features compact surface-mount package (sop-8) output current: 1.0 a low-esr capacitor can be used. low current consumption iq 350 a (i o = 0 a, v c = 2 v) low current consumption iq (off) 1 a (v c = 0 v) low dropout voltage v dif 0.6 v (i o = 1 a) 4 types of output voltages (1.8 v, 2.5 v, 3.3 v, and variable type) available output on/off control pin compatible with ls-ttl built-in dropping type overcurrent, thermal protection circuits applications local power supplies battery-driven electronic equipment absolute maximum ratings si-3000ks series surface-mount, low current consumption, low dropout voltage dropper type unit v v a w c c c/w c/w ratings 17 v in 1.0 0.76 40 to +125 40 to +125 130 22 (t a =25 c) *1: v in (max) and i o (max) are restricted by the relationship pd = (v in - v o ) x i o . calculate these values referring to the power dissipation vs. copper area data shown in this document. *2: when mounted on a glass epoxy board measuring 1600 mm 2 (with 2% copper area). si-3000ks series parameter dc input voltage output control pin voltage output current power dissipation junction temperature storage temperature thermal resistance (junction to ambient air) thermal resistance (junction to lead (pin 7)) symbol v in *1 v c i o *1 p d *1, *2 t j t stg rth (j-a) * rth (j-l)
*1 : refer to the description on the dropout voltage. *2 : the i s1 is specified as the 5% drop point of output voltage v o on the condition that v in = v o + 1 v, and i o = 10 ma. *3 : output is off when the output control pin (v c pin) is open. each input level is equivalent to that for ls-ttl. therefore, the device can be driven directly by an ls-ttl circuit. external dimensions (unit : mm) parameter input voltage output voltage (reference voltage for si-3102ks) dropout voltage line regulation load regulation quiescent circuit current off circuit current temperature coefficient of output voltage ripple rejection overcurrent protection starting current *2 control voltage (output on) *3 control voltage (output off) vc pin control current (output on) control current (output off) output off voltage electrical characteristics (unless otherwise specified, t a = 25 c, v c = 2 v) 0.995max. 0.10 1.27 0.4 0.1 0.4 0.1 0.15 +0.1 5.1 0.4 1.27 8765 1234 4.4 0.2 1.5 0.1 1.55 0.15 0.05 0.05 6.2 0~10 0.5 0.1 0.05 0.12 m pin arrangement q v c w v in e v o r sence (adj for si-3012ks) t gnd y gnd u gnd i gnd plastic mold package type flammability: ul 94v-0 weight: approx. 0.1 g si-3000ks series symbol v in v o (v ref ) conditions v dif conditions conditions ? v oline conditions ? v oload conditions i q conditions i q (off) conditions ? v o / ? t a conditions r rej conditions i s1 conditions v c , ih v c , il i c , ih conditions i c , il conditions v o (off) ratings si-3012ks (variable type) si-3018ks si-3025ks SI-3033KS min. typ. max. min. typ. max. min. typ. max. min. typ. max. 2.4 *1 *1 *1 1.24 1.28 1.32 1.764 1.800 1.836 2.45 2.50 2.55 3.234 3.300 3.366 v in =3.3v, i o =10ma v in =2.5v, i o =10ma v in =3.3v, i o =10ma v in =5v, i o =10ma 0.3 0.4 0.4 i o =0.5a (v o =2.5v) i o =0.5a i o =0.5a 0.6 0.6 0.6 0.6 i o =1a (v o =2.5v) i o =1a i o =1a i o =1a 10 10 10 15 v in =3.3 to 8v, i o =10ma (v o =2.5v) v in =2.5 to 6v, i o =10ma v in =3.3 to 8v, i o =10ma v in =5 to 10v, i o =10ma 40 40 40 50 v in =3.3v, i o =0 to 1a (v o =2.5v) v in =2.5v, i o =0 to 1a v in =3.3v, i o =0 to 1a v in =5v, i o =0 to 1a 350 350 350 350 v in =3.3v, i o =0a, v c =2v, r2=24k ? v in =2.5v, i o =0a, v c =2v v in =3.3v, i o =0a, v c =2v v in =5v, i o =0a, v c =2v 1111 v in =3.3v, v c =0v v in =2.5v, v c =0v v in =3.3v, v c =0v v in =5v, v c =0v 0.3 0.3 0.3 0.3 t j =0 to 100 c (v o =2.5v) t j =0 to 100 ct j =0 to 100 ct j =0 to 100 c 55 55 55 55 v in =3.3v, f=100 to 120h z (v o =2.5v) v in =3.3v, f=100 to 120h z v in =3.3v, f=100 to 120h z v in =5v, f=100 to 120h z 1.2 1.2 1.2 1.2 v in =3.3v (v o =2.5v) v in =2.5v v in =3.3v v in =5v 2.0 2.0 2.0 2.0 0.8 0.8 0.8 0.8 40 40 40 40 v c =2v 50 50 50 50 v c =0v 0.5 0.5 0.5 0.5 unit v v mv mv a a mv/ c db a v a a v
block diagram standard circuit connection diagram c in : input capacitor (22 f or larger) this capacitor is necessary if an inductance is included in the input line or if the wiring length is long. c o : output capacitor (22 f or larger) the si-3000ks series designed for use with very low-esr ceramics output capacitor. when using the electrolytic capacitor, the si-3000ks series may oscillate at a low temperature. si-3000ks series si-3012ks si-3018ks, si-3025ks, SI-3033KS si-3012ks si-3018ks, si-3025ks, SI-3033KS r 1 , r 2 : output voltage setting resistors the output voltage can be set by connecting r 1 and r 2 as shown above. the recommended value of r 2 is 24 k ? . r1=(v o v adj ) (v adj /r2) 2 v in 1 ref v c v out adj gnd 4 8 7 6 5 3 tsd - + 2 v in 1 ref v c v out sense gnd 4 8 7 6 5 3 tsd - + gnd 5 to 8 v in c in r1 r2 2 v o c o 3 v c 1 adj 4 + load gnd 5 to 8 v in c in r2 2 v o c o 3 v c 1 sense 4 load
