ba178m { { t / fp series regulator ics standard 78m series, 3-pin regulator ba178m { { { { { { { { t / fp series the ba178m { { t and ba178m { { fp series are 3-pin, fixed positive output voltage regulators. these regulators are used to provide a stabilized output voltage from a fluctuating dc input voltage. there are 11 fixed output voltages, as follows : 5v, 6v, 7v, 8v, 9v, 10v, 12v, 15v, 18v, 20v, and 24v. the maximum current capacity is 0.5a for each of the above voltages. z z z z applications constant voltage power supply z z z z features 1) built-in overcurrent protection circuit and thermal shutdown circuit. 2) excellent ripple regulation. 3) available in to-220fp and to252-3 packages, to meet wide range of applications. 4) compatible with other manufacturers' regulators. 5) richly diverse lineup. (5v, 6v, 7v, 8v, 9v, 10v, 12v, 15v, 18v, 20v, 24 v) z z z z product codes output voltage (v) product no. output voltage (v) product no. 512 615 718 820 924 10 ?? ba178m05t / fp ba178m09t / fp ba178m10t / fp ba178m12t / fp ba178m15t / fp ba178m18t / fp ba178m20t / fp ba178m24t / fp ba178m06t / fp ba178m07t / fp ba178m08t / fp
ba178m { { t / fp series regulator ics z z z z internal circuit configuration diagram r 4 r 2 r 16 r 15 c 1 r 10 r 8 r 9 r 11 r 12 r 20 r 19 r 21 r 17 r 13 d 2 r 5 r 6 r 1 r 7 r 22 r 10 r 3 r 14 d 3 d 1 q 3 q 11 q 4 q 2 q 7 q 5 q 13 q 12 q 10 q 6 q 8 q 9 q 15 q 16 q 17 q 1 q 14 q 18 (2) common (3) output (1) input z z z z absolute maximum ratings (ta=25 c) ^ common specifications for ba178m { { t / fp series p parameter symbol limits unit applied voltage v in 35 v power dissipation w operating temperature topr c storage temperature tstg c 2.0 ? 1.0 ? ? 40 ~ + 85 ? 55 ~ + 150 pd to220fp to252 ? 3 ? reduced by 16 mw (to220fp) and 8 mw (to252-3) for each increase in ta of 1 c over 25 c (without heat sink). z z z z recommended operating conditions (ta=25 c) ba178m05t / fp parameter symbol min. typ. max. unit input voltage 7.5 ? ? v ? 0.5 a output current 20 v in i o ba178m07t / fp parameter symbol min. typ. max. unit 9.5 ? 22 v ?? 0.5 a v in i o input voltage output current ba178m09t / fp parameter symbol min. typ. max. unit 11.5 ? v ?? 0.5 a 24 v in i o input voltage output current ba178m06t / fp parameter symbol min. typ. max. unit 8.5 ? 21 v ?? 0.5 a v in i o input voltage output current ba178m08t / fp parameter symbol min. typ. max. unit 10.5 ? 23 v ?? 0.5 a v in i o input voltage output current ba178m10t / fp parameter symbol min. typ. max. unit 12.5 ? 25 v ?? 0.5 a v in i o input voltage output current
ba178m { { t / fp series regulator ics ba178m12t / fp parameter symbol min. typ. max. unit 15 ? 27 v ?? 0.5 a v in i o input voltage output current ba178m18t / fp parameter symbol min. typ. max. unit 21 ? 33 v ?? 0.5 a v in i o input voltage output current ba178m24t / fp ba178m15t / fp parameter symbol min. typ. max. unit 17.5 ? 30 v ?? 0.5 a v in i o input voltage output current ba178m20t / fp parameter symbol min. typ. max. unit 23 ? 33 v ?? 0.5 a v in i o input voltage output current parameter symbol min. typ. max. unit v in 27 ? 33 v i o ?? 0.5 a input voltage output current z z z z electrical characteristics (unless otherwise noted, ta=25 c, v in =10v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit output voltage 1 v o1 4.8 5.0 5.2 v i o = 350ma fig.1 output voltage 2 v o2 4.75 ? 5.25 v fig.1 input stability 1 reg.i 1 ? 3 100 mv fig.1 input stability 2 reg.i 2 ? 1 50 mv fig.1 ripple rejection ratio r.r. 62 78 ? db fig.2 load regulation 1 reg.l 1 ? 20 100 mv i o = 5 ~ 500ma fig.1 load regulation 2 reg.l 2 ? 10 50 mv i o = 5 ~ 200ma fig.1 temperature coefficient of output voltage t cvo ?? 1.0 ? fig.1 output noise voltage v n ? 40 ? vf = 10hz ~ 100khz fig.3 minimum i/o voltage differential v d ? 2.0 ? vi o = 500ma fig.4 bias current i b ? 4.5 6.0 ma i o = 0ma fig.5 bias current change 1 i b1 ?? 0.5 ma i o = 5 ~ 350ma fig.5 bias current change 2 i b2 ?? 0.8 ma fig.5 peak output current i o ? p ? 875 ? ma t j = 25 c fig.1 output short-circuit current i os ? 0.4 ? av in = 25v fig.6 v in = 7.5 ~ 20v, i o = 5 ~ 350ma v in = 7 ~ 25v, i o = 200ma v in = 8 ~ 12v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 8 ~ 25v, i o = 200ma mv/ c
