1/8 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved. cmos ldo regulator series for portable equipments standard cmos ldo regulators large current 300ma cmos ldo regulators bh \\ ma3whfv series bh \\ fb1wg series, bh \\ fb1whfv series, bh \\ lb1wg series, bh \\ lb1whfv series 1) high accuracy output voltage: 1% 2) high ripple rejection ratio: 70 db (bh \\ fb1whfv/wg, bh \\ lb1whfv/wg) 3) low dropout voltage: 60 mv (when current is 100 ma) (bh \\ ma3whfv) 4) stable with ceramic output capacitors 5) low bias current : 40 a (i o = 50 ma) (bh \\ fb1whfv/wg) 6) output voltage on/off control 7) built-in over-current protection and thermal shutdown circuits 8) ultra-small power package: hvsof5 (bh \\ fb1whfv, bh \\ lb1whfv) 9) ultra-small power package: hvsof6 (bh \\ ma3whfv) battery-driven portable devices and etc. the bh \\ fb1w, bh \\ lb1w and bh \\ ma3w series are low dropout cmos regulators with 150 ma and 300 ma output that have 1% high accuracy output voltage. the bh \\ fb1w series combines 40 a low current consumption and a 70 db high ripple rejection ratio by utilizing output level cmos technology. the components can be easily mounted into the small standard ssop5 and the ultra-small hvsof5/hvsof6 packages. part number: b h \\ f b 1 w \ , b h \\ l b 1 w \ ab ab part number: b h \\ m a 3 w \ ab symbol a b details output voltage designation g : ssop5 hfv : hvsof5 \\ 15 18 1j 25 28 \\ 29 30 31 33 output voltage (v) 1.5v (typ.) 1.8v (typ.) 1.85v (typ.) 2.5v (typ.) 2.8v (typ.) output voltage (v) 2.9v (typ.) 3.0v (typ.) 3.1v (typ.) 3.3v (typ.) package: symbol a b details output voltage designation hfv : hvsof6 \\ 15 18 25 28 \\ 29 30 31 33 output voltage (v) 1.5v (typ.) 1.8v (typ.) 2.5v (typ.) 2.8v (typ.) output voltage (v) 2.9v (typ.) 3.0v (typ.) 3.1v (typ.) 3.3v (typ.) package: part number bh \\ fb1wg bh \\ fb1whfv bh \\ lb1wg bh \\ lb1whfv 1.5 - - 1.8 - - 1.85 - - - 2.5 - - 2.8 - - 2.9 - - 3.0 - - 3.1 - - 3.3 - - package ssop5 hvsof5 ssop5 hvsof5 150ma bh \\ fb1w and bh \\ lb1w series 300ma bh \\ ma3whfv series part number bh \\ ma3whfv 1.5 1.8 2.5 2.8 2.9 3.0 3.1 3.3 package hvsof6 description features applications line up no.10020ect02
absolute maximum ratings (ta = 25 c) applied supply voltage power dissipation operating temperature range storage temperature range parameter symbol limits unit vmax pd topr tstg 680 (hvsof6) 410 (hvsof5) 540 (ssop5) ~ + 85 + 125 - 40 - 55 + 6.5 - 0.3 ~ ~ mw c c v conditions ceramic capacitor recommended ceramic capacitor recommended - input capacitor cin 0.1 - - - f output capacitor noise decrease capacitor co cn 1.0 0.01 0.22 - f ceramic capacitor recommended f recommended operating conditions parameter min. max. unit typ. symbol power supply voltage output current vin iout - -- 2.5 5.5 300 v ma -- 150 ma -- 150 ma recommended operating range parameter min. max. unit typ. symbol bh ma3w bh fb1w bh lb1w bh ma3whfv parameter symbol min. typ. max. unit conditions i out =1ma i out =1ma stby=0v vrr= - 20dbv, frr=1khz, i out =10ma v in =0.98 x v out , i out =100ma v in =v out +0.5v to 5.5v i out =1ma to 100ma i out =1ma to 300ma i out =1ma, ta= - 40 to + 85 c v out i gnd i stby rr vsat1 vdl1 vdl01 vdl02 ilmax i short - - - - - - - - - - 65 - 60 60 2 6 18 100 600 100 95 1.0 - 90 20 30 90 - - - v a a db mv mv mv mv ppm/ c ma m a v ou t vo=v out x 0.85 v o=0v bh fb1whfv/wg , bh lb1whfv/wg parameter symbol min. typ. max. unit conditions output voltage circuit current circuit current(stby) ripple rejection ratio load response 1 load response 2 dropout voltage line regulation i out =1ma i out =50ma stby=0v vrr= - 20dbv, frr=1khz, i out =10ma i out =1ma to 30ma i out =30ma to 1ma v in =0.98 v out , i out =100ma v in =v out + 0.5v to 5.5v i out =1ma to 100ma i out =1ma to 150ma vout i gnd i stby rr ltv1 ltv2 vsat vdl1 vdl01 vdl02 v out 40 - 70 50 50 250 2 10 15 250 300 50 40 1100 - - v out 1.01 70 1.0 - - - 450 20 30 90 420 450 v a a db mv mv mv mv mv ma stby control voltage on off v out 0.99 - - - - - - - - - - - 1 3 4 vo=v out 0.98 v o=0v stby pull-down resistor short current over current protection limit current load regulation (1 ) load regulation (2 ) ilmax i short rstb vstbh vstbl 550 1.5 - 0.3 2200 vcc 0.3 k v v ma ma 3 5 150 150 3 5 3 5 5 bh25,28,29,30,31,33whfv/g - - 3 5 2/8 technical note bh fb1wg series, bh fb1whfv series, bh lb1wg series, bh lb1whfv series, bh ma3whfv series 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reser ved.
