technical note 3-terminal regulator ldo regulator series standard variable output ldo regulator ba00dd0w and ba00cc0w series general description the ba00dd0/cc0 series are low-saturation regulators available for outputs up to 2a/1a. the output voltage can be arbitrarily configured using the external resistance. these se ries of ldo regulators are offered in a broad packaging lineup. this ic has a built-in over-current protec tion circuit that prevents the destruction of the ic due to output short circuits and a thermal shutdown circuit that protects the ic from thermal damage due to overloading. features 1) maximum output current : 2a (ba00dd0 series), 1a(ba00cc0 series) 2) 1% high-precision output voltage (ba00dd0) 3) low saturation with pnp output 4) built-in over-current protection circui t that prevents the destruction of the ic due to output short circuits 5) built-in thermal shutdown circuit for protecting the ic from thermal damage due to overloading 6) built-in over- voltage protection circuit that prevents the destruction of the ic due to power supply surges 7) to220cp and hrp5 packaging(ba00dd0), and to220fp/cp and to252 packaging(ba00cc0) applications usable in dsp power supplies for dvds and cds, fpds, televi sions, personal computers or any other consumer device line up 1a ba00cc0 series 2a ba00dd0 series 2007.oct. part number package ba00cc0wt to220fp-5 ba00cc0wt-v5 to220fp-5(v5) BA00CC0CP-V5 to220cp-v5 ba00cc0wfp to252-5 part number package ba00dd0cp-v5 to220cp-v5 ba00dd0whfp hrp-5
2/8 absolute maximum ratings(ta=25 ) parameter symbol limits unit input power supply voltage 1 vcc -0.3 ~ +35 v 2300(hrp5) 1300(to252-5) power dissipation 2 pd 2000(to220fp/cp) mw operating temperature range topr -40 ~ +125 ambient storage temperature tstg -55 ~ +150 junction temperature tjmax +150 output control terminal voltage v ctl -0.3 ~ +vcc v voltage applied to the tip 3 vcc peak +50 v 1 must not exceed pd 2 hrp5 : in cases in which ta 25 when a 70mm 70mm 1.6mm glass epoxy board is used, the power is reduced by 18.4 mw/ . to252-5 : in cases in which ta 25 when a 70mm 70mm 1.6mm glass epoxy board is used, the power is reduced by 10.4 mw/ . to252fp-5 : no heat sink. when ta 25 , the power is reduced by 16 mw/ . 3 applied voltage : 200msec or less (tr 1msec) recommended operating range (ta=25 ) parameter symbol min. max. unit ba00cc0 4.0 25.0 input power supply voltage ba00dd0 vcc 3.0 25.0 v ba00cc0 1 output current ba00dd0 io 2 a output control terminal voltage v ctl 0 vcc v electrical characteristics(abridged) ba00cc0 series (unless specified otherwise, ta=25 , vcc=10v, v ctl =5v, io=500ma, r 1 =2.2k , r 2 =6.8k ) parameter symbol min. ty p. max. unit conditions c-terminal voltage vc 1.200 1.225 1.250 v io=50ma circuit current at the time of shutdown isd 0 10 a v ctl =0v minimum i/o voltage difference vd 0.3 0.5 v vcc= 0.95 vo output current capacity io 1.0 a input stability reg.i 20 100 mv vcc= 6v 25 v load stability reg.l 50 150 mv io=5ma 1a output voltage temperature coefficient t cvo 0.02 %/ io=5ma ,tj=0~125 design guarantee(100% shipping inspection not performed) ba00dd0 series (unless specified otherwise, ta=25 , vcc=8v, v ctl =3v, io=500ma, r 1 =15k , r 2 =44k ) parameter symbol min. ty p. max. unit conditions c-terminal voltage v adj 1.257 1.270 1.283 v io=100ma circuit current at the time of shutdown isd 0 10 a v ctl =0v minimum i/o voltage difference vd 0.45 0.7 v vcc= 0.95 vo, io=2a output current capacity io 2.0 a input stability reg.i 15 35 mv vcc= 5.7v 25 v, io=200ma load stability reg.l 50 100 mv io=0ma 2a output voltage temperature coefficient t cvo 0.02 %/ io=5ma ,tj=0~125 design guarantee(100% shipping inspection not performed) max200msec (voltage supply more than 35v) 50v 35v 0v tr R 1msec
