www.belling.com.cn v1.3 page1 bl317 b high current adjustable voltage regulator bl317b description theb l3 17b isa n ad ju stab le 3 te rmina lp ositive voltage regu la to r, de signed to sup p ly mo re th an 1.5ao fou tp utc urre nt with vo ltag ea d justab le fro m1.3v~ 37v. features outpu tcu rren tup to 1. 5a outpu t vo lta ge ad ju sta ble fro m1. 3v to 37v in te rn alsho rtc irc u itp rotec tion in te rn alo ve r te mp eratu re pro tec tio n safe a re ac o mpen sa tio nforou tpu t tran sistor applications p cmoth erboa rd lcdm on ito r graph icca rd dvdp la yer netwo rk in terfa ce ca rd /s witch teleco me qu ip men t p rin te r and o th erp erip hera leq u ip men t to-220 1 to-252 1 to-263 1 1 to-220f sot-223 1 1:adj; 2 :outp ut;3 : inp ut
www.belling.com.cn v1.3 page2 bl317 b ordering information device pac kag e s ss s hi ppi ng hi ppi ng hi ppi ng hi ppi ng b l3 17bt to220 tube b l3 17b f to220 f tube b l3 17by b to252 2500p cs/ ree l b l3 17by t to252 80pcs /tu be b l3 17b k to263 2 l reel b l3 17bs sot 223 reel block diagram absolute maximum ratings (ta =25 c ) * charac te ristic s ymb o l min . max. unit inp ut ou tpu tvo ltag e diffe re nce vin v ou t 40 v p owerdissipa tion p d in te rn al limite d opera ting te mpe ra tu re range top r 0 125 c storag e te mp erature t s 65 150 c le ad te mpe ra tu re (so ld erin g, 10 sec ) t l e a d 260 c *:a bso lu te ma ximu m ratin gsa re stre ssra ting so nl y and func tio na l d e vice op era tion is not imp lied .th ed e vic ec ou ld be da mag ed be yo nd abs o lu te ma x imu m ra ting s.
www.belling.com.cn v1.3 page3 bl317 b electrical characteristics v ivo=5v, 0 c www.belling.com.cn v1.3 page4 bl317 b thermal data p ara me te r s ymb o l rating units to252 112 to220 54 to220 f 44 to263 64 junction to a mb ie nt sot 223 ja 165 /w to252 12 to 22 0 5 to 22 0 f 5 to 26 3 5 junction to c ase sot223 jc 23 /w application circuit
www.belling.com.cn v1.3 page5 bl317 b characteristics curves 0 25 50 75 100 125 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 temperature output voltage deviation fig.1. load regulation vs temperature vi=15vvo=10v -50 -25 0 25 50 75 100 125 35 40 45 50 55 60 fig.2 adjustment current vs temperature adjustment current temperature 0 25 50 75 100 125 1.0 1.5 2.0 2.5 3.0 fig.3. dropout voltage vs input- output voltage difference temperature input-output voltage difference vo=100mv i l =1a i l =500ma i l =200ma i l =20ma i l =1.5a -50 -25 0 25 50 75 100 125 1.235 1.240 1.245 1.250 1.255 1.260 fig.4 reference voltage vs temperature reference voltage temperature
www.belling.com.cn v1.3 page6 bl317 b taping reel dimension taping dimension
www.belling.com.cn v1.3 page7 bl317 b package dimensions to- 220 unit: mm to- 252 unit: mm
www.belling.com.cn v1.3 page8 bl317 b to-263 unit: mm
www.belling.com.cn v1.3 page9 bl317 b to- 220f unit: mm
www.belling.com.cn v1.3 page10 bl317 b sot-223 unit: mm 0 10 6.50 0.20 3.00 0.10 2.30 4.60 0.10 0.25 0.30 0.05 0.71 0.01
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