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ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 september 2014 ka78m05 / lm78m05 / MC78M05 3-terminal 0.5 a positive voltage regulator features ? output current up to 0.5 a ? output voltages of 5 v ? thermal overload protection ? short-circuit protection ? output transistor safe operating area (soa) protection ordering information (1) note: 1. refer to below figure for tm / tf suffix of dpak packing option. product number package packing me thod operating temperature ka78m05tu to-220 (dual gauge) rail 0 to +125 c ka78m05rtm d-pak tape and reel MC78M05cdtx lm78m05ct to-220 (single gauge) rail description the ka78m05 / lm78m05 / MC78M05 series of three- terminal positive regulators is available in the to-220 / d- pak packages, making it useful in a wide range of appli- cations. to-220 d-pak 1. input 2. gnd 3. output 1 1 gnd gnd
ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 2 block diagram figure 1. block diagram absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. in addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. notes: 2. thermal resistance test board. size: 76.2 mm x 114.3 mm x 1.6 mm (1s0p) jedec standard: jesd51-3, jesd51-7 3. assume no ambient airflow. symbol parameter value unit v i input voltage (for v o = 5 v) 35 v r jc thermal resistance, junction-case (2) to-220 (t c = +25 c) 2.5 c/w r ja thermal resistance, junction-air (2, 3) to-220 (t a = +25 c) 66 c/w d-pak (t a = +25 c) 92 t opr operating junction temperature range 0 to +125 c t j(max) maximum junction temperature range 150 c t stg storage temperature range -65 to +150 c output 3 r1 r2 gnd 2 1 input series pass element soa protection current generator starting circuit reference voltage error amplifier thermal protection ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 3 electrical characteristics refer to the test circuits, 0 < t j < +125 c, i o = 350 ma, v i = 10 v, c i = 0.33 f, c o = 0.1 f unless otherwise specified. note: 4. 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. symbol parameter conditions min. typ. max. unit v o output voltage t j = +25 c 4.8 5.0 5.2 v i o = 5 ma to 350 ma, v i = 7 v to 20 v 4.75 5.00 5.25 v o line regulation (4) i o = 200 ma t j = +25 c v i = 7 v to 25 v 100 mv v i = 8 v to 25 v 50 v o load regulation (4) i o = 5 ma to 0.5 a, t j = +25 c 100 mv i o = 5 ma to 200 ma, t j = +25 c50 i q quiescent current t j = +25 c4.06.0ma i q quiescent current change i o = 5 ma to 350 ma 0.5 ma i o = 200 ma, v i = 8 v to 25 v 0.8 v/ t output voltage drift i o = 5 ma t j = 0 to +125 c -0.5 mv/ c v n output noise voltage f = 10 hz to 100 khz 40 v/vo rr ripple rejection f = 120 hz, i o = 300 ma v i = 8 v to 18 v, t j = +25 c 80 db v d dropout voltage t j = +25 c, i o = 500 ma 2 v i sc short-circuit current t j = +25 c, v i = 35 v 300 ma i pk peak current t j = +25 c700ma ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 4 typical applications figure 2. fixed-output regulator figure 3. constant-current regulator notes: 5. c i is required if the regulator is located an appreciable distance from the power supply filter. 6. although no output capacitor is needed for stability, it does improve transient response. 0.1 f c o c i 0.3 f v o v i 1 3 2 ka78m05 lm78m05 MC78M05 0.1 f c o c i 0.33 f i o v i 1 3 2 v xx i o r 1 i o = r 1 +i o vxx ka78m05 lm78m05 MC78M05 ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 5 typical applications (continued) figure 4. circuit for increasing output voltage figure 5. adjustable output regulator (7 to 30 v) figure 6. 0.5 to 10 v regulator 0.1 f c o c i 0.33 f i o v i 1 3 2 v xx v o r 1 r 2 i r1 5i o v o = v xx (1+r 2 /r 1 ) +i o r 2 ka78m05 lm78m05 MC78M05 0.1 f c o c i 0.33 f v o v i 1 3 2 10 k 3 2 4 7 6 lm741 ka78m05 lm78m05 MC78M05 0.1 f c2 c1 0.33 f v o v i 1 3 2 10 k 3 2 4 7 6 lm741 r3 r1 v xx r4 r5 910 9.1 k 13 v < v i < 25 v -7 v < -v i < 17 v _ + v o = v xx r 1 r 4 ka78m05 lm78m05 MC78M05 ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 6 physical dimensions figure 7. to-220, molded, 3lead, jedec variation ab ka78m05 / lm78m05 / MC78M05 ? 3-termina l 0.5 a positive voltage regulator ? 2001 fairchild semiconductor corporation www.fairchildsemi.com ka78m05 / lm78m05 / MC78M05 rev. 1.1.1 7 physical dimensions (continued) figure 8. 3-lead, to-252, jedec to -252 var. ab, surface mount (dpak) 0 , 1 0 , 1 0 , 1 0 , 1 0 $ ; $ & 0 , 1 6 ( ( ' ( 7 $ , / $ % % 0 $ ; ? ? 0 , 1 ' ( 7 $ , / $ 6 & |