3/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series 2 1.5 1 0.5 0 4 3 2 1 0 input voltage v in [v] input voltage v in [v] out p ut v oltage v out [v ] 60 50 40 30 20 10 0 60 50 40 30 20 10 0 i np ut vo lt ag e v in [v] input voltage v in [v] [dngi tnerruc dng a ] 100 80 60 40 20 0 input voltage v in [v] gnd current ignd[ a ] 4 3 2 1 0 input voltage v in[ v] out p ut vol t age v out [v ] out p ut vol t age v out [v] [dngi tnerruc dng a ] 2 1.5 1 0.5 0 3.5 3 2.5 2 1.5 1 0.5 0 output current i out [ma] out p ut vol t age[v] out p ut v oltage v out [v ] 3.5 3 2.5 2 1.5 1 0.5 0 output current i out [ma ] out p ut v oltage v out [v] output current i out [ma ] 500 400 300 200 100 0 output current i out [ma] dropout volt age vsa t[ m v ] 300 250 200 150 100 50 0 output current i out [ma] dropout volt age vsat[mv ] ~ condition ~ vin=0 to 5.5v ci n = 0.1 f co = 1.0 f rou t= 1 . 5 k ta = 2 5 c bh15lb1whfv ~ condition ~ vin=0 to 5.5v ci n = 0 .1 f co = 1 .0 f rou t= 2 . 8 k ta = 2 5 c bh28fb1whfv ~ condition ~ vin=0 to 5.5v ci n = 1.0 f co = 1 .0 f cn = n o n e rou t= 3 . 0 k ta = 2 5 c bh30ma3whfv ~ condition ~ vin= 0 to 5.5v ci n = 0.1 f co = 1.0 f rou t= 1 . 5 k ta = 2 5 c bh15lb1whfv ~ c on di ti on ~ vin= 0 to 5.5v ci n = 0.1 f co = 1.0 f rou t= 2 . 8 k ta = 2 5 c bh28fb1whfv ~ condition ~ vin= 0 to 5.5v ci n = 1.0 f co = 1.0 f cn = n o n e rou t= 3 . 0 k ta = 2 5 c bh30ma3whfv ~ condition ~ vin=3.5v vout=1.53v to 0v cin=0.1f co=1.0f ta = 2 5 c bh15lb1whfv ~ condition ~ vin=3.8v vout=2.83v to 0v cin=0.1f co=1.0f ta = 2 5 c bh28fb1whfv ~ condition ~ vin=4.0v vout=3.03v to 0v cin=1.0f co=1.0f cn=none ta = 2 5 c bh30ma3whfv ~ condition ~ vin=2.74v iout=0 to 150ma ci n = 0.1 f co = 1.0 f ta = 2 5 c bh28fb1whfv ~ condition ~ vin=2.940v iout=0 to 300ma ci n = 1 .0 f co = 1.0 f cn = n o n e ta = 2 5 c bh30ma3whfv ? out put volt age - input voltage ? gnd current - input voltage fi g .2 fi g .1 fi g .5 fi g .4 fi g .6 fi g .3 fi g .7 fi g .9 fi g .8 fi g .10 fi g .11 ? out put volt age - output current ? dropout voltage - output current ty p i c al c h ar ac t e r i st i c s 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0y 0.5 1 1.5 2 2.5 3 3.5 y 4y 4.5 5y5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 100 200 300 400 0 100 200 300 400 500 600 700 0 50 100 150 200 250 300 0 50 100 150 0 50 100 150 200 250 300 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved.
