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?2000 fairchild semiconductor international www.fairchildsemi.com rev. 5.0 features ? maximum output current of 100ma ? output voltage of 5v, 6v, 8v, 9v,10v, 12v, 15v, 18v and 24v ? thermal overload protection ? short circuit current limiting ? output voltage offered in 5% tolerance description the mc78lxxa/lm78lxxa series of fixed voltage monolithic integrated circuit voltage regulators are suitable for application that required supply current up to 100ma. to-92 1: output 2: gnd 3: input 8-sop 1: output 2: gnd 3: gnd 4: nc 5: nc 6: gnd 7: gnd 8: input 1 1 internal block diagram v i 3 2 gnd v 0 1 i r sc reference voltage short circuit protection thermal shutdown circuit + - inpu t outpu t mc78lxxa/lm78lxxa 3-terminal 0.1a positive voltage regulator
mc78lxxa/lm78lxxa 2 absolute maximum ratings electrical characteristics(mc78l05a/lm78l05a) (v i = 10v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol value unit input voltage (for v o = 5v, 8v) (for v o = 12v to 18v) (for v o = 24v v i 30 35 40 v v v operating junction temperature range t j 0 ~ +150 c storage temperature range t stg -65 ~ +150 c parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c4.85.05.2v line regulation ? v o t j = 25 c 7v v i 20v - 8 150 mv 8v v i 20v - 6 100 mv load regulation ? v o t j = 25 c 1ma i o 100ma - 11 60 mv 1ma i o 40ma - 5.0 30 mv output voltage v o 7v v i 2 0v 1ma i o 40ma - - 5.25 v 7v v i v max (note 2) 1ma i o 70ma 4.75 - 5.25 v quiescent current i q t j = 25 c-2.05.5ma quiescent current change with line ? i q 8v v i 20v - - 1.5 ma with load ? i q 1ma i o 40 ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 40 - v temperature coefficient of v o ? v o / ? ti o = 5ma - -0.65 - mv/ c ripple rejection rr f = 120hz, 8v v i 18v, t j = 25 c41 80 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 3 electrical characteristics(mc78l08a) (v i = 14v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c7.78.08.3v line regulation ? v o t j = 25 c 10.5v v i 23v - 10 175 mv 11v v i 23v - 8 125 mv load regulation ? v o t j = 25 c1ma i o 100ma - 15 80 mv 1ma i o 40ma - 8.0 40 mv output voltage v o 10.5v v i 23v 1ma i o 40ma 7.6 - 8.4 v 10.5v v i v max (note 2) 1ma i o 70ma 7.6 - 8.4 v quiescent current i q t j = 25 c-2.05.5ma quiescent current change with line ? i q 11v v i 23v - - 1.5 ma with load ? i q 1ma i o 40ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 60 - v temperature coefficient of v o ? v o / ? ti o = 5ma - -0.8 - mv/ c ripple rejection rr f = 120hz, 11v v i 21v, t j = 25 c39 70 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 4 electrical characteristics(mc78l12a/lm78l12a) (v i = 19v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c 11.5 12 12.5 v line regulation ? v o t j = 25 c 14.5v v i 27v - 20 250 mv 16v v i 27v - 15 200 mv load regulation ? v o t j = 25 c1ma i o 100ma - 20 100 mv 1ma i o 40ma - 10 50 mv output voltage v o 14.5v v i 27v 1ma i o 40ma 11.4 - 12.6 v 14.5v v i v max (note 2) 1ma i o 70ma 11.4 - 12.6 v quiescent current i q t j = 25 c-2.16.0ma quiescent current change with line ? i q 16v v i 27v - - 1.5 ma with load ? i q 1ma i o 40ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 80 - v temperature coefficient of v o ? v o / ? t io = 5ma - -1.0 - mv/ c ripple rejection rr f = 120hz, 15v v i 25v, t j = 25 c37 65 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 5 electrical characteristics(mc78l15a) (v i = 23v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c 14.4 15 15.6 v line regulation ? v o t j = 25 c 17.5v v i 30v - 25 300 mv 20v v i 30v - 20 250 mv load regulation ? v o t j = 25 c 1ma i o 100ma - 25 150 mv 1ma i o 40ma - 12 75 mv output voltage v o 17.5v v i 30v 1ma i o 40ma 14.25 - 15.75 v 17.5v v i v max (note 