3/8 reference data ba00cc0 (3.3v preset voltage) (unless specified otherwise, vcc=10v, v out =3.3v preset, v ctl =3v, io=0ma, r 1 =2.2k , and r 2 =6.8k ) fig.10 ctl voltage vs. output voltage fig.11 overvoltage operating fig.12 thermal shutdown circuit characteristics characteristics(io=200ma) fig.6 ripple rejection characteristics io=100ma 1000k 2.0 2.5 3.0 3.5 4.0 4.5 -40 -20 0 20 40 60 80 100 120 ambient temperature:ta[ ] output voltage:vout[v ] 0 1 2 3 4 5 6 7 8 0 2 4 6 8 1012141618202224 control voltage:vctl[v] output voltage:vout[v ] 0 1 1 2 2 3 3 4 4 0 5 10 15 20 25 30 35 40 supply voltage:vcc[v] output voltage:vout[v ] 0 1 1 2 2 3 3 4 4 130 140 150 160 170 180 190 ambient temperature:ta[ ] output voltage:vout[v ] 0 50 100 150 200 0 100 200 300 400 500 600 700 800 900 1000 output current:io[ma] circuit current:icc[ma] 0 100 200 300 400 500 600 700 800 900 1000 0 2 4 6 8 1012 1416 1820 control voltage:vctl[v] control current:ictl[a] fig.7 output voltage fig.8 circuit current by load level fig.9 ctl voltage vs. ctl current temperature characteristics (i out =0ma 1a) fig.3 input stability fig.1 circuit current fig.2 input stability io=500ma 0.0 0.5 1.0 1.5 2.0 2.5 3.0 02468101214161820 supply voltage:vcc[v] circuit current:icc[ma] 0.0 1.0 2.0 3.0 4.0 0 2 4 6 8 10 12 14 16 18 20 supply voltage:vcc[v] output voltage:vout[v ] 0.0 1.0 2.0 3.0 4.0 0 2 4 6 8 10 12 14 16 18 20 supply voltage:vcc[v] output voltage:vout[v ] fig.5 input/output voltage difference 0 100 200 300 400 500 600 0 100 200 300 400 500 600 700 800 900 1000 output current:io[ma] dropout voltage: vd[v] 0 10 20 30 40 50 60 70 80 10 1000 100000 frequency:f[hz] ripple rejection:r.r[db ] fig.4 load stability io- vd characteristics vcc=2.95v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 200 400 600 800 1000 1200 1400 1600 1800 2000 output current:io[ma] output voltage:vout[v ] 100k 10k 1k 100 [mv]
4/8 reference data ba00dd0 (5.0v preset voltage) (unless specified otherwise, vcc=8v, v out =5v preset, v ctl =3v, io=0ma, r 1 =15k , and r 2 =44k ) circuit characteristics 4.8 4.9 5.0 5.1 5.2 -40 -20 0 20 40 60 80 100 ambient temperature:ta[ ] output voltage:vout[v ] 0 1 2 3 4 5 6 7 8 0 2 4 6 8 1012141618202224 control voltage:vctl[v] output voltage:vout[v ] 0 1 1 2 2 3 3 4 4 0 5 10 15 20 25 30 35 40 supply voltage:vcc[v] output voltage:vout[v ] 0 2 4 6 8 130 140 150 160 170 180 190 ambient temperature:ta[ ] output voltage:vout[v ] 0 20 40 60 80 100 120 140 160 180 200 output current:iout[a] circuit current:[ma] 0 100 200 300 400 500 600 700 800 0 2 4 6 8 1012141618202224 control voltage:vctl[v] control current:ictl[a] fig.19 output voltage fig.20 circuit current by load level fig.21 ctl voltage vs. ctl current temperature characteristics (i out =0ma 2a) fig.15 input stability fig.13 circuit current fig.14 input stability io=2a 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 024681012141618202224 supply voltage:vcc[v] circuit current:icc[ma] 0 1 2 3 4 5 6 7 8 0 2 4 6 8 10 12 14 16 18 20 22 24 supply voltage:vcc[v] output voltage:vout[v ] 0 1 2 3 4 5 6 7 8 0 2 4 6 8 10 12 14 16 18 20 22 24 supply voltage:vcc[v] output voltage:vout[v ] 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 out put current:iout [a] output voltage:vout[v] fig.17 input/output voltage difference 0 100 200 300 400 500 600 700 800 out put current:iout [a] dropout voltage:vdrp[v] 0 5 10 15 20 25 30 35 40 45 50 55 60 10 1000 100000 frequency:f[hz] ripple rejection:r.r[db ] fig.16 load stability fig.18 ripple rejection characteristics iout=100ma iout- vd characteristics vcc=4.75v 1000k 100k 10k 1k 100 0.5 1.0 1.5 2.0 1.0 2.0 3.0 4.0 4.8 0.5 1.0 1.5 2.0 1 8 2 3 4 5 6 7 fig.22 ctl voltage vs. output voltage fig.23 overvoltage operating fig.24 thermal shutdown characteristics(io=200ma) [ v]
