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?2003 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.0 features ? 1a/3.3v, 5v, 8v, 9v, 12v, 15v output low dropout voltage regulator ? to-220 full-mold package (4pin) ? overcurrent protection, thermal shutdown ? overvoltage protection, short circuit protection ? with output disable function description the ka78rxxc is a low-dropout voltage regulator suitable for various electronic equipments. it provides constant voltage power source with to-220-4 lead full mold package. dropout voltage of ka78rxxc is below 0.5v in full rated current(1a). this regulator has various functions such as peak current protection, thermal shut down, overvoltage protection and output disable function. to-220f-4l 1. vin 2. v o 3. gnd 4. vdis 1 internal block diagram thermal shutdown bandgap reference overvoltage protection soa protection shortcircuit protection 1 4 3 2 vin vdis vo gnd high / low output on / off q1 r1 r2 - + - + 1.4v short-circuit ka78rxxc-series 1a output low dropout voltage regulators
ka78rxxc-series 2 absolute maximum ratings ka78rxxc parameter symbol value unit remark input voltage vin 35 v - disable voltage vdis 35 v - output current io 1.0 a - power dissipation 1 pd1 1.5 w no heatsink power dissipation 2 pd2 15 w with heatsink junction temperature tj +150 c- operating temperature topr -20 ~ +80 c- thermal resistance, junction-to case (note2) r jc 4.31 c/w - thermal resistance, junction-to-air (note2) r ja 48.83 c/w -
ka78rxxc-series 3 electrical characteristics (vin = note3, io = 0.5a, ta = 25 c, unless otherwise specified) note: 1.these parameters, although guaranteed, are not 100% tested in production. 2. junction -to -case thermal resistance test environments. -. pneumatic heat sink fixture. -. clamping pressure 60psi through 12mm diameter cylinder. -. thermal grease applied between pkg and heat sink fixture. 3. ka78r33c :vin = 5v KA78R05C : vin = 7v ka78r08c : vin = 10v ka78r09c : vin = 11v ka78r12c : vin = 15v ka78r15c : vin = 20v 4. ka78r33c :vin = 4v to 10v KA78R05C : vin = 6v to 12v ka78r08c : vin = 9v to 25v ka78r09c : vin = 10v to 25v ka78r12c : vin = 13v to 29v ka78r15c : vin = 16v to 30v parameter symbol conditions min. typ. max. unit output voltage ka78r33c vo - 3.22 3.3 3.38 v KA78R05C - 4.88 5 5.12 ka78r08c - 7.8 8 8.2 ka78r09c - 8.78 9 9.22 ka78r12c - 11.7 12 12.3 ka78r15c - 14.6 15 15.4 load regulation rload 5ma < io < 1a - 0.1 2.0 % line regulation rline note4 - 0.5 2.5 % ripple rejection ratio rr note1 45 55 - db dropout voltage vdrop io = 1a - - 0.5 v disable voltage high vdish output active 2.0 - - v disable voltage low vdisl output disabled - - 0.8 v disable bias current high idish vdis = 2.7v - - 20 a disable bias current low idisl vdis = 0.4v - - -0.4 ma quiescent current iq io = 0a - - 10 ma
ka78rxxc-series 4 typical performance characteristics ka78r33 figure 1. output voltage vs. input voltage figure 2. quiescent current vs. input voltage figure 3. output voltage vs. disable voltage figure 4. output voltage vs. temperature(tj) figure 5. quiescent current vs. temperature(tj) figure 6. dropout voltage vs.junction temperature input voltage vin (v) 4.50 3.75 3.00 2.25 1.50 0.75 5.25 0 0 2 4 6 8 10 output voltage vo(v) rl= rl=3.3 ? ? ? ? 8 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) 0 output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 122.5 4.50 3.75 3.00 2.25 1.50 0.75 5.25 0 3.34 3.32 3.30 3.36 -25 output voltage vo(v) temperature tj( o c) 75 125 02550 100 3.26 3.24 3.22 3.28 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c) 75 125 02550 100 -25 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ]
