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2.85 to 12 volt fixed positive local voltage regulator issue 3 - december 2001 device description the zr78l series three terminal fixed positive voltage regulators feature internal circuit current limit and thermal shutdown making the devices difficult to destroy. the circuit design allows creation of any custom voltage in the range 2.85 to 12 volts. the devices are available in a small outline surface mount package, ideal for applications where space saving is important, as well as through hole to92 style packaging. the devices are suited to local voltage regulation applications, where problems could be encountered with distributed single source regulation, as well as more general voltage regulation applications. the zr78l series show performance characteristics superior to other local voltage regulators. the initial output voltage is maintained to within 2.5% with a quiescent current of typically 350 a. output voltage change, with input voltage and load current, is much lower than competitive devices. the zr78l devices are completely stable with no external components. the device will shut down under thermal overload conditions but as the device cools, regulation will restart. features ? small outline sot223 package ? so8 package (3.3v and 5.0v) ? to92 package ? 2.85 to 12 volt ? output current up to 200ma ? tight initial tolerance ? low quiescent current ? -55 to 125c temperature range ? no external components ? internal thermal shutdown ? internal short circuit current limit voltage range zr78l028 2.85v zr78l03 3.0v zr78l033 3.3v zr78l04 4.0v zr78l048 4.85v zr78l05 5.0v zr78l052 5.2v zr78l057 5.7v zr78l06 6.0v zr78l07 7.0v zr78l08 8.0v zr78l085 8.5v zr78l09 9.0v zr78l10 10.0v zr78l12 12.0v zr78l series 4-200
zr78l series zr78l028 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =6.85v symbol parameter conditions min. typ. max. units v o output voltage 2.78 2.85 2.92 v i o =1 to 200ma t 2.736 2.964 v v in =4.85 to 20v i o =1 to 100ma t 2.736 2.964 v d v o line regulation v in =4.85 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =4.85 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =5.85 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 4.85 4.55 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c t =t j =-55 to 125c electrical characteristics: notes: 1. the maximum operating input voltage and output current of the device will be governed by the maximum power dissipation of the selected package. maximum package power dissipation is specified at 25 c and must be linearly derated to zero at t amb =125c. 2. the following data represents pulse test conditions with junction temperatures as indicated at the initiation of the test. continuous operation of the devices with the stated conditions might exceed the power dissipation limits of the chosen package. 3. maximum power dissipation, for the sot223 and so8 packages, is calculated assuming that the device is mounted on a pcb measuring 2 inches square. 4 . the shut down feature of the device operates if its temperature exceeds its design limit as might occur during external faults, short circuits etc. if the regulator is supplied from an inductive source then a large voltage transient, on the regulator input, can result should the shut down circuit operate. it is advised that a capacitor (1 m f or greater) should be applied across the regulator input to ensure that the maximum voltage rating of the device is not exceeded under shutdown conditions. absolute maximum rating input voltage 20v output current(i o ) 200ma operating temperature -55 to 125c storage temperature -65 to 150c power dissipation (t amb =25c) sot223 2w(note 3) to92 600mw s08 780mw(note 3)