5/8 block diagrams [ba00cc0wfp] [ba00dd0whfp] top view to252-5 hrp5 pinno. symbol function 1 ctl output voltage on/off control 2 vcc power supply voltage input 3 n.c./gnd unconnected terminal/gnd* 4 out voltage output 5 c output voltage regulation terminal fin gnd gnd [ba00cc0wt] [ba00dd0wt] to220fp-5 to220fp-5(v5) pinno. symbol function 1 ctl output voltage on/off control 2 vcc power supply voltage input 3 gnd gnd 4 out voltage output 5 adj output voltage regulation terminal input / output equivalent circuit diagrams < ba00cc0wt/ba00cc0wfp > < ba00dd0wt/ba00dd0wfp > output voltage configuration method please connect resistors r 1 and r 2 (which determines the output voltage) as shown in fig.29. please be aware that the offset due to the current that flows from the adj termi nal becomes large when resistors with large values are used. the use of resistors with r 1 =2k to 15 k is recommended. vo = vc (v adj ) 1 ba cc0 vc : 1.225 (typ.) ba dd0 v adj : 1.270 (typ.) r 2 r 1 0.33 f vout c ( adj ) + gnd v cc ctl r1 r2 driver tsd ocp vref n.c.(to252-5) gnd(hrp5) fin 1 5 2 4 ovp 3 1 2 3 4 5 1 2 3 4 5 * to252-5 is n.c., and hrp5 is gnd 1 2 3 4 5 1 2 3 4 5 top view top view 0.33 f vout c ( adj ) + gnd v cc ctl r1 r2 driver tsd ocp vref 3 1 5 2 4 ovp ctl 25k 25k v out 10 k c 5.5 k vcc vcc 500 10k adj vcc ctl 39k 2k vcc fig.27 fig.28 fig.25 fig.26 v out c vc v adj fig.29 v out fin 31k 1 2 3 4 5 to220cp-v5
6/8 thermal design hrp-5 to225fp-5 to252-5 fig.30 fig.31 fig.32 when using at temperatures over ta=25 , please refer to the heat reducing characteristics shown in fig.30 through 32. the ic characteristics are closely related to the temperatur e at which the ic is used, so it is necessary to operate the ic at temperatures less than the maxi mum junction temperature tj max . fig.31 shows the acceptable loss and heat reducing characteri stics of the to220fp package the portion shown by the diagonal line is the acceptable loss range that can be used wi th the ic alone. even when the ambient temperature ta is a normal temperature (25 ), the chip (junction) temperature tj may be quite high so please operate t he ic at temperatures less than the acceptable loss pd. the calculation method for power consumption pc(w) is as follows : pc = (vcc-vo) io vcc icca acceptable loss pd Q pc solving this for load current io in order to operate within the acceptable loss, io Q please refer to figs.8 and 20 for icca. it is then possible to find the maximum load current io max with respect to the applied volt age vcc at the time of thermal design. calculation example example 1) when ta=85 , vcc=8.3v, vo=3.3v, ba33dd0wt io Q with the ic alone : ja=62.5 /w -16mw/ io Q 200ma (icca : 2ma) 25 =2000mw 85 =1040mw please refer to the above information and keep thermal designs within the scope of acceptable loss for all operating temperature ranges. the power consumption pc of the ic when there is a short circuit (short between vo and gnd) is : pc=vcc (icca ishort) ishort : short circuit current terminal vicinity settings and cautions ? vcc terminal please attach a capacitor (greater than 0.33 f) between the vcc and gnd . the capacitance values differ depending on the application, so please chose a capacitor with sufficient margin and verify the operation on an actual board. ? ctl terminal the ctl terminal is turned on at 2.0v and higher and off at 0.8v and lower within the operating power supply voltage range. the power supply and the ctl terminal may be started up and shut down in any order without problems. vo terminal please attach an anti-oscillation capacitor between v out and gnd. the capacitance of the capacitor may significantly change due to factors such as temperature changes, which ma y cause oscillations. please use a tantalum capacitor or aluminum electrolytic capacitor with favorable characteri stics and small external series resistance (esr) even at low