 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 t here is any connection error or if pins are shorted together. 5) actions in strong electromagnetic field use caution when using the ic in the presence of a strong electromagnetic field as doing so may cause the ic to malfunction. 6) mutual impedance power supply and ground wiring should reflect consid eration of the need to lower mutual impedance and m inimize ripple as much as possible (by making wiring as short and thi ck as possible or rejecting ripple by incorporating inductance and capacitance). 7) thermal shutdown circuit (tsd circuit) this model ic has a built-in tsd circuit. this circu it is only to cut off the ic from thermal runaway, and has not been design to protect or guarantee the ic. therefore, the user should not plan to activate this circuit with cont inued operation in mind. 8) regarding input pin of the ic this monolithic ic contains p+ isolation and p subst rate layers between adjacent elements in order to k eep them isolated. p-n junctions are formed at the intersection of thes e p layers with the n layers of other elements, cre ating a parasitic diode or transistor. for example, as shown in the figures below, the relation between each potential is as f ollows: when gnd > pin a and gnd > pin b, the p-n junction ope rates as a parasitic diode. when gnd > pin b, the p-n junction operates as a para sitic transistor. parasitic diodes can occur inevitable in the structu re of the ic. the operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. accordingly, methods by which par asitic diodes operate, such as applying a voltage that is lower than the g nd (p substrate) voltage to an input pin, should no t be used. status of this document the japanese version of this document is formal spe cification. a customer may use this translation ver sion only for a reference to help reading the formal version. if there are any differences in translation version of this document formal version takes priority
15/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 ordering information b z 6 a x x 0 6 g m - tr part number frequency 6a : 6mhz output voltage 12 : 1.20v 7d : 1.25v output current 06 : 0.65a package gm: bga-md packaging and forming specification tr: embossed tape and reel physical dimension tape and reel information
16/16 datasheet bz6axx06gm series tsz02201-0f2f0a100020-1- 2 ? 2012 rohm co., ltd. all rights reserved. 24.jul.2012 rev.001 www.rohm.com tsz22111 ? 15 ? 001 ?s ?s ?s ?s date revision changes 24 .jul .2012 001 new release
datasheet d a t a s h e e t notice - rev.003 ? 2012 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) our products are designed and manufactured for applicat ion in ordinary electronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring extremel y high reliability (such as medical equipment, transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, 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 sale s representative in advance. unless otherwise agreed in writing by rohm in advance, ro hm 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 ro hm?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 designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products 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 bel ow), 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 temperature is within t he 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 d a t a s h e e t notice - rev.003 ? 2012 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 method 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 c onsidering 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 hum idity 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 contain ed 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 d a t a s h e e t notice - rev.003 ? 2012 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 way whatsoever the pr oducts 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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