ka78rxxc-series 5 typical performance characteristics (continued) figure 8. overcurrent protection characteristics (typical value) figure 7. power dissipation vs. temperature(tj) -25 power dissipation p d (w) temperature t j ( o c) 75 125 02550 100 15 10 5 20 0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 6 typical performance characteristics KA78R05C figure 1. output voltage vs. input voltage figure 3. output voltage vs. disable voltage figure 5. quiescent current vs. temperature(tj) figure 2. quiescent current vs. input voltage figure 4. output voltage vs. temperature(tj) figure 6. dropout voltage vs. junction temperature 51015 input voltage vin (v) 6 5 4 3 2 1 7 0 0 output voltage vo(v) rl = rl=5 ? ? ? ? 8 7 6 5 4 3 0 0 output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 2 1 122.5 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c) 75 125 02550 100 -25 i 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) 5.04 5.02 5.00 5.06 -25 output voltage vo(v) temperature tj( o c ) 75 125 02550 100 4.96 4.94 4.92 4.98 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ]
ka78rxxc-series 7 typical performance characteristics (continued) figure 7. power dissipation vs. temperature(tj) -25 power dissipation p d (w) temperature t j ( o c) 75 125 02550 100 15 10 5 20 0 d j output current(a) 00.51.0 relative output voltage(%) 1.5 2.5 2.0 80 60 20 100 0 40 3.0 output current(a) 00.51.0 output current(a) 00.51.0 relative output voltage(%) 1.5 2.5 2.0 80 60 20 100 0 40 3.0 relative output voltage(%) 1.5 2.5 2.0 80 60 20 100 0 40 3.0 figure 8. overcurrent protection characteristics (typical value) 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 8 typical performance characteristics (continued) ka78r08c 510 15 input voltage vin (v) 0 output voltage vo(v) 10 9 8 7 6 5 4 3 2 1 0 20 25 rl= rl=8 ? ? ? ? 8 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 122.5 10 9 8 7 6 5 4 3 2 1 0 8.04 8.02 8.00 8.06 -25 output voltage vo(v) 75 125 02550 100 7.96 7.94 7.92 7.98 temperature tj( o c) 125 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c ) 75 02550 100 -25 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ] figure 1. output voltage vs. input voltage figure 2. quiescent current vs. input voltage figure 3. output voltage vs. disable voltage figure 4. output voltage vs. temperature(tj) figure 5. quiescent current vs. temperature(tj) figure 6. dropout voltage vs.junction temperature
ka78rxxc-series 9 typical performance characteristics (continued) -25 power dissipation p d (w) temperature t j ( o c) 75 125 02550 100 15 10 5 20 0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 7. power dissipation vs. temperature(tj) figure 8. overcurrent protection characteristics (typical value) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 10 typical performance characteristics (continued) ka78r09c 510 15 input voltage vin (v) 0 output voltage vo(v) 10 9 8 7 6 5 4 3 2 1 0 20 25 rl= rl=9 ? ? ? ? 8 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) 0 output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 122.5 10 9 8 7 6 5 4 3 2 1 0 9.04 9.02 9.00 9.06 -25 output voltage vo(v) temperature tj( o c ) 75 125 02550 100 8.96 8.94 8.92 8.98 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c) 75 125 02550 100 -25 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ] figure 4. output voltage vs. temperature(tj) figure 3. output voltage vs. disable voltage figure 1. output voltage vs. input voltage figure 2. quiescent current vs. input voltage figure 6. dropout voltage vs.junction temperature figure 5. quiescent current vs. temperature(tj)
ka78rxxc-series 11 typical performance characteristics (continued) -25 power dissipation p d (w) temperature tj( o c) 75 125 02550 100 15 10 5 20 0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 7. power dissipation vs. temperature(tj) figure 8. overcurrent protection characteristics (typical value) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 12 typical performance characteristics (continued) ka78r12c 51015 input voltage vin (v) 15.0 12.5 10.0 7.5 5.0 2.5 17.5 0 0 output voltage vo(v) rl= rl=12 ? ? ? ? 