standard application circuit a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0v above the output voltage even during the low point on the input ripple voltage. xx = these two digits of the type number indicate voltage. * = cin is required if regulator is located an appreciable distance from power supply filter. ** = co is not needed for stability; however, it d oes improve transient response. absolute maximum rating (ta = 25 o c unless otherwise noted) parameter symbol limit unit input voltage v in -35 v power dissipation p d internal limited w junction temperature t j +150 o c storage temperature range t stg -65~+150 o c thermal resistance - junction to case to-220 r ? jc 3 o c/w thermal resistance - junction to ambient to-220 r ? ja 50 o c/w note: * follow the derating curve 79M05/79m12 pb free plating product 79M05/79m12 pb features output voltage: -5 & -12v output current up to 1a no external components required internal thermal overload protection internal short-circuit current limiting output transistor safe-area compensation output voltage offered in 4% tolerance ? 79M05/79m12 1 ampere surface mount negative three terminal voltage regulators dpak/to-252 to-252 5 to-252 60 ? 2006 thinki semiconductor co., ltd. http://www.thinkisemi.com/ page 1/3 rev.05
79M05 electrical characteristics (vin= -10v, iout=500ma, 0 o c tj 125 o c, cin=0.33uf, cout=0.1uf; unless otherwise specifi ed.) parameter symbol test condition min typ max unit output voltage vout tj=25 o c -4.80 -5 -5.20 v -7.5v vin -20v, 10ma iout 1a, pd 15w -4.75 -5 -5.25 line regulation regline tj=25 o c -7.5v vin -25v -- 3 100 mv -8v vin -12v -- 1 50 load regulation regload tj=25 o c 10ma iout 1a -- 15 100 250ma iout 750ma -- 5 50 quiescent current iq iout=0, tj=25 o c -- 4 8 ma quiescent current change ? iq -7.5v vin -25v -- -- 1.3 10ma iout 1a -- -- 0.5 output noise voltage vn 10hz f 100khz, tj=25 o c -- 40 -- v ripple rejection ratio rr f=120hz, -8v vin -18v 62 74 -- db voltage drop vdrop iout=1a, tj=25 o c -- 2 -- v output short circuit current ios tj=25 o c -- 750 -- ma peak output current io peak tj=25 o c -- 2.1 -- a temperature coefficient of output voltage ? vout/ ? tj iout=10ma, 0 o c tj 125 o c -- -0.1 -- mv/ o c 79m12 electrical characteristics (vin= -19v, iout=500ma, 0 o c tj 125 o c, cin=0.33uf, cout=0.1uf; unless otherwise specifi ed.) parameter symbol test condition min typ max unit output voltage vout tj=25 o c -11.53 -12 -12.48 v -14.5v vin -27v, 10ma iout 1a, pd 15w -11.42 -12 -12.60 line regulation regline tj=25 o c -14.5v vin -30v -- 10 240 mv -15v vin -19v -- 3 120 load regulation regload tj=25 o c 10ma iout 1a -- 12 240 250ma iout 750ma -- 4 120 quiescent current iq tj=25 o c, iout=0 -- 4.3 8 ma quiescent current change ? iq -14.5v vin -30v -- -- 1 10ma iout 1a -- -- 0.5 output noise voltage vn 10hz f 100khz, tj=25 o c -- 75 -- uv ripple rejection ratio rr f=120hz, -15v vin -25v 55 70 -- db voltage drop vdrop iout=1a, tj=25 o c -- 2 -- v output short circuit current ios tj=25 o c -- 350 -- ma peak output current io peak tj=25 o c -- 2.1 -- a temperature coefficient of output voltage ? vout/ ? tj iout=10ma, 0 o c tj 125 o c -- -1 -- mv/ o c pulse testing techniques are used to maintain the junction temperature as close to the ambient temper ature as possible, and thermal effects must be taken into ac count separately. this specification applies only for dc power dissi pation permitted by absolute maximum ratings. ? 79M05/79m12 ? 2006 thinki semiconductor co., ltd. http://www.thinkisemi.com/ page 2/3 rev.05
electrical characteristics curve figure 1. worse case power dissipation as a function of ambient temperature figure 2. peak output current as a function of input-output differential voltage figure 3. ripple rejection as a function of frequency figure 4. ripple rejection as a function of output voltage figure 5. output voltage as a function of junction temperature figure 5. output voltage as a function of junction temperature ? 79M05/79m12 ? 2006 thinki semiconductor co., ltd. http://www.thinkisemi.com/ page 3/3 rev.05
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