4/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series typical characteristics ? output voltage - temperature ? ripple reflection - frequency ? load response characteristics (co = 1.0 f) ? output voltage startup time 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved.
5/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series block diagrams power supply input ground output voltage on/off control (high: on, low: off) no connect voltage output output voltage on/off control (high: on, low: off) ground power supply input voltage output no connect power supply input voltage output voltage output noise reducing capacitor ground terminal ground output voltage on/off control (high: on, low: off) terminal no. terminal name function power dissipation pd 1. power dissipation power dissipation calculation include estimates of power dissipation characteristics and internal ic power consumption and should be treated as guidelines. in the event that the ic is used in an environment where this power dissipation is exceeded, the attendant rise in the junction temperature will trigger the thermal shutdown circuit, reducing the current capacity and otherwise degrading the ic's design performance. allow for sufficient margins so that this power dissipation is not exceeded during ic operation. calculating the maximum internal ic power consumption (p max ) input voltage output voltage output current 2. power dissipation characteristics (pd) board: 70 mm x 70 mm x 1.6 mm material: glass epoxy pcb board: 70 mm x 70 mm x 1.6 mm material: glass epoxy pcb board: 70 mm x 70 mm x 1.6 mm material: glass epoxy pcb fig. 26: hvsof6 power dissipation/ power dissipation reduction (example) fig. 27: hvsof5 power dissipation/ power dissipation reduction (example) fig. 28: ssop5 power dissipation/ power dissipation reduction (example) 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved.
6/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series it is recommended to insert bypass capacitors between input and gnd pins, positioning them as close to the pins as possible. these capacitors will be used when the power supply impedance increases or when long wiring routes are used, so they should be checked once the ic has been mounted. ceramic capacitors generally have temperature and dc bias characteristics. when selecting ceramic capacitors, use x5r or x7r or better models that offer good temperature and dc bias characteristics and high torelant voltages. input capacitor to prevent oscillation at the output, it is recommended that the ic be operated at the stable region show in below fig. it operates at the capacitance of more than 1.0 f. as capacitance is larger, stability becomes more stable and characteristic of output load fluctuation is also improved. output capacitor examples of ceramic capacitor characteristics 0 120 100 80 60 40 20 0 1234 50v torelance 10v torelance rate of change in electrostatic capacitance (%) dc bias vdc (v) - 25 120 100 80 60 40 20 0 0 255075 y5v x7r x5r rate of change in electrostatic capacitance (%) t emperature ( c) 0 100 95 90 85 80 75 70 1234 50v torelance 10v torelance 16v torelance rate of change in electrostatic capacitance (%) dc bias vdc (v) fig. 29: capacitance - bias characteristics (y5v) fig. 30: capacitance - bias characteristics (x5r, x7r) fig. 31: capacitance?temperature characteristics (x5r, x7r, y5v) 100 10 1 0.1 0.01 0 100 200 300 esr() output current i out (ma) cout=1.0 f cin=1.0f ta = + 25c bh \\ lb1whfv/wg bh \\ ma3whfv fig. 32 bh \\ lb1whfv/wg stable operating region characteristics (example) 100 10 1 0.1 0.01 0 50 100 150 esr() output current i out (ma) cout=1.0f ta = + 25c bh \\ fb1whfv/wg fig. 33 bh \\ fb1whfv/wg stable operating region characteristics (example) 100 10 1 0.1 0.01 0 50 100 150 esr() output current i out (ma) cout=2.2f ta = + 25c stable region stable region stable region the ic incorporates a built-in over current protection circuit that operates according to the output current capacity. this cir cuit serves to protect the ic from damage when the load is shorted. the protection circuits use fold-back type current limiting and are designed to limit current flow by not latching up in the event of a large and instantaneous current flow originating from a large capacitor or other component. these protection circuits are effective in preventing damage due to sudden and unexpected accidents. however, the ic should not be used in applications characterized by the continuous operation or transitioning of the protection circuits. ? over current protection circuit this system has a built-in thermal shutdown circuit for the purpose of protecting the ic from thermal damage. as shown above, this must be used within the range of power dissipation, but if the power dissipation happens to be continuously exceeded, the chip temperature increases, causing the thermal shutdown circuit to operate. when the thermal shutdown circuit operates, the operation of the circuit is suspended. the circuit resumes operation immediately after the chip temperature decreases, so the output repeats the on and off states. there are cases in which the ic is destroyed due to thermal runaway when it is left in the overloaded state. be sure to avoid leaving the ic in the overloaded state. ? thermal shutdown circuit other precautions use caution when using the ic in the presence of a strong magnetic field as such environments may occasionally cause the chip to malfunction. ? actions in strong magnetic fields in applications where the ic may be exposed to back current flow, it is recommended to create a route t dissipate this current by inserting a bypass diode between the v in and v out pins. ? back current ensure a minimum gnd pin potential in all operating conditions. in addition, ensure that no pins other than the gnd pin carry a voltage less than or equal to the gnd pin, including during actual transient phenomena. ? gnd potential fig. 34 bh \\ ma3whfv stable operating region characteristics (example) 16v torelance 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved.
