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?2001 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.0 features ? no external components required ? output current in excess of 0.5a ? internal thermal overload ? internal short circuit current limiting ? output transistor safe area compensation ? output voltages of -5v,-6v,-8v, -12v,-15v,-18v,-24v description the ka79mxx series of 3-terminal medium current negative voltage regulators are monolithic integrated circuits designed as fixed voltage regulators. these regulators employ internal current limiting, thermal shutdown and safe area compensation making them essentially indestructible. to-220 d-pak 1. gnd 2. input 3. output 1 1 schematic diagram ka79mxx 3-terminal 0.5a negative voltage regulator
ka79mxx 2 absolute maximum ratings electrical characteristics (ka79m05/ka79m05r) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i =-10v,unless otherwise specified, c i =0.33 f, c o =0.1 f) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol value unit input voltage(for v o = -5v to -18v) (for v o = -24v) v i v i -35 -40 v v thermal resistance junction-cases r jc 5 c /w thermal resistance junction-air r ja 65 c /w operating temperature range t opr 0 ~ +125 c storage temperature range t stg -65 ~ +125 c parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c -4.8 -5 -5.2 v i o = 5ma to 350ma v i = -v7 to -25v -4.75 -5 -5.25 line regulation (note1) ? v o t j =+25 c v i = -7v to -25v - 7.0 50 mv v i = -8v to -25v - 2.0 30 load regulation (note1) ? v o i o = 5ma to 500ma t j = +25 c - 30 100 mv quiescent current i q t j = +25 c-3.06.0ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma i o = 200ma v i = -8v to -25v --0.4 output voltage drift ? vo/ ? ti o = 5ma - -0.2 - mv/ c output noise voltage v n f = 10hz, 100khz t a = +25 c -40- v ripple rejection rr f = 120hz v j = -8vto -18v 54 60 - db dropout voltage v d t j =+25 c, i o = 500ma - 1.1 - v short circuit current i sc t j = +25 c, v i = -35v - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 3 electrical characteristics (ka79m06) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -11v,unless otherwise specified) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c - 5.75 - 6.0 - 6.25 v i o = 5ma to 350ma v i = -8.0v to -25v - 5.7 - 6.0 - 6.3 line regulation (note1) ? v o t j =+25 c v i = -8vto -25v - 7.0 60 mv v i = -9v to -19v - 2.0 40 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 120 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -8v to -25v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - 0.4 - mv/ c output noise voltage v n f = 10hz to 100khz,t a = +25 c-50- v ripple rejection rr f = 120hz,v i = -9v to -19v 54 60 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 4 electrical characteristics (ka79m08/ka79m08r) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -14v,unless otherwise specified) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c - 7.7 - 8.0 - 8.3 v i o = 5ma to 350ma v i = -10.5v to -25v - 7.6 - 8.0 - 8.4 line regulation (note1) ? v o t j =+25 c v i = -10.5v to -25v - 7.0 80 mv v i = -11v to -21v - 2.0 50 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 160 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -8v to -25v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - -0.6 - mv/ c output noise voltage v n f = 10hz to 100khz,t a = +25 c-60- v ripple rejection rr f = 120hz,v i = -9v to -19v 54 59 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 5 electrical characteristics (ka79m12) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -19v,unless otherwise specified) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c -11.5 -12 -12.5 v i o = 5ma to 350ma v i = -14.5v to -30v -11.4 -12 -12.6 line regulation (note1) ? v o t j =+25 c v i = -14.5v to -30v - 8.0 80 mv v i = -15v to -25v - 3.0 50 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 240 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -14.5v to -30v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - -0.8 - mv/ c output noise voltage v n f = 10hz to 