zr78l03 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =7v symbol parameter conditions min. typ. max. units v o output voltage 2.92 3.0 3.08 v i o =1 to 200ma t 2.88 3.12 v v in =5 to 20v i o =1 to 100ma t 2.88 3.12 v d v o line regulation v in =5 to 20v 1040mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =5 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =6 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 5 4.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c zr78l033 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =7.3v symbol parameter conditions min. typ. max. units v o output voltage 3.218 3.3 3.382 v i o =1 to 200ma t 3.168 3.432 v v in =5.3 to 20v i o =1 to 100ma t 3.168 3.432 v d v o line regulation v in =5.3 to 20v 7.5 30 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =5.3 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 50 m v rms d v in / d v o ripple rejection v in =6.3 to 18v f=120hz 50 64 db v in input voltage required to maintain regulation 5.3 5 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c t =t j = -55 to 125 c zr78l series
zr78l04 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =8v symbol parameter conditions min. typ. max. units v o output voltage 3.9 4.0 4.1 v i o =1 to 200ma t 3.84 4.16 v v in =6 to 20v i o =1 to 100ma t 3.84 4.16 v d v o line regulation v in =6 to 20v 1040mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =6 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =7 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 65.3 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c zr78l series zr78l048 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =8.85v symbol parameter conditions min. typ. max. units v o output voltage 4.729 4.85 4.971 v i o =1 to 200ma t 4.656 5.044 v v in =6.8 to 20v i o =1 to 100ma t 4.656 5.044 v d v o line regulation v in =6.85 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =6.85 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 50 m v rms d v in / d v o ripple rejection v in =7.85 to 18v f=120hz 50 64 db v in input voltage required to maintain regulation 6.85 6.55 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c t =t j = -55 to 125c
zr78l12test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =16v symbol parameter conditions min. typ. max. units v o output voltage 11.7 12 12.3 v i o =1 to 200ma t 11.52 12.48 v v in =14 to 20v i o =1 to 100ma t 11.52 12.48 v d v o line regulation v in =14 to 20v 12 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 9 3 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =14 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 150 m v rms d v in / d v o ripple rejection v in =15 to 18v f=120hz 43 57 db v in input voltage required to maintain regulation 14 13.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.25 mv/c t =t j = -55 to 125 c zr78l series zr78l10test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =14v symbol parameter conditions min. typ. max. units v o output voltage 9.75 10 10.25 v i o =1 to 200ma t 9.6 10.4 v v in =12 to 20v i o =1 to 100ma t 9.6 10.4 v d v o line regulation v in =12 to 20v 12 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 9 3 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =12 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 150 m v rms d v in / d v o ripple rejection v in =13 to 18v f=120hz 43 57 db v in input voltage required to maintain regulation 12 11.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.25 mv/c
-50 -25 0 25 50 75 100 125 temperature ( c) 0 short-circuit output current (ma) peak output current vs. temperature 500 400 300 200 100 0 -50 -25 0 25 50 75 100 125 temperature ( c) io=100ma io=200ma 2.5 2.0 1.5 1.0 0.5 0 drop-out voltage (v) 0 drop-out voltage vs. temperature -50 -25 0 25 50 75 100 125 temperature ( c) 0 450 400 350 300 250 quiescent current (ua) quiescent current vs. temperature i o = 0 v in =v o + 4v -50 -25 0 25 50 75 100 125 temperature ( c) output voltage (v) output voltage temperature coefficient 9.08 9.04 9.00 8.96 8.92 0 v in = v o + 4v i o = 5ma -50 -25 0 25 50 75 100 125 2.85 2.82 temperature ( c) output voltage (v) output voltage temperature coefficient 2.84 2.86 5.70 5.66 -50 -25 0 25 50 75 100 125 temperature ( c) output voltage (v) output voltage temperature coefficient 4.00 3.96 zr78l04 zr78l057 3.98 3.94 5.68 5.72 zr78l09 2.99 3.00 3.01 2.98 zr78l028 zr78l03 i o = 5ma v in = v o + 4v i o = 5ma v in = v o + 4v v o= 0 v in =10v typical characteristics zr78l028 zr78l03 zr78l04 zr78l057 zr78l09 zr78l series