temperatures. the output oscillates regardle ss of whether the esr is large or smal l. please use the ic within the stable operating region while referring to the esr characteristics refe rence data shown in figs.33 through 35. in cases where there are sudden load fluctuations, the a large capacitor is recommended. below figure , it is esr-to-io stability area characteristics ,measured by 22 ? -ceramic-capacitor and resistor connected in series. this characteristics is not equal value perfectly to 22 ? -aluminum electrolytic capacitor in order to measurement method. pd ? vcc icca vcc vo 1.04 8.3 icca 5 mounted on a rohm standard board board size : 70 70 1.6 L copper foil area :7 7 L to252-5 ja=96.2( /w) vcc vo io icca input voltage output voltage load current circuit current 0.0 0.4 0.8 1.2 1.6 2.0 0 25 50 75 100 125 150 ambie n t te mpe ratu re :ta( power dissipation:pd(w ) 0 1 2 3 4 5 6 7 8 9 10 0 25 50 75 100 125 150 ambient temperature:ta( power dissipation:pd(w ) 0 5 10 15 20 25 0 25 50 75 100 125 150 ambient temperature:ta( power dissipation:pd(w ) 7.3w 5.5w 2.3w 1 20.0 2 2.0 1.30 board size : 70 70 1.6 L 3 board contains a thermal board front copper foil area : 10.5 10.5 L 2 2-layer board (back surface copper foil area :15 15 L 2 ) 2-layer board (back surface copper foil area :70 70 L 2 ) 4-layer board (back surface copper foil area :70 70 L 2 ) 1 when using a maximum heat sick : j-c=6.25( /w) 2 when using an ic alone : j-c=62.5( /w)
7/8 note, however, that the stable range suggested in the figu re depends on the ic and the resistance load involved, and can vary with the board?s wiring impedance, input impedance, and/or load im pedance. therefore, be certain to ascertain the final status of these item s for actual use. keep capacitor capacitance within a range of 22 f 1000 f. it is also recommended that a 0.33 f bypass capacitor be connected as close to the input pin-gnd as location possible. ho wever, in situations such as rapid fluctuation of the input voltage or the load, please check the operation in real application to determine proper capacitance. fig.33:output equivalent circuit fig.34:io vs. esr characteristics fig.35: io vs. esr characteristics (ba cc0,22 f) (ba dd0,22 f) other 1) protection circuits overcurrent protection circuit a built-in overcurrent protection circuit corresponding to the current capacity prevents t he destruction of the ic when t here are load shorts. this protection circuit is a ?7?-shaped current control circuit that is designed such that the current is rest ricted and does not latch even when a large current momentarily flow s through the system with a high-capacitance capacitor. however, while this protection circuit is effective for the pr evention of destruction due to u nexpected accidents, it is not suitable for continuous operation or tr ansient use. please be aware when creating thermal designs that the overcurrent protection circuit has negative current capacity characterist ics with regard to temperature (refer to figs.4 and 16). thermal shutdown circuit (thermal protection) this system has a built-in temperature prot ection circuit for the purpose of protecti ng the ic from thermal damage. as shown above, this must be used within the range of acceptable loss, but if the acceptable loss happens to be continuously exceeded, the chip temperature tj increases, caus ing the temperature protec tion 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 tj decreases, so the output r epeats the on and off states (please refer to figs.12 and 24 for the temperatures at which the temperature protection circuit operates). there are cases in which the ic is destroyed due to thermal runawa y when it is left in the overloaded state. be sure to avoid leaving the ic in the overloaded state. reverse current in order to prevent the destruction of the ic when a re verse current flows through the ic, it is recommended that a diode be placed between the vcc and vo and a pathway be created so that the current can escape (refer to fig.36). 