100khz,t a =+25 c-75- v ripple rejection rr f = 120hz,v i = -15v to -25v 54 60 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 6 electrical characteristics (ka79m15) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -23v,unless otherwise specified) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c - 14.4 - 15 - 15.6 v i o = 5ma to 350ma v i = -17.5v to -30v -14.25 - 15 -15.75 line regulation (note1) ? v o t j =+25 c v i = -17.5vto -30v - 9.0 80 mv v i = -18v to -28v - 5.0 50 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 240 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -17.5v to -28v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz,t a = +25 c-90- v ripple rejection rr f = 120hz,v i = -18.5v to -28.5v 54 59 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 7 electrical characteristics (ka79m18) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -27v,unless otherwise specified) note; 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c - 17.3 - 18 - 18.7 v i o = 5ma to 350ma v i = -21v to -33v - 17.1 - 18 - 18.9 line regulation (note1) ? v o t j =+25 c v i = -21v to -33v - 9.0 80 mv v i = -24v to -30v - 5.0 80 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 360 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -21v to -33v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz,t a = +25 c-110- v ripple rejection rr f = 120hz,v i = -22v to -32v 54 59 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 8 electrical characteristics (ka79m24) (refer to test circuit, 0 c t j +125 c, l o =350ma, v i = -33v,unless otherwise specified) note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty is used. parameter symbol conditions min. typ. max. unit output voltage v o t j = +25 c - 23 - 24 - 25 v i o = 5ma to 350ma v i = -27v to -38v - 22.8 - 24 - 25.2 line regulation (note1) ? v o t j =+25 c v i = -27v to -38v - 9.0 80 mv v i = -30v to -36v - 5.0 70 load regulation (note1) ? v o t j = +25 ci o = 5.0ma to 500ma - 30 300 mv quiescent current i q t j = +25 c-36ma quiescent current change ? i q i o = 5ma to 350ma - - 0.4 ma v i = -27v to -38v - - 0.4 output voltage drift ? v o / ? ti o = 5ma - -1.0 - mv/ c output noise voltage v n f = 10hz to 100khz,t a = +25 c - 180 - v ripple rejection rr f = 120hz,v i = -28v to -38v 54 58 - db dropout voltage v d i o = 500ma, t j = +25 c-1.1-v short circuit current i sc v i = -35v, t j = +25 c - 140 - ma peak current i pk t j = +25 c - 650 - ma
ka79mxx 9 typical applications figure 1. fixed output regulator figure 2. variable output notes: 1. required for stability. for value given, capacitor must be solid tantalum. 25 f aluminum electrolytic may be substituted. 2. c 2 improves transient response and ripple rejection. do not increase beyond 50 f.
ka79mxx 10 mechanical dimensions package dimensions in millimeters 4.50 0.20 9.90 0.20 1.52 0.10 0.80 0.10 2.40 0.20 10.00 0.20 1.27 0.10 ?.60 0.10 (8.70) 2.80 0.10 15.90 0.20 10.08 0.30 18.95max. (1.70) (3.70) (3.00) (1.46) (1.00) (45 ) 9.20 0.20 13.08 0.20 1.30 0.10 1.30 +0.10 ?.05 0.50 +0.10 ?.05 2.54typ [2.54 0.20 ] 2.54typ [2.54 0.20 ] to-220
ka79mxx 11 mechanical dimensions (continued) package dimensions in millimeters 6.60 0.20 2.30 0.10 0.50 0.10 5.34 0.30 0.70 0.20 0.60 0.20 0.80 0.20 9.50 0.30 6.10 0.20 2.70 0.20 9.50 0.30 6.10 0.20 2.70 0.20 min0.55 0.76 0.10 0.50 0.10 1.02 0.20 2.30 0.20 6.60 0.20 0.76 0.10 (5.34) (1.50) (2xr0.25) (5.04) 0.89 0.10 (0.10) (3.05) (1.00) (0.90) (0.70) 0.91 0.10 2.30typ [2.30 0.20] 2.30typ [2.30 0.20] max0.96 (4.34) (0.50) (0.50) d-pak
ka79mxx 12 ordering information product number package operating temperature ka79m05 to-220 0 ~ + 125 c ka79m06 ka79m08 ka79m12 ka79m15 ka79m18 ka79m24 ka79m05r d-pak ka79m08r ka79m12r
ka79mxx 13
ka79mxx 6/11/01 0.0m 001 stock#dsxxxxxxxx ? 2001 fairchild semiconductor corporation 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 corporation. 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 disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.
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