ba178m { { t / fp series regulator ics (unless otherwise noted, ta=25 c, v in =11v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 5.75 6.0 6.25 v i o = 350ma v o2 5.7 ? 6.3 v reg.i 1 ? 3 100 mv reg.i 2 ? 150mv r.r. 60 74 ? db reg.l 1 ? 20 120 mv i o = 5 ~ 500ma reg.l 2 ? 10 60 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 60 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.4 ? av in = 25v v in = 8.5 ~ 21v, i o = 5 ~ 350ma v in = 8 ~ 25v, i o = 200ma v in = 9 ~ 25v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 9 ~ 25v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6 (unless otherwise noted, ta=25 c, v in =13v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 6.7 7.0 7.3 v i o = 350ma v o2 6.65 ? 7.35 v reg.i 1 ? 4 100 mv reg.i 2 ? 150mv r.r. 57 71 ? db reg.l 1 ? 20 140 mv i o = 5 ~ 500ma reg.l 2 ? 10 70 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 70 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.4 ? av in = 25v v in = 9.5 ~ 22v, i o = 5 ~ 350ma v in = 9 ~ 25v, i o = 200ma v in = 10 ~ 25v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 10 ~ 25v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6
ba178m { { t / fp series regulator ics (unless otherwise noted, ta=25 c, v in =14v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 7.7 8.0 8.3 v i o = 350ma v o2 7.6 ? 8.4 v reg.i 1 ? 4 100 mv reg.i 2 ? 150mv r.r. 56 69 ? db reg.l 1 ? 20 160 mv i o = 5 ~ 500ma reg.l 2 ? 10 80 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 80 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.4 ? av in = 25v v in = 10.5 ~ 23v, i o = 5 ~ 350ma v in = 10.5 ~ 25v, i o = 200ma v in = 11 ~ 12v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 10.5 ~ 25v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6 (unless otherwise noted, ta=25 c, v in =15v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 8.6 9.0 9.4 v i o = 350ma v o2 8.55 ? 9.45 v reg.i 1 ? 4 100 mv reg.i 2 ? 250mv r.r. 56 67 ? db reg.l 1 ? 20 180 mv i o = 5 ~ 500ma reg.l 2 ? 10 90 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 90 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 11.5 ~ 24v, i o = 5 ~ 350ma v in = 11.5 ~ 26v, i o = 200ma v in = 12 ~ 25v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 12 ~ 25v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6
ba178m { { t / fp series regulator ics (unless otherwise noted, ta=25 c, v in =16v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 9.6 10.0 10.4 v i o = 350ma v o2 9.5 ? 10.5 v reg.i 1 ? 5 100 mv reg.i 2 ? 250mv r.r. 56 66 ? db reg.l 1 ? 20 200 mv i o = 5 ~ 500ma reg.l 2 ? 10 100 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 100 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 12.5 ~ 25v, i o = 5 ~ 350ma v in = 12.5 ~ 28v, i o = 200ma v in = 14 ~ 26v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 13 ~ 25v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6 (unless otherwise noted, ta=25 c, v in =19v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 11.5 12.0 12.5 v i o = 350ma v o2 11.4 ? 12.6 v reg.i 1 ? 5 100 mv reg.i 2 ? 350mv r.r. 55 63 ? db reg.l 1 ? 20 240 mv i o = 5 ~ 500ma reg.l 2 ? 10 120 mv i o = 5 ~ 200ma t cvo ?? 0.5 ? v n ? 110 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 15 ~ 27v, i o = 5 ~ 350ma v in = 14.5 ~ 30v, i o = 200ma v in = 16 ~ 30v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 14.5 ~ 30v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6