20 25 8 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) 0 output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 122.5 15.0 12.5 10.0 7.5 5.0 2.5 17.5 0 12.04 12.02 12.00 12.06 -25 output voltage vo(v) temperature tj( o c) 75 125 02550 100 11.96 11.94 11.92 11.98 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c) 75 125 02550 100 -25 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ] figure 2. quiescent current vs. input voltage figure 1. output voltage vs. input voltage figure 4. output voltage vs. temperature(tj) figure 3. output voltage vs. disable voltage figure 5. quiescent current vs. temperature(tj) figure 6. dropout voltage vs.junction temperature
ka78rxxc-series 13 typical performance characteristics (continued) -25 power dissipation p d (w) temperature tj( o c) 75 125 02550 100 15 10 5 20 0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 output current(a) relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 100 0 40 3.0 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 7. power dissipation vs. temperature(tj) figure 8. overcurrent protection characteristics (typical value) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 14 typical performance characteristics (continued) ka78r15c figure 1. output voltage vs. input voltage figure 2. quiescent current vs. input voltage figure 4. output voltage vs. temperature(tj) figure 3. output voltage vs. disable voltage figure 6. dropout voltage vs.junction temperature figure 5. quiescent current vs. temperature(tj) 510 15 input voltage vin (v) 15.0 12.5 10.0 7.5 5.0 2.5 17.5 0 0 output voltage vo(v) rl= rl=15 ? ? ? ? 20 25 8 0 5 10 15 20 0 20 40 60 80 rl= quiescent current iq(ma) input voltage vin(v) 17.5 15.0 12.5 10.0 7.5 0 0 output voltage vo(v) 3 disable voltage vdis (v) 0.5 1.5 5.0 2.5 122.5 15.10 15.05 15.00 15.15 -25 output voltage vo(v) temperature tj( o c) 75 125 02550 100 14.90 14.85 14.80 14.95 10 8 6 4 2 0 quescent current iq(ma) junction temperature tj( o c) 75 125 02550 100 -25 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 1.0a drop out voltage vdrop [v] junction temp tj [ ]
ka78rxxc-series 15 typical performance characteristics (continued) figure 8. overcurrent protection characteristics (typical value) figure 7. power dissipation vs. temperature(tj) -25 power dissipation p d (w) temperature tj( o c) 75 125 02550 100 15 10 5 20 0 output current(a) 3.0 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 0 40 output current(a) 3.0 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 0 40 3.0 relative output voltage(%) 1.5 2.5 00.51.0 2.0 80 60 20 0 40 0123456 1.50 1.75 2.00 2.25 2.50 2.75 output peak current iop (a) input-output differential voltage vin-vo (v) figure 9. output peak currenrt vs. input-output differential voltage
ka78rxxc-series 16 typical application figure 1. application circuit ? ci is required if regulator is located at an appreciable distance from power supply filter. ? co improves stability and transient response.(co > 47 f) + + 1 2 3 4 vin vdis vo gnd disable signal
ka78rxxc-series 17 mechanical dimensions package dimensions in millimeters to-220f-4l
ka78rxxc-series 18 mechanical dimensions (continued) package dimensions in millimeters to-220f-4l (forming)
ka78rxxc-series 19 mechanical dimensions (continued) package dimensions in millimeters spec no. dwg. no. 5 : 1 scale n/a tolerance mm unit d to-220f-4l , short lead title 1. these dimensions do not include mold protrusion . 2. ( ) is reference 3. [ ] is ass'y out quality note pkg outline to-220f-4l (short lead)
ka78rxxc-series 8/26/03 0.0m 001 stock#dsxxxxxxxx ? 2003 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. ordering information product number package operating temperature ka78r33ctu to-220f-4l -20 c to +80 c KA78R05Ctu ka78r08ctu ka78r09ctu ka78r12ctu ka78r15ctu ka78r33cydtu to-220f-4l(forming) KA78R05Cydtu ka78r09cydtu ka78r33ctstu to-220f-4l(short lead) KA78R05Ctstu ka78r08ctstu ka78r09ctstu ka78r12ctstu

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