68 ics 1-1-4 linear regulator ics absolute maximum ratings recommended operating conditions unit v v a w w c c c c/w c/w ratings 16 v in 1 1.16 1.1 ?0 to +150 ?0 to +150 ?0 to +150 36 100 symbol v in v c i o p d1 *1 p d2 *2 t j *3 t op t stg j-l j-a *2 parameter dc input voltage output control terminal voltage dc output current power dissipation junction temperature operating ambient temperature storage temperature thermal resistance (junction to lead (pin 8)) thermal resistance (junction to ambient air) parameter dc input voltage range dc output current range operating junction temperature operating ambient temperature symbol v in i o t jop t aop unit v a c c *1: v in (max) and i o (max) are restricted by the relation p d = (v in ?v o ) i o . please calculate these values referring to the reference data on page 69. *2: refer to the dropout voltage parameter. (t a =25 c) features compact surface-mount package (sop8) output current: 1 a low circuit current at output off: iq(off) 1 a (v c = 0 v) low dropout voltage: v dif 0.8 v (at i o = 1 a) v dif 1.2 v (i o = 1 a) for si-3018lsa ? types of output voltages (1.8 v, 2.5 v, 3.3 v, 5.0 v) available output on/off control terminal voltage compatible with ls-ttl built-in foldback-type-overcurrent and thermal protection circuits applications auxiliary power supplies for pc battery-driven electronic equipment ratings si-3018lsa si-3025lsa si-3033lsa si-3050lsa 3.1 to 3.5 *1 *2 to 3.5 *1 *2 to 5.2 *1 *2 to 8.0 0 to 1 ?0 to +125 ?0 to +85 electrical characteristics (t a =25 c, v c =2v, unless otherwise specified) unit v v mv mv mv/ c db ma a a v a a parameter output voltage dropout voltage line regulation load regulation t emperature coefficient of output voltage ripple rejection quiescent circuit current circuit current at output off overcurrent protection starting current *1,3 control voltage (output on) *2 control voltage (output off) *2 v c control current (output on) t erminal control current (output off) symbol v o conditions v dif conditions conditions ? v line conditions ? v oload conditions ? v o / ? t a conditions r rej conditions i q conditions i q (off) conditions i s1 conditions v c , ih v c , il i c , ih conditions i c , il conditions *1: is 1 is specified at the 5% drop point of output voltage v o on the condition that v in = 3.3 v (5 v for si-3033lsa), and i o = 0.5 a. *2: output is off when the output control terminal vc is open. each input level is equivalent to ls-ttl level. therefore, the de vice can be driven directly by ls-ttls. *3: these products cannot be used in the following applications. because these applications require a certain current at start-u p and so the built-in foldback-type overcurrent protection may cause errors during start-up stage. (1) constant current load (2) positive and negative power supply (3) series-connected power supply (4) v o adjustment by raising ground voltage ratings si-3018lsa si-3025lsa si-3033lsa si-3050lsa min. typ. max. min. typ. max. min. typ. max. min. typ. max. 1.764 1.800 1.836 2.450 2.500 2.550 3.234 3.300 3.366 4.90 5.00 5.10 v in =3.3v, i o =0.5a v in =3.3v, i o =0.5a v in =5v, i o =0.5a v in =6v, i o =0.5a 0.4 0.4 0.4 ? o 0.5a i o 0.5a i o 0.5a 0.6 1.2 0.8 0.8 0.8 i o 1a 210 210 310 315 v in =3.1 to 3.5v, i o =0.3a v in =3.1 to 3.5v, i o =0.3a v in =4.5 to 5.5v, i o =0.3a v in =6 to 7v, i o =0.3a 10 20 10 20 10 20 10 30 v in =3.3v, i o =0 to 1a v in =3.3v, i o =0 to 1a v in =5v, i o =0 to 1a v in =6v, i o =0 to 1a 0.3 0.3 0.3 0.5 v in =3.3v, i o =5ma, t j =0 to 100 cv in =3.3v, i o =5ma, t j =0 to 100 cv in =5v, i o =5ma, t j =0 to 100 cv in =6v, i o =5ma, t j =0 to 100 c 60 57 55 55 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 v in =6v, f=100 to 120h z 1.7 2.5 1.7 2.5 1.7 2.5 1.7 2.5 v in =3.3v, i o =0a v in =3.3v, i o =0a v in =5v, i o =0a v in =6v, i o =0a 1111 v in =3.3v, i o =0a, v c =0v v in =3.3v, i o =0a, v c =0v v in =5v, i o =0a, v c =0v v in =6v, i o =0a, v c =0v 1.2 1.2 1.2 1.2 v in =3.3v v in =3.3v v in =5v v in =6v 2.0 2.0 2.0 2.0 0.8 0.8 0.8 0.8 40 80 40 80 40 80 40 80 v c =2v 0 5 0 5 0 5 0 5 v c =0v *1: when mounted on glass-epoxy board 56.5 56.5 mm (copper laminate area 100%). *2: when mounted on glass-epoxy board 40 40 mm (copper laminate area 100%). *3: thermal protection circuits may be activated if the junction temperature exceeds 135 c. surface-mount, low current consumption, low dropout voltage si-3000lsa series
69 ics si-3000lsa series external dimensions (sop8) (unit : mm) 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 0 to 10 0.5 0.1 6.2 0.3 ?.05 0.12 m pin assignment q v in w nc (leave open) e v in r v c t gnd y gnd u v o i v o plastic mold package type flammability: ul94v-0 product mass: approx. 0.1g block diagram t ypical connection diagram reference data c o : output capacitor (22 f or larger) c in :inp ut capacitor (10 f) this capacitor is required in the case of an inductive input line or long wiring. t antalum capacitors are recommended for c in and c o , particularly at low temperatures. * leave pin 2 open. tsd + v in nc v in v c v o v o gnd gnd 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 + v in v in v c v o c in c o gnd + load pcb copper laminate area vs. junction to ambient air thermal resistance allowable output current (vs. v in -v out voltage difference) v in -i o max the inner frame stage, on which the ptr is mounted, is directly connected to the v out pin. therefore, enlarging the copper laminate area around the v out pin is really effective for a heat radiation. 150 140 130 120 110 100 90 80 70 100 1000 5000 copper laminate area (mm 2 ) pcb (glass-epoxy, 40 40mm) 160mm (40 40) mm j-a ( c/w) 1.2 1.0 0.8 0.6 0.4 0.2 0 1234 v in -v out voltage difference (v) t j = 120 c (20% derating of 150 c) i out ( max) (a) t a =25 c t a =85 c j-a =100 c/w
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