ba178m { { t / fp series regulator ics (unless otherwise noted, ta=25 c, v in =23v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 14.4 15.0 15.6 v i o = 350ma v o2 14.25 ? 15.75 v reg.i 1 ? 6 100 mv reg.i 2 ? 350mv r.r. 54 60 ? db reg.l 1 ? 20 300 mv i o = 5 ~ 500ma reg.l 2 ? 10 150 mv i o = 5 ~ 200ma t cvo ?? 0.6 ? v n ? 130 ? v f = 10hz ~ 100khz v d ? 2.0 ? v i o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? a v in = 30v v in = 17.5 ~ 30v, i o = 5 ~ 350ma v in = 17.5 ~ 30v, i o = 200ma v in = 20 ~ 30v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 17.5 ~ 30v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6 (unless otherwise noted, ta=25 c, v in =27v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 17.3 18.0 18.7 v i o = 350ma v o2 17.1 ? 18.9 v reg.i 1 ? 7 100 mv reg.i 2 ? 350mv r.r. 53 58 ? db reg.l 1 ? 20 360 mv i o = 5 ~ 500ma reg.l 2 ? 10 180 mv i o = 5 ~ 200ma t cvo ?? 0.6 ? v n ? 140 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 21 ~ 33v, i o = 5 ~ 350ma v in = 21 ~ 33v, i o = 200ma v in = 24 ~ 33v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 21 ~ 33v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6
ba178m { { t / fp series regulator ics (unless otherwise noted, ta=25 c, v in =29v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 19.2 20.0 20.8 v i o = 350ma v o2 19.0 ? 21.0 v reg.i 1 ? 8 100 mv reg.i 2 ? 450mv r.r. 53 58 ? db reg.l 1 ? 20 400 mv i o = 5 ~ 500ma reg.l 2 ? 10 200 mv i o = 5 ~ 200ma t cvo ?? 0.7 ? v n ? 150 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.5 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 23 ~ 33v, i o = 5 ~ 350ma v in = 23 ~ 33v, i o = 200ma v in = 24 ~ 33v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 23 ~ 33v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage mninimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6 (unless otherwise noted, ta=25 c, v in =33v, i o =350ma) parameter symbol min. typ. max. unit conditions measurement circuit v o1 23.0 24.0 25.0 v i o = 350ma v o2 22.8 ? 25.2 v reg.i 1 ? 10 100 mv reg.i 2 ? 550mv r.r. 50 55 ? db reg.l 1 ? 20 480 mv i o = 5 ~ 500ma reg.l 2 ? 10 240 mv i o = 5 ~ 200ma t cvo ?? 0.7 ? v n ? 170 ? vf = 10hz ~ 100khz v d ? 2.0 ? vi o = 500ma i b ? 4.8 6.0 ma i o = 0ma i b1 ?? 0.5 ma i o = 5 ~ 350ma i b2 ?? 0.8 ma i o ? p ? 875 ? ma t j = 25 c i os ? 0.17 ? av in = 30v v in = 27 ~ 33v, i o = 5 ~ 350ma v in = 27 ~ 33v, i o = 200ma v in = 28 ~ 33v, i o = 200ma e in = 1vrms, f = 120hz, i o = 100ma i o = 5ma, t j = 0 ~ 125 c v in = 27 ~ 33v, i o = 200ma mv/ c output voltage 1 output voltage 2 input stability 1 input stability 2 ripple rejection ratio load regulation 1 load regulation 2 temperature coefficient of output voltage output noise voltage minimum i/o voltage differential bias current bias current change 1 bias current change 2 peak output current output short-circuit current fig.1 fig.1 fig.1 fig.1 fig.2 fig.1 fig.1 fig.1 fig.3 fig.4 fig.5 fig.5 fig.5 fig.1 fig.6
ba178m { { t / fp series regulator ics z z z z measurement circuits v output input common 0.1 f 0.33 f 100 f v in v i o e out 10 ? 5w e in =1vrms f=120hz ripple rejection ratior.r.=20 log e in e out () fig. 2 measurement circuit for ripple rejection ratio fig. 3 measurement circuit for output noise voltage output input common 0.1 0.33 f i o v in noise meter bpf 10hz ~ 100khz 10 f + f fig. 4 measuremen t circuit for minimum i/o voltage differential v output input common 0.1 f 0.33 f i o v in v 500ma ? v = 100mv fig. 5 measurement circuit for bias current and bias current change i o v 0.1 f 0.33 f v in a output input common fig. 6 measuremen t circuit for fig. 10 output short-circuit current a output input common 0.1 f 0.33 f i o v in v output input common 0.1 f 0.33 f i o v in fig. 1 measurement circuit for output voltage, input stability, load regulation, temperature coefficient of output voltage z z z z electrical characteristic curves output voltage : v out (v) output current : i out (a) v in =10v ba178m05t 10 8 6 4 2 0 0.2 0.4 0.6 0.8 1.0 fig. 7 current limit characteristics output voltage : v out (v) junction temperature : tj ( c) 6 5 4 3 2 1 0 25 50 75 100 125 150 175 200 ba178m05t v in =10v, i out =0 fig. 8 thermal cutoff circuit characteristics 25 20 15 10 5 0 25 50 75 100 125 150 power dissipation : pd (w) (3) 6.5 (4) 2.0 ambient temperature : ta ( c) (1) 22.0 (2) 11.0 fig.9 thermal derating characteristic (to220fp) (1) infinite heat sink, j ? c = 5.7 ( c / w) (2) 100 100 2 (mm 3 ), with al heat sink (3) 50 50 2 (mm 3 ), with al heat sink (4) no heat sink j ? a = 62.5 ( c / w)