-50 -25 0 25 50 75 100 125 temperature ( c) short-circuit output current (ma) peak output current v temperature 500 400 300 200 100 0 -50 -25 0 25 50 75 100 125 temperature ( c) i o = 100ma i o = 200ma 2.5 2.0 1.5 1.0 0.5 0 drop-out voltage (v) drop-out voltage v temperature -50 -25 0 25 50 75 100 125 temperature ( c) 450 400 350 300 250 quiescent current (ua) quiescent current v temperature -50 -25 0 25 50 75 100 125 temperature ( c) output voltage (v) output voltage temperature coefficient 10.08 10.04 10.00 9.96 9.92 v in =v o +4v 3.30 3.28 zr78l033 -50 -25 0 25 50 75 100 125 5.00 4.98 temperature ( c) output voltage (v) output voltage temperature coefficient zr78l05 3.27 3.29 4.99 5.01 8.00 7.96 -50 -25 0 25 50 75 100 125 temperature ( c) output voltage (v) output voltage temperature coefficient 6.00 5.96 zr78l06 zr78l08 5.98 5.94 7.98 8.02 zr78l10 i o =5ma v in =v o +4v i o =5ma v in =v o +4v i o =5ma v in =v o +4v i o =0 v in = 10v i o =0 typical characteristics zr78l033 zr78l05 zr78l06 zr78l08 zr78l10 zr78l series
zr78l057 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =9.7v symbol parameter conditions min. typ. max. units v o output voltage 5.557 5.7 5.843 v i o =1 to 200ma t 5.47 5.93 v v in =7.7 to 20v i o =1 to 100ma t 5.47 5.93 v d v o line regulation v in =7.7 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 7 2.5 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =7.7 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 90 m v rms d v in / d v o ripple rejection v in =8.7 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 7.7 7.4 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.15 mv/c zr78l06 test conditions (unless otherwise stated):t j =25c, io=100ma, v in =10v symbol parameter conditions min. typ. max. units v o output voltage 5.85 6 6.15 v i o =1 to 200ma t 5.76 6.24 v v in =8 to 20v i o =1 to 100ma t 5.76 6.24 v d v o line regulation v in =8 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 7 2.5 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =8 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 90 m v rms d v in / d v o ripple rejection v in =9 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 8 7.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.15 mv/c t =t j = -55 to 125 c zr78l series
zr78l052 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =9.2v symbol parameter conditions min. typ. max. units v o output voltage 5.070 5.2 5.330 v i o =1 to 200ma t 4.99 5.41 v v in =7.2 to 20v i o =1 to 100ma t 4.99 5.41 v d v o line regulation v in =7.2 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =7.2 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =8.2 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 7.2 6.9 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c t =t j = -55 to 125 c zr78l05 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =9v symbol parameter conditions min. typ. max. units v o output voltage 4.875 5 5.125 v i o =1 to 200ma t 4.8 5.2 v v in =7 to 20v i o =1 to 100ma t 4.8 5.2 v d v o line regulation v in =7 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =7 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =8 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 7 6.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c zr78l series