2) 1ma i o 70ma 14.25 - 15.75 v quiescent current i q t j = 25 c-2.16.0ma quiescent current change with line ? i q 20v v i 30v - - 1.5 ma with load ? i q 1ma i o 40ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 90 - v temperature coefficient of v o ? v o / ? ti o = 5ma - -1.3 - mv/ c ripple rejection rr f = 120hz, 18.5v v i 28.5v, t j = 25 c34 60 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 6 electrical characteristics(mc78l18a) (v i = 27v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c 17.3 18 18.7 v line regulation ? v o t j = 25 c 21v v i 33v - 145 300 mv 22v v i 33v - 135 250 mv load regulation ? v o t j = 25 c 1ma i o 100ma - 30 170 mv 1ma i o 40ma - 15 85 mv output voltage v o 21v v i 33v 1ma i o 40ma 17.1 - 18.9 v 21v v i v max (note 2) 1ma i o 70ma 17.1 - 18.9 v quiescent current i q t j = 25 c-2.26.0ma quiescent current change with line ? i q 21v v i 33v - - 1.5 ma with load ? i q 1ma i o 40ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 150 - v temperature coefficient of v o ? v o / ? ti o = 5ma - -1.8 - mv/ c ripple rejection rr f = 120hz, 23v v i 33v, t j = 25 c34 48 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 7 electrical characteristics(MC78L24A) (v i = 33v, i o = 40ma, 0 c t j 125 c, c i = 0.33 f, c o = 0.1 f, unless otherwise specified. (note 1) notes: 1. the maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. the data above represent pulse test conditions with junction temperature as indicated at the initiation of test s. 2. power dissipation 0.75w. parameter symbol conditions min. typ. max. unit output voltage v o t j = 25 c 232425 v line regulation ? v o t j = 25 c 27v v i 38v - 160 300 mv 28v v i 38v - 150 250 mv load regulation ? v o t j = 25 c 1ma i o 100ma - 40 200 mv 1ma i o 40ma - 20 100 mv output voltage v o 27v v i 38v 1ma i o 40ma 22.8 - 25.2 v 27v v i v max (note 2) 1ma i o 70ma 22.8 - 25.2 v quiescent current i q t j = 25 c-2.26.0ma quiescent current change with line ? i q 28v v i 38v - - 1.5 ma with load ? i q 1ma i o 40ma - - 0.1 ma output noise voltage v n t a = 25 c, 10hz f 100khz - 200 - v temperature coefficient of v o ? v o / ? ti o = 5ma - -2.0 - mv/ c ripple rejection rr f = 120hz, 28v v i 38v, t j = 25 c34 45 - db dropout voltage v d t j = 25 c-1.7-v
mc78lxxa/lm78lxxa 8 typical application ?( )? : 8sop type notes: 1. to specify an output voltage, substitute voltage value for ?xx?. 2. bypass capacitors are recommend for optimum stability and transient response and should be located as close as possible to the regulator ka78lxxa note 1 input output 1(1) 2(2,3,6,7) 3(8) c1 0.33 f note 2 0. 1 note 2 f mc78lxxa/lm78lxxa
mc78lxxa/lm78lxxa 9 mechanical dimensions package 0.46 0.10 1.27typ (r2.29) 3.86max [1.27 0.20 ] 1.27typ [1.27 0.20 ] 3.60 0.20 14.47 0.40 1.02 0.10 (0.25) 4.58 0.20 4.58 +0.25 ?.15 0.38 +0.10 ?.05 0.38 +0.10 ?.05 to-92
mc78lxxa/lm78lxxa 10 mechanical dimensions (continued) package 4.92 0.20 0.194 0.008 0.41 0.10 0.016 0.004 1.27 0.050 5.72 0.225 1.55 0.20 0.061 0.008 0.1~0.25 0.004~0.001 6.00 0.30 0.236 0.012 3.95 0.20 0.156 0.008 0.50 0.20 0.020 0.008 5.13 0.202 max #1 #4 #5 0~8 #8 0.56 0.022 () 1.80 0.071 max0.10 max0.004 max min + 0.10 -0.05 0.15 + 0.004 -0.002 0.006 8-sop
mc78lxxa/lm78lxxa 11 ordering information product number package operating temperature lm78l05acz to-92 0 ~ + 125 c lm78l12acz product number package operating temperature mc78l05acp to-92 0 ~ + 125 c mc78l08acp mc78l12acp mc78l15acp mc78l18acp MC78L24Acp mc78l05acd 8 sop
mc78lxxa/lm78lxxa 7/12/00 0.0m 001 stock#dsxxxxxxxx ? 2000 fairchild semiconductor international life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor international. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com

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