7/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series noise terminal (bh \\ ma3whfv) the terminal is directly connected to inward normal voltage source. because this has low current ability, load exceeding 100na will cause some instability at the output. for such reasons, we urge you to use ceramic capacitors which have less leak current. when choosing noise the current reduction capacitor, there is a trade-off between boot-up time and stability. a bigger capacitor value will result in lesser oscillation but longer boot-up time for vou t. fig. 35: v out startup time vs. noise-filtering capacitor capacitance characteristics (example) ~ condition ~ vin=4.0v cin=1.0f co=1.0f rout=3.0k ta=25 c bh30ma3whfv 100 10 1 0.1 0.01 100p 1000p 0.01 0.1 noise-filtering capacitor capacitance cn (f) v out startup time t (msec) regarding input pin of the ic this monolithi c ic contain s p + isolatio n and p substrat e layer s between adjacen t 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 to create a variety of parasitic elements. for example, when a resistor and transistor are connected to pins as shown in fig.37 the p/n junction functions as a parasitic diode when gnd > (pin a) for the resistor or gnd > (pin b) for the transistor (npn). similarly, when gnd > (pin b) for the transistor (npn), the parasitic diode described above combines with the n layer of other adjacent elements to operate as a parasitic npn transistor. the formation of parasitic elements as a result of the relationships of the potentials of different pins is an inevitable result of the ic's architecture. the operation of parasitic elements can cause interference with circuit operation as well as ic malfunction and damage. for these reasons, it is necessary to use caution so that the ic is not used in a way that will trigger the operation of parasitic elements, such as by the application of voltage lower than the gnd (p substrate) voltage to input pins. fig. 36: example of bypass diode connection v cc ctl out gnd back current fig.37 gnd c e b parasitic elements (terminal b) parasitic element gnd (terminal a) gnd gnd e n n n n p p + p + p b o parasitic elements (terminal b) transistor (npn) p-board gnd n n n p p p + p + (terminal a) resistor parasitic element other adjacent elements part number selection package hfv : hvsof6 hvsof5 g : ssop5 bh 3 fb1 w hf v 0 -t r rohm part number output voltage current capacity ma3 : 300ma fb1 : 150ma lb1 : 150m a shutdown switch w : with switch package specification tr : embossed taping 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved.
8/8 technical note bh ?? fb1wg series, bh ?? fb1whfv series, bh ?? lb1wg series, bh ?? lb1whfv series, bh ?? ma3whfv series 2010.07 - rev. c www.rohm.com ? 2010 rohm co., ltd. all rights reserved. 5 123 4 (0.05) 1.2 0.05 1.6 0.05 1.6 0.05 1.0 0.05 (1.28max.) 0.8 0.3 (0.91) (0.41) 321 4 5 0.2max. 0.130.05 0.6max. 0.5 0.220.05 (1.2) (1.4) (1.5) (0.45) (0.15) 0.1450.05 0.220.05 0.75max. 0.5 s 321 456 3.0 0.1 2.6 0.1 1.6 0.1 (1.8max.) (2.8max.) 0.1 s 0.1 2.90.2 0.13 4 +6 - 4 1.6 2.80.2 1.10.05 0.050.05 +0.2 -0.1 +0.05 -0.03 0.42 +0.05 -0.04 0.95 5 4 12 3 1.25max. 0.2min. (package specification) ssop5, hvsof5 package form package quantity package orientation embossed taping 3000pcs tr (when the reel is held with the left hand and the tape is drawn out with the right hand, the no. 1 pin of the product faces the upper right direction.) * please make orders in multiples of the package quantity. reel no. 1 pin pulling side (package specification) hvsof6 embossed taping 3000pcs tr (when the reel is held with the left hand and the tape is drawn out with the right hand, the no. 1 pin of the product faces the upper right direction.) * please make orders in multiples of the package quantity. hvsof5 ssop5 hvsof6 (unit:mm) (unit:mm) (unit:mm) package form package quantity package orientation
r1010 a www.rohm.com ? 2010 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 specified herein is subject to change for improvement without notice. the content specified 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 specifications, 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 specified 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 specified 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 specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified 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, fire or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, fire 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, aerospac e 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 specified 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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