8 parameter dc input voltage dc output current power dissipation junction temperature ambient operating temperature storage temperature thermal resistance (junction to case) thermal resistance (junction to ambient air) symbol v in i o p d1 p d2 t j t op t stg r th(j-c) r th(j-a) features ? compact full-mold package (equivalent to to220) ? output current: 1.0a ? low dropout voltage: v dif 1v (at i o =1.0a) ? built-in foldback overcurrent, overvoltage, thermal protection circuits applications ? for stabilization of the secondary stage of switching power supplies ? electronic equipment absolute maximum ratings (t a =25 c) si-3000n series 3-terminal, full-mold, low dropout voltage dropper type si-3000n series ratings si-3050n SI-3090N/3120n si-3150n 25 30 35 1.0 *2 14(with infinite heatsink) 1.5(without heatsink, stand-alone operation) C 40 to +125 C 30 to +100 C 40 to +125 7.0 66.7(without heatsink, stand-alone operation) unit v a w w c c c c/w c/w
9 parameter input voltage output voltage dropout voltage line regulation load regulation temperature coefficient of output voltage ripple rejection quiescent circuit current overcurrent protection starting current *4,5 electrical characteristics unit v v v mv mv mv/ c db ma a si-3000n *1 si-3000na *1: "a" may be indicated to the right of the sanken logo. *2: v in(max) and i o(max) are restricted by the relation p d(max) =(v in -v o ) ? i o =14(w). *3: refer to the dropout voltage.(refer to setting dc input voltage on page 7.) *4: i s 1 is specified at C 5(%) drop point of output voltage v o on the condition that v in =v o +3v, i o =0.5a. *5: a foldback type overcurrent protection circuit is built into the ic regulator. therefore, avoid using it for the following applications as it may cause starting errors: (1) constant current load (2) plus/minus power (3) series power (4) v o adjustment by raising ground voltage external dimensions a. part number b. lot number pin arrangement q gnd w v o e v in plastic mold package type flammability: ul94v-0 weight: approx. 2.3g 0.95 0.15 0.85 +0.2 10 0.2 4.2 0.2 2.8 0.2 2.6 0.15 qwe 3.2 0.2 2 max. 0.5 16.9 0.3 7.9 0.2 4 0.2 (13.5) 0.45 +0.2 C 0.1 p3.4 0.1 2=6.8 C 0.1 a b si-3000n series (unit: mm) (t a =25 c unless otherwise specified) ratings si-3050n SI-3090N si-3120n si-3150n min. typ. max. min. typ. max. min. typ. max. min. typ. max. 6 *3 15 *2 10 *3 20 *2 13 *3 25 *2 16 *3 27 *2 4.80 5.00 5.20 8.64 9.00 9.36 11.52 12.00 12.48 14.40 15.00 15.60 4.90 5.00 5.10 8.82 9.00 9.18 11.76 12.00 12.24 14.70 15.00 15.30 v in =8v, i o =0.5a v in =12v, i o =0.5a v in =15v, i o =0.5a v in =18v, i o =0.5a 0.5 0.5 0.5 0.5 i o 0.5a 1.0 1.0 1.0 1.0 i o 1.0a 10 30 18 48 24 64 30 90 v in =6 to 15v, i o =0.5a v in =10 to 20v, i o =0.5a v in =13 to 25v, i o =0.5a v in =16 to 27v, i o =0.5a 40 100 70 180 93 240 120 300 v in =8v, i o =0 to 1.0a v in =12v, i o =0 to 1.0a v in =15v, i o =0 to 1.0a v in =18v, i o =0 to 1.0a 0.5 1.0 1.5 1.5 v in =8v, i o =5ma, t j =0 to 100 cv in =12v, i o =5ma, t j =0 to 100 cv in =15v, i o =5ma, t j =0 to 100 cv in =18v, i o =5ma, t j =0 to 100 c 54 54 54 54 v in =8v, f=100 to 120h z v in =12v, f=100 to 120h z v in =15v, f=100 to 120h z v in =18v, f=100 to 120h z 310310310310 v in =8v, i o =0a v in =12v, i o =0a v in =15v, i o =0a v in =18v, i o =0a 1.2 1.2 1.2 1.2 v in =8v v in =12v v in =15v v in =18v symbol v in v o conditions v dif conditions conditions ? v oline conditions ? v oload conditions ? v o / ? t a conditions r rej conditions i q conditions i s1 conditions
10 block diagram standard external circuit 3 reg. protection amp. v ref drive mic 1 2 t r1 d 1 c 0 c 2 c 1 dc input dc output v in v o gnd gnd 32 1 si-3000n * 1 * 2 ++ t a -p d characteristics p d =i o ? [v in (mean) C v o ] c 0 : output capacitor (47 to 100 f) *1 c 1 : oscillation prevention capacitor c 2 (c 1 : approx. 47 f, c 2 : 0.33 f) these capacitors are required if the input line is inductive and in the case of long wiring. tantalum capacitors are recommended for c 1 and c 0 , particularly at low temperatures. *2 d 1 : protection diode this diode is required for protection against reverse biasing of the input and output. sanken eu2z is recommended. si-3000n series 15 10 5 0 C 30 02550 ambient temperature t a ( c) power dissipation p d (w) 75 100 200 200 2mm (2.3 c/w) 100 100 2mm (5.2 c/w) 75 75 2mm (7.6 c/w) infinite heatsink without heatsink with silicon grease heatsink: aluminum
11 typical characteristics i o vs. v dif characteristics temperature coefficient of output voltage(si-3050n) output voltage(si-3050n) output voltage(si-3120n) overcurrent protection characteristics(si-3050n) overcurrent protection characteristics(si-3120n) thermal protection characteristics(si-3050n) output current i o (a) dropout voltage v dif (v) 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1.0 ambient temperature t a ( c) output voltage v o (v) 5.06 5.04 5.02 5.00 4.98 4.96 4.94 C 40 C 20 0 20 40 60 80 100 120 140 v in =8v i o =0a v o =5v output voltage v o (v) 0.25a 01234 input voltage v in (v) 56 i o = 0a 6 5 4 3 2 1 0 0.5a 0.75a 1.0a case temperature t c ( c) output voltage v o (v) 6 5 4 3 2 1 0 0 20 60 100 140 180 v in =8v i o =10ma output current i o (a) 6 5 4 3 2 1 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 v in =6v 8v 10v 12v 15v output voltage v o (v) output current i o (a) output voltage v o (v) 14 12 10 8 6 4 2 0 0.5 0 1.0 1.5 2.0 v in =13v 15v 22v 18v note on thermal protection: the thermal protection circuit is intended for protection against heat during instantaneous short-circuiting. its operation is not guaran- teed for continuous heating condition such as short-circuiting over extended periods of time. (t a =25 c) si-3000n series input voltage v in (v) output voltage v o (v) 14 12 10 8 6 4 2 0 0246810121416 i o =0a =0.5a =1.5a
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