rev. a/dx 2007 - 06 - 04 LM7833/lm7847 1a positive voltage regulator taitron components incorporated www.taitroncomponents.com page 1 of 6 tel: (800) - taitron (800) - 824 - 8766 (661) - 257 - 6060 fax: (800)-taitfax (800)-824-8329 (661)-257-6415 1a positive voltage regulator general description ? the tci lm 7 8xx family is monolithic fixed voltage regulator integrated circuit. they are suitable for applications that required supply current up to 1a. ? the lm78m is available in d-pack (to-252) and to-220 packages. . features applications ? output current up to 1a ? fixed output voltage of 3.3v and 4.7v available ? thermal overload shutdown protection ? short circuit current limiting ? output transistor soa protection ? rohs compliance ordering information d-pack ( to-252 ) ? high efficiency linear regulator ? post regulation for switching supply ? microprocessor power supply ? mother board to-220
1a positive voltage regulator rev. a/dx 2007 - 06 - 04 LM7833/lm7847 www.taitroncomponents.com page 2 of 6 pin configuration block diagram outline: d d-pack ( to-252 ) outline: t to-220
1a positive voltage regulator rev. a/dx 2007 - 06 - 04 LM7833/lm7847 www.taitroncomponents.com page 3 of 6 absolute maximum ratings symbol description ratings unit v out =3.3~18v 35 v in input voltage v out =20~24v 40 v i out output current 1 a d-pack (to-252) p d power dissipation to-220 internally limited mw t j junction temperature 150 t opr operating temperature range -20 ~ 150 c t stg storage temperature range -55 ~ 150 c note: 1. absolute maximum ratings are stress ratings only and functional device operation is not implied. the device could be damaged beyond absolute maximum ratings. 2. the maximum steady state usable output current are dependent on input voltage, heat sinking, lead length of the package and copper pattern of pcb. the data are showed as electrical characteristics table represents pulse test conditions with junction temperatures specified at the initiation of test. electrical characteristics (t j =25 c, p d Q 15w, unless otherwise specified) for LM7833 (v in =5.8v, i out =0.5a, c1=0.33f, c o =0.1f) LM7833 symbol description min. typ. max. unit test conditions 3.168 3.30 3.432 v i out =5ma-1.0a v out output voltage 3.135 - 3.465 v 5.8v v in 18.3v, i out =5ma-1.0a - - 33 mv i out =5ma-1.0a ? v out load regulation - - 17 mv i out =0.25a-0.75a - - 33 mv 5.8v v in 18.3v ? v out line regulation - - 33 mv 5.8v v in 18.3v, i out =1.0a i q quiescent current - - 8.0 ma i out Q 1.0a - - 1.0 ma 5.8v v in 18.3v ? i q quiescent current change - - 0.5 ma i out =5ma-1.0a en output noise voltage - 55 - v 10hz f 100khz ? v o / ? t temperature coefficient of v out - -0.4 - mv/ i out =5ma rr ripple rejection - 57 - db 6.3v v in 16.3v, f=120hz i peak peak output current - 1.8 - a - i sc short-circuit current - 250 - ma v in =35v v d dropout voltage - 2.0 - v -
1a positive voltage regulator rev. a/dx 2007 - 06 - 04 LM7833/lm7847 www.taitroncomponents.com page 4 of 6 for lm7847 (v in =9.7v, i out =0.5a, c1=0.33f, c o =0.1f) lm7847 symbol description min. typ. max. unit test conditions 4.512 4.70 4.888 v i out =5ma-1.0a v out output voltage 4.465 - 4.935 v 7.2v v in 19.7v, i out =5ma-1.0a - - 47 mv i out =5ma-1.0a ? v out load regulation - - 24 mv i out =0.25a-0.75a - - 47 mv 7.2v v in 19.7v ? v out line regulation - - 47 mv 7.2v v in 19.7v, i out =1.0a i q quiescent current - - 8.0 ma i out Q 1.0a - - 1.0 ma 7.2v v in 19.7v ? i q quiescent current change - - 0.5 ma i out =5ma-1.0a en output noise voltage - 40 - v 10hz f 100khz ? v o / ? t temperature coefficient of v out - -0.6 - mv/ i out =5ma rr ripple rejection 62 80 - db 7.7v v in 17.7v, f=120hz i peak peak output current - 1.8 - a - i sc short-circuit current - 250 - ma v in =35v v d dropout voltage - 2.0 - v - typical application
1a positive voltage regulator rev. a/dx 2007 - 06 - 04 LM7833/lm7847 www.taitroncomponents.com page 5 of 6 dimensions in mm (inches) d-pack (to-252) to-220
1a positive voltage regulator rev. a/dx 2007 - 06 - 04 LM7833/lm7847 www.taitroncomponents.com page 6 of 6 how to contact us: us headquarters 28040 west harrison parkaway, valencia, ca 91355-4162 tel: (800) taitron (800) 824-8766 (661) 257-6060 fax: (800) taitfax (800) 824-8329 (661) 257-6415 email: taitron@taitroncomponents.com http:// www.taitroncomponents.com taitron components mexico, s.a .de c.v. boulevard central 5000 interior 5 parque industrial atitalaquia, hidalgo c.p. 42970 mexico tel: +52-55-5560-1519 fax: +52-55-5560-2190 taitron componets incorporated e representa??es do brasil ltda rua domingos de morais, 2777, 2.andar, sala 24 sade - s?o paulo-sp 04035-001 brazil tel: +55-11-5574-7949 fax: +55-11-5572-0052 taitron componets incorporated, shanghai representative office cross region plaza, 899 lingling road, suite 18c, shanghai, 200030, china tel: +86-21-5424-9942 fax: +86-21-5424-9931
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