20 unit v a w w c c c c/w c/w features ? compact full-mold package (equivalent to to220) ? output current: 2.0a ? low dropout voltage: v dif 1v (at i o =2.0a) ? 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-3002n series 3-terminal, full-mold, low dropout voltage dropper type si-3002n series symbol v in i o p d1 p d2 t j t op t stg r th(j-c) r th(j-a) ratings si-3052n SI-3092N si-3122n/3152n 25 30 35 2.0 *1 20(with infinite heatsink) 1.5(without heatsink, stand-alone operation) C 40 to +125 C 30 to +100 C 40 to +125 5.0 66.7(without heatsink, stand-alone operation) 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)
21 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 *3.4 electrical characteristics 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 *1: v in(max) and i o(max) are restricted by the relation p d(max) =(v in -v o ) ? i o =20(w). *2: refer to the dropout voltage.(refer to setting dc input voltage on page 7.) *3: 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 =1.0a. *4: 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-3002n series (unit:mm) unit v v v mv mv mv/ c db ma a (t a =25 c unless otherwise specified) ratings si-3052n SI-3092N si-3122n si-3152n min. typ. max. min. typ. max. min. typ. max. min. typ. max. 6 *2 15 *1 10 *2 25 *1 13 *2 27 *1 16 *2 27 *1 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 =1.0a v in =12v, i o =1.0a v in =15v, i o =1.0a v in =18v, i o =1.0a 0.5 0.5 0.5 0.5 i o 1.5a 1.0 1.0 1.0 1.0 i o 2.0a 10 30 18 48 24 64 30 90 v in =6 to 15v, i o =1.0a v in =10 to 20v, i o =1.0a v in =13 to 25v, i o =1.0a v in =16 to 25v, i o =1.0a 40 100 70 180 93 240 120 300 v in =8v, i o =0 to 2.0a v in =12v, i o =0 to 2.0a v in =15v, i o =0 to 2.0a v in =18v, i o =0 to 2.0a 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 2.1 2.1 2.1 2.1 v in =8v v in =12v v in =15v v in =18v
22 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-3002n * 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 rec- ommended 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-3002n series 25 20 15 10 5 0 power dissipation p d (w) 75 75 2mm (7.6 c/w) 100 100 2mm (5.2 c/w) 200 200 2mm (2.3 c/w) C 30 0 25 50 ambient temperature t a ( c) 75 100 infinite heatsink without heatsink with silicon grease heatsink: aluminum
23 typical characteristics i o vs. v dif characteristics temperature coefficient of output voltage(si-3052n) output voltage(si-3052n) output voltage(si-3122n) overcurrent protection characteristics(si-3052n) overcurrent protection characteristics(si-3122n) thermal protection characteristics(si-3052n) 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. 0 0.5 1 1.5 2 1.0 0.8 0.6 0.4 0.2 0 output current i o (a) dropout voltage v dif (v) C 40 0 C 20 40 20 80 60 140 100 120 5.02 5.00 4.98 ambient temperature t a ( c) output voltage v o (v) v in =8v l o =0a 01 3 25 48 67 6 5 4 3 2 1 0 input voltage v in (v) output voltage v o (v) l o =0a 0.5a 1a 1.5a 2a 0 2.0 1.0 3.0 4.0 6 5 4 3 2 1 0 output current i o (a) output voltage v o (v) 6v 8v 15v 12v 10v 02.0 1.0 3.0 4.0 output current i o ( a ) 14 12 10 8 6 4 2 0 output voltage v o (v) 27v 25v 22v 13v 18v 15v (t a =25 c) si-3002n series 0 5 10 15 20 14 12 10 8 6 4 2 0 input voltage v in (v) output voltage v o (v) l o =0a 0.5a 1a 1.5a 2a 0 20 100 60 140 180 case temperature t c ( c) v in =8v l o =10ma 6 5 4 3 2 1 0 output voltage v o (v)
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