ba178m { { t / fp series regulator ics 0 25 50 75 100 125 150 2.5 5 7.5 10 12.5 0 ambient temperature : ta ( c) power dissipation : pd (w) (1) 10.0 (2) 1.0 fig.10 thermal derating characteristic (to252 ? 3) (1) infinite heat sink, j ? c = 12.5 ( c / w) (2) no heat sink j ? c=125.0 ( c /w) z z z z operation notes (1) although the circuit examples included in this handbook are highly recommendable for general use, you should thoroughly familiar yourself with the circuit characteristics as they relate to your own conditions. if you intend to change the number of external circuits, leave an ample margin, taking into account discrepancies in both static and dynamic characteristics of external parts and rohm ics. in addition, please be advised that rohm cannot provide complete assurance regarding patent rights. (2) operating power supply voltage when operating within the normal voltage range and within the ambient operating temperature range, most circuit functions are guaranteed. the rated values cannot be guaranteed for the electrical characteristics, but there are no sudden changes of the characteristics within these ranges. (3) power dissipation heat attenuation characteristics are noted on a separate page and can be used as a guide in judging power dissipation. if these ics are used in such in a way that the allowable power dissipation level is exceeded, an increase in the chip temperature could cause a reduction in the current capability or could otherwise adversely affect the performance of the ic. make sure a sufficient margin is allowed so that the allowable power dissipation value is not exceeded. (4) preventing oscillation in output and using bypass capacitors always use a capacitor between the output pins and the gnd to prevent fluctuation in the output and to prevent oscillation between the output pins and the gnd of the application?s input (v in f should be used.) changes in the temperature and other factors can cause the value of the capacitor to change, and this can cause oscillation. to prevent this, we recommend using a tantalum capacitor which has minimal changes in nominal capacitance. also, we recommend adding a bypass capacitor of about 0.33 f between the input pin and the gnd, as close to the pin as possible. (5) thermal overload circuit a built-in thermal overload circuit prevents damage from overheating. when the thermal circuit is activated, the various outputs are in the off state. when the temperature drops back to a constant level, the circuit is restored. (6) internal circuits could be damaged if there are modes in which the electric potential of the application?s input (v in ) and gnd are the opposite of the electric potential of the various outputs. use of a diode or other such bypass path is recommended. (7) although the manufacture of this product includes rigorous quality assurance procedures, the product may be damaged if absolute maximum ratings for voltage or operating temperature are exceeded. if damage has occurred, special modes (such as short circuit mode or open circuit mode) cannot be specified. if it is possible that such special modes may be needed, please consider using a fuse or some other mechanical safety measure. (8) when used within a strong magnetic field, be aware that there is a slight possibility of malfunction.
ba178m { { t / fp series regulator ics z z z z external dimensions (units : mm) 2.54 0.5 2.54 0.5 2.6 0.5 1.3 0.8 1.8 0.2 8.0 0.2 5.0 0.2 12.0 0.2 13.5min. ba178moofp series to252 ? 3 to220fp (1) input (2) common (3) output BA178MOOT series 3.1 0.1 (1) (3) (1) input (2) common (3) output 10.0 + 0.3 ? 0.1 7.0 + 0.3 ? 0.1 4.5 + 0.3 ? 0.1 2.8 + 0.2 ? 0.1 0.55 + 0.1 ? 0.05 17.0 + 0.4 ? 0.2 7.0 0.3 6.5 0.2 2 13 0.8 0.65 0.65 2.3 0.2 2.3 0.2 0.5 0.1 1.5 2.5 9.5 0.5 2.3 0.2 0.5 0.1 5.0 ? 0.1 + 0.2 5.5 0.2 (1) (2) (3) (1) (2) (3)
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