reference data thermal resistance vs. copper area power dissipation vs. copper area example of solder pattern design symbol dimensions (mm) e1 5.72 e 1.27 0.15 0.2 1 0.2 to 0.5 2 0.2 l 0.6 b2 0.76 l2 l+ 1+ 2 *1 the inner frame stage on which a monolithic ic is mounted is directly connected to the gnd pins (pins 5 through 8). by expanding the area of the copper connected to the gnd pins, the heat radiation can be improved. it is recommended to design the solder pattern by opening the insulation film of the solder patterns of pins 5, 6, 7, and 8, on the wide gnd pattern as shown in figure 1. (reference value conforming to eiaj standard ed-7402-1) calculating junction temperature measure the temperature tl of the lead of the gnd pin (pin 7) by using a thermocouple, and substitute the measured value into the following expression to calculate the junction temperature. t j =p d j l + t l ( j l = 22 c/w) si-3000ks series l e l l b 1 b 2 e e1 b e eee e1 l2 b2 *1 figure 1 eee 8 gnd pattern 1 7 2 6 3 5 b2 e1 l2 4 thermal resistance j-a ( c/w) copper area (mm 2 ) 10 100 140 120 100 80 60 40 1000 area of pc board : 40 40mm power dissipation p d (w) copper area (mm 2 ) 10 100 1.2 1 0.8 0.6 0.4 0.2 0 1000 tj=100 c area of pc board : 40 40mm ta=25 c ta=50 c ta=80 c
taping specifications si-3000ks series 160 to 240mm (about 25 pockets) 1,000pcs 42 8 1.55 trailer vacant seal section ic compartments vacant seal section leader (1,000 pockets) 160 to 240mm 400 to 600mm tape draw-out direction (about 25 pockets) cover tape 2 7.0 6.7 5.5 12 t=3 5.75 5.55 2.1 (4.75) hole hole hole 2 3 3 13 10 5 5 4 hole hole hole hole hole 6 0 60 3 r22 10 b 13 0.2 60 1.5 180 13 0.3 15.4 1.0 expanded view of center 11.9 10.5 r 22 hole hole hole hole 6 0 60 30 carrier tape surface resistance of em- bossed tape: 100 k ? maxi- mum (among 10 pockets) reel: number of packed products: 1000 (unit : mm)
typical characteristics examples of si-3012ks and si-3025ks (t a =25 c) *v out =2.5 v for si-3012ks (rs=24 k ? ) dropout voltage rise characteristics line regulation load regulation overcurrent protection characteristics input voltage vs. quiescent current circuit current control terminal voltage vs. output voltage control terminal voltage vs. control terminal current si-3000ks series 1 0.8 0.6 0.4 0.2 0 0.2 0.4 output current a 0.6 0.8 1 dropout voltage v 3 2 1 01 2 3 4 input voltage v output voltage v i o =0 to 1a 0.25a step 2.54 2.52 2.50 2.48 2.46 2.44 2.42 2.40 0246810 input voltage v output voltage v i o =0 to 1a 0.25a step 2.52 2.50 2.48 2.46 2.44 2.42 2.40 0 0.2 0.4 output current a 0.6 0.8 1 output voltage v v in =3.3v 4v 5v 6v 8v 3 2 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 output current a output voltage v v in =3.3v 4v 5v 6v 0 2 4 6 8 1012141618 600 500 400 300 200 100 input voltage v quiescent current a i o =0a v c =2v 60 40 20 02468 input voltage v gnd current ma i o =1a 0.75a 0.25a 0.5a 0a 3 2 1 0 0.5 1 1.5 2 control ternimal voltage v output voltage v i o =0a 30 20 25 15 5 10 01 234 control terminal voltage v control terminal current a
typical characteristics examples of SI-3033KS (t a =25 c) dropout voltage rise characteristics line regulation load regulation overcurrent protection characteristics input voltage vs. quiescent current circuit current control terminal voltage vs. output voltage control terminal voltage vs. control terminal current si-3000ks series 1 0.8 0.6 0.4 0.2 0 0.2 0.4 output current a 0.6 0.8 1 dropout voltage v 4 3 2 1 01 234 input voltage v output voltage v i o =0 to 1a 0.25a step 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 02468 12 10 input voltage v output voltage v i o =0 to 1a 0.25a step 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 0.2 0.4 output current a 0.6 0.8 1 output voltage v v in =4v 5v 6v 8v 4 3 2 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 output current a output voltage v v in =4v 5v 6v 02 4 681012141618 600 500 400 300 200 100 quiescent current a i o =0a v c =2v input voltage v 60 40 20 024 68 input voltage v gnd current ma i o =1a 0.75a 0.25a 0.5a 0a 4 3 2 1 0 0.5 1 1.5 2 control terminal voltage v output voltage v i o =0a 30 20 25 15 5 10 01 234 control terminal voltage v control terminal current a
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