2) this ic is bipolar ic that has a p-board (substrate) and p+ isolation layer between each devise, as shown in fig. 37. a p-n junction is formed between this p-layer and the n-layer of each device, and the p-n junction operates as a parasitic diode when the electric potential relationship is gnd> terminal a, gnd> terminal b, while it operates as a parasitic transistor when the electric potential relations hip is terminal b gnd> terminal a. parasitic devices are intrinsic to the ic. the operation of parasitic devices induces mutual interference between circuits, causing malfunctions and eventually the destruction of the ic itself. it is necessary to be careful not to use the ic in ways that would cause parasitic elements to operate. for example, applying a voltage that is lower than the gnd (p-board) to the input terminal. fig. 37: example of the basic structure of a bipolar ic 22 f out ic c(adj) 200 400 800 1000 0.1 1 10 stable operating region 100 0 600 unstable operating region unstable operating region 1 0.1 1 10 100 10 100 1000 output current lo(ma) output current lo(ma) unstable operating region unstable operating region stable operating region effective series resistance:esr [ ] effective series resistance:esr [ ] gnd n p n p+ p+ parasitic element or transistor (pin b) b e transistor ( npn ) n p n gnd o (pin a) gnd n p+ resistor parasitic element p n p p+ n (pin a) parasitic element or transistor (pin b) g nd c b e parasitic element g nd fig. 36:bypass diode out vcc ctl gnd reverse current
8/8 part number selection *please make orders in multiples of the package quantity. *please make orders in multiples of the package quantity. *please make orders in multiples of the package quantity. *please make orders in multiples of the package quantity. package form container tube package quantity 500pcs package orientation the product orientation in each container tube is constant. package form container tube package quantity 500pcs package orientation the product orientation in each container tube is constant. rohm model name output voltage current capacity cc0 : 1a dd0 : 1a shutdown switch w : with switch none : without switch t : f p : hfp : cp: b 0 0 c c w h 0 a p e 2 f package specification tr : embossed taping(hrp5) e2 : embossed taping(to252-5, to220cp) none : tube container v5 :foaming(v5 only) package to220-3,5 to252-3,5 hrp5 to220cp unit:mm hrp5 package specification to220fp-5 package specification to220fp-5 v5 to252-3,5 embossed taping e2 when the reek 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 lower left direction. tape quantity direction of feed 2000 p cs no.1 pin reel direction of feed tape and reel information hrp5 tape quantity direction of feed embossed taping 2000 p cs tr when the reek 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. no.1 pin reel direction of feed to2220cp-v5 unit:mm
notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. appendix1-rev2.0 thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact your nearest sales office. rohm customer support system the americas / eupope / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2007 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. it is our top priority to supply products with the utmost quality and reliability. however, there is always a chance of failure due to unexpected factors. therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. rohm cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the notes specified in this catalog. 21, saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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