78 ics 1-1-4 linear regulator ics absolute maximum ratings unit v v v a w c c c c /w c /w ratings 10 10 v in 1.5 1.1 ?0 to +125 ?0 to +100 ?0 to +125 36 100 symbol v in v b v c i o p d *1 t j t op t stg (j-l) (j-a) *1 parameter dc input voltage dc bias 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) *1: when mounted on glass-epoxy board of 40 40mm (copper laminate area 100%). (t a =25 c) features low input voltage (1.3v) and low output voltage (1.0v) compact surface-mount package (sop8) low dropout voltage: v dif 0.3v (at i o = 1.5a) built-in overcurrent, input-overvoltage and thermal protection circuits built-in on/off function (off state circuit current: 1 a max.) compatible with low esr capacitors parameter input voltage bias voltage output current operating ambient temperature symbol v in v b i o t op ratings SI-3010LLSL 1.4 to 3.6 *1 3.3 to 5.5 0 to 1.5 *1 ?0 to +85 *1 unit v v a c *1: v in (max) and i o (max) are restricted by the relation p d = (v in - v o ) i o . recommended operating conditions unit v mv mv v a a mv/ c a v v a a parameter reference voltage line regulation load regulation dropout voltage quiescent circuit current circuit current at output off t emperature coefficient of output voltage overcurrent protection starting current *1 control voltage (output on) *2 control voltage (output off) v c control current (output on) t erminal control current (output off) symbol v adj conditions ? v oline conditions ? v oload conditions v dif conditions i q conditions i q (off) conditions ? v o / ? t a conditions i s1 conditions v c , ih v c , il i c , ih conditions i c , il conditions electrical characteristics (t a =25 c, v c =2v, v in =1.8v, v b =3.3v, v o =1.5v, unless otherwise specified) *1: i s1 is specified at the 5% drop point of output voltage v o on the condition that v in = overcurrent protection starting current, i o = 10 ma. *2: output is off when the output control terminal (v c terminal) is open. each input level is equivalent to ls-ttl level. therefore, the device can be driven directly by ls-ttls. ratings SI-3010LLSL min. typ. max. 0.980 1.000 1.020 i o =10ma 10 v in =1.7 to 2.5v, i o =10ma 30 v in =1.8v, i o =0 to 1.5a 0.3 i o =1.0a 500 800 i o =0a, r 2 =10k ? 1 v c =0v 0.2 t j =0 to 100 c 1.6 v in =1.8v, v b =3.3v 2 0.8 50 v c =2.7v 10 v c =0.4v surface-mount, low current consumption, low dropout voltage si-3000llsl series applications on-board local power supply for stabilization of the secondary-side output voltage of switching power supplies
79 ics si-3000llsl 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 o w adj e v b r v c t gnd y gnd u v in i v in plastic mold package type flammability: ul94v-0 product mass: approx. 0.1g t ypical connection diagram/block diagram reference data c in , c b : input and bias capacitors (approx. 0.1 to 10 f) required when the input line contains inductance or when the wiring is long. c o : output capacitor (47 f or larger) SI-3010LLSL is designed to use a low esr capacitor (such as a ceramic capacitor) for the output capacitor. the recom- mended esr value for an output capacitor is 500m ? or less (at room temperature). r1, r2: output voltage setting resistors the output voltage can be set by connecting r1 and r2 as shown at left. the recommended value for r2 is 10k ? . r1= (v o ? adj ) / (v adj /r2) c ss :s oft start capacitor the rising time of the output voltage can be set by connecting c ss between v out and adj. 10 100 1000 copper laminate area (mm 2 ) 0 0.2 0.4 0.6 0.8 1 1.2 pd (w) t a=25 c t a=50 c t a=80 c ref tsd drive v in c in v b v c on/off open:off low: off high: on v out c ss c o r1 r2 adj gnd 1 - + - + + - + + c b r1 7 8 3 2 6 5 4 ocp ocp(2) amp1 copper laminate area - power dissipation
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