zr78l09test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =13v symbol parameter conditions min. typ. max. units v o output voltage 8.775 9.0 9.225 v i o =1 to 200ma t 8.64 9.36 v v in =11 to 20v i o =1 to 100ma t 8.64 9.36 v d v o line regulation v in =11 to 20v 12 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 9 3 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =11 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 150 m v rms d v in / d v o ripple rejection v in =12 to 18v f=120hz 43 57 db v in input voltage required to maintain regulation 11 10.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.25 mv/c t =t j = -55 to 125c zr78l series zr78l085 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =12.5v symbol parameter conditions min. typ. max. units v o output voltage 8.288 8.5 8.712 v i o =1 to 200ma t 8.16 8.84 v v in =10 to 20v i o =1 to 100ma t 8.16 8.84 v d v o line regulation v in =10.5 to 20v 11 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 8 3 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =10.5 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 115 m v rms d v in / d v o ripple rejection v in =11.5 to 18v f=120hz 44 60 db v in input voltage required to maintain regulation 10.5 10.2 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.25 mv/c
typical characteristics thermal resistance (c/w) 1m 10m 100m 10 1 0 8 16 24 32 40 48 d=0 d=0.05 d=0.1 d=0.2 d=0.5 d=1 pulse width(s) thermal resistance v pulse width thermal resistance v pulse width thermal resistance (c/w) sot223 package 01020 30 40 50 -1.0 -0.5 0 +0.5 output voltage deviation ti me ( us ) line transient response output voltage deviation (v) input voltage i o = 100ma c out = 0 dv in /dt = 5v/ m s (v + 9) (v + 4) o o 01020 30 40 50 -1.0 -0.5 0 +0.5 0 output voltage deviation load current time (us) output voltage deviation (v) load transient response v in = v o + 4v c out = 0 di o /dt = 1a/ m s 100 ma 0 10 20 30 40 50 60 70 80 90 10 100 1k 10k 100k ripple frequency (hz) ripple rejection (db) i o = 100ma v in = v out + 3v d v in = 200mv p/p output impedance vs. frequency ripple rejection vs. ripple frequency output impedance (ohms) pulse width (s) 0 20 40 60 80 100 120 140 160 d=0 d=0.05 d=0.1 d=0.2 d=0.5 d=1 to92 package 10m 100m 10 1m 1 0 100 1k 10k 100k 10 1.0 0.1 0.01 frequency (hz) output impedance (ohms) i o = 100ma v in = v out + 4v zr78l09 zr78l057 zr78l04 zr78l028 zr78l03 zr78l028 zr78l03 zr78l04 zr78l09 zr78l057 zr78l028 zr78l03 zr78l04 zr78l057 zr78l09 zr78l series
10 100 10 1ms 1s 0 20 40 60 80 100 120 140 160 d=0 d=0.05 d=0.1 d=0.2 d=0.5 d=1 thermal resistance ( c/w) pulse width thermal resistance v pulse width to92 package 01020 30 40 50 -1.0 -0.5 0 +0.5 output voltage deviation time ( m s) line transient response output voltage deviation (v) input voltage io=100ma c out =0 dv in /dt =5v/us (vo + 9) (vo+ 4) 01020 30 40 50 -1.0 -0.5 0 +0.5 0 output voltage deviation load current time ( m s) output voltage deviation (v) load transient response v = v + 4v c = 0 di /dt =1a/ m s in o out o 100 ma 0 10 20 30 40 50 60 70 80 90 10 100 1k 10k 100k ripple frequency (hz) ripple rejection (db) io = 100ma vin = vout + 3v d vin = 200mv p/p 100 1k 10k 100k 10 1.0 0.1 0.01 output impedance (ohms) frequency (hz) i o =100ma v in =v out +4v output impedance v frequency ripple rejection v ripple frequency typical characteristics zr78l10 zr78l08 zr78l06 zr78l05 zr78l033 10 100 10 1ms 1s 0 8 16 thermal resistance ( c/w) pulse width thermal resistance v pulse width 24 32 40 48 zr78l10 zr78l08 zr78l06 zr78l05 zr78l033 sot223 package zr78l series zr78l033 zr78l05 zr78l06 zr78l08 zr78l10
zr78l08 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =12v symbol parameter conditions min. typ. max. units v o output voltage 7.8 8 8.2 v i o =1 to 200ma t 7.68 8.32 v v in =10 to 20v i o =1 to 100ma t 7.68 8.32 v d v o line regulation v in =10 to 20v 11 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 8 3 30 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =10 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 115 m v rms d v in / d v o ripple rejection v in =11 to 18v f=120hz 44 60 db v in input voltage required to maintain regulation 10 9.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.25 mv/c t =t j = -55 to 125c zr78l07 test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =11v symbol parameter conditions min. typ. max. units v o output voltage 6.825 7 7.175 v i o =1 to 200ma t 6.72 7.28 v v in =9 to 20v i o =1 to 100ma t 6.72 7.28 v d v o line regulation v in =9 to 20v 10 40 mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t 350 600 m a d l q quiescent current change i o =1 to 200ma v in =9 to 20v 100 100 m a m a v n output noise voltage f=10hz to 10khz 75 m v rms d v in / d v o ripple rejection v in =10 to 18v f=120hz 48 62 db v in input voltage required to maintain regulation 9 8.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t 0.1 mv/c zr78l series
typical characteristics zr78l048 zr78l052 zr78l07 zr78l085 zr78l12 output voltage temperature coefficient temperature (c) 025 75 50 output voltage (v) -50 -25 100125 4.90 5.15 5.20 5.25 4.80 4.85 io = 10ma vin = vout + 4v zr78l052 zr78l048 output voltage temperature coefficient temperature (c) 025 75 50 output voltage (v) -50 -25 100125 7.10 8.55 8.45 8.50 6.90 7.00 io = 10ma vin = vout + 4v zr78l085 zr78l07 output voltage temperature coefficient temperature (c) 025 75 50 output voltage (v) -50 -25 100125 12.10 12.00 11.90 12.05 11.95 io = 10ma vin = vout + 4v zr78l12 quiescent current v temperature temperature (c) 025 75 50 quiescent current (ua) -50 -25 100 125 500 450 400 350 300 io=0 vin=vout+4v peak output current v temperature temperature (c) 025 75 50 0 short-circuit output current (ma) 100 500 400 300 200 -50 -25 100 125 vo = 0 vin= 10v drop-out votlage v temperature temperature (c) 025 75 50 0 drop-out voltage (v) 0.5 2.5 2.0 1.5 1.0 -50 -25 100125 io= 200ma io= 100ma zr78l series
so8 package suffix ? n8 top view to92 package suffix ? c bottom view sot223 package suffix ? g top view ? connect pin 4 to pin 2 or leave pin 4 electrically isolated connection diagrams part no package partmark zr78l s c to92 zr78l s zr78l s g sot223 zr78l s zr78l s n8 so8 zr78l s s voltage option eg 3v device in to92 package part number zr78l03c part marked zr78l03 eg 12v device in sot223 package part number zr78l12g part marked zr78l12 eg 5v device in so8 package part number zr78l05n8 part marked zr78l05 options ordering information voltage voltage options to92 sot223 so8 2.85v 028 3.0v 03 3.3v 033 4.0v 04 4.8v 048 5.0v 05 5.2v 052 5.7v 057 6.0v 06 7.0v 07 8.0v 08 8.5v 085 9.0v 09 10.0v 10 12.0v 12 zr78l series 4-217
zr78l series line transient response time (s) 20 30 50 40 output voltage deviation (v) +0.2 0 010 -0.2 vo+4 vo+9 io= 100ma cout= 0 dvin/dt= 5v/us input voltage output voltage deviation load transient response time (us) 20 30 50 40 output voltage deviation (v) +0.2 0 010 -0.2 0 100ma load current output voltage deviation vin= vout+4v cout= 0 dio/dt= 1a/us thermal r esistance v pulse width pulse width (s) 1m 100m thermal resistance (c/w) 0 60 1 10 10m 20 40 80 100 120 140 160 d=1 d=0.5 d=0.2 d=0.1 d=0.05 d=0 to92 package thermal resistance v pulse width pulse width (s) 1m 100m thermal resistance (c/w) 0 24 1 10 10m 8 16 32 40 48 sot223 package d=1 d=0.5 d=0.2 d=0.1 d=0.05 d=0 output impedance v frequency frequency (hz) 10 1k output impedance (ohms) 0.01 10 10k 100k 100 0.1 1 io= 100ma vin= vout+4v zr78l12 zr78l085 zr78l07 zr78l052 zr78l048 ripple rejection v ripple frequency frequency (hz) 100 10k open loop gain (db) 0 50 100k 1m 1k 40 30 20 10 70 60 80 90 zr78l048 zr78l052 zr78l07 zr78l085 zr78l12 io= 100ma vin= vout+4v vin= 200mv pk/pk typical characteristics zr78l048 zr78l052 zr78l07 zr78l085 zr78l12
thermal characteristics zr78l series thermal r esistance v pulse width pulse width (s) 1m 100m thermal resistance (c/w) 0 60 110 10m 20 40 80 100 120 140 160 so8 package d=0.2 d=0.1 d=0.05 d=0 power dissipation derating ambient temperature (c) -50 0 maximum power dissipation (w) 0 1.0 25 50 -25 0.8 0.6 0.4 0.2 1.4 1.2 1.6 1.8 75 100125 2.0 sot223 so8 to92 100 100 d=1 d=0.5
q14 q16 q17 q11 r7 r4 r3 q18 q19 r5 q20 q13 q25 q4 q5 q1 r1 q3 c1 q6 q7 r2 q8 r14 q10 r9 r13 v in v out gnd r6 q9 q12 q21 schematic diagram applications fixed output regulator adjustable output regulator input output gnd zr78l*** input output gnd zr78l*** r1 r2 iq vo= vreg + (vreg/r1 + iq)r2 current regulator input output zr78l*** r1 iq io= (vreg/r1) + iq zr78l series

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