ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 1 - description features the a 317b is an adjustable 3 - terminal pos it ive voltage regulator, designed to supply more than 1.5a of output current with voltage adjus table from 1.3v~37v. the a317 b is available in to220 - 3 , to - 252 and to - 263 p ackage s . ordering inf ormation package type part number to220 - 3 t3 a317bt3 u a317bt3v u to - 252 d a317bdr a317bdvr to - 263 s a317bs r a317bs vr note v: halogen free package r: tape & reel u: tube ait provides all rohs products ? output current up to 1.5a ? output voltage adjustable from 1.3v to 37v ? internal short circuit protection ? in ternal over temperature protect ion ? safe - area compensat ion for output transis tor ? available in to220 - 3 , to - 252 and to - 263 package s application ? pc motherboard ? lcd moni tor ? graphic card ? dvd p layer ? network interface card/switch ? telecom equipment ? printer and other peripheral equipment typical application *=c in is required if regulator is located near power supply filter. **=c o is needed for stability and it improves trans ient response. v out =v ref x (1+ r 2 / r 1 )+i adj xr 2 since i adj is controlled to less th a n 100 a , the error associated with this term is negligible in most applications.
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 2 - pin description top view top view top view pin # symbol function 1 adj adjustable 2 v out output 3 v in input
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 3 - absolute maximum ratings v in - v out , input - output voltage dif ference 40v p d , power dissipat ion internal limited t opr , operat ing temperature range 0 c ~125 c t s , stora ge temperature - 65 c ~150 c t lead , lead temperature ( solder ing, 10 sec) 260 c stress beyond above listed absolute maximum ratings may lead permanent damage to the device. these are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal data parameter symbol rating units junction - t o - ambient to - 252 ja 112 /w to - 220 54 to - 263 64 junction - to - case to - 252 jc 12 /w to - 220 5 to - 263 5
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 4 - electrical characteristics v i - v o =5v, 0 c ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 5 - typical performance characteristics 1. load regulation 2. adjustment current vs . temperature 3. dropout voltage vs . input - output voltage difference 4. reference voltage vs . temperature
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 6 - block diagram
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 7 - package information dimension in to220 - 3 (uni t: mm) dimension in to - 2 52 (unit: mm)
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 8 - dimension in to - 263 (unit: mm) symbol millimeters inches min max min max a 4.470 4.670 0.176 0.184 a1 0.000 0.150 0.000 0.006 b 1.170 1.370 0.046 0.054 b 0.710 0.910 0.028 0.036 b1 1. 170 1.370 0.046 0.054 c 0.310 0.530 0.012 0.021 c1 1.170 1.370 0.046 0.054 d 10.010 10.310 0.394 0.406 e 8.500 8.900 0.335 0.350 e 2.540 typ 0.100 typ e1 4.980 5.180 0.196 0.204 l 15.050 15.450 0.593 0.608 l 1 5.080 5.480 0.200 0.216 l 2 2.340 2.740 0.092 0.108 l3 1.300 1.700 0.051 0.067 v 5.600 ref 0.220 ref
ait semiconductor inc. www.ait - ic.com a317b bipolar linear regulator high c urrent adjustable voltage rev1. 2 - dec 201 5 released , mar 2017 updated - - 9 - important notice ait semiconductor inc. (ait) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without notice , and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. ait semiconductor inc. 's integrated circuit products are not designed, intended, authorized , or warranted to be suitable for use in life support applications, devices or systems or other critical applications. use of ait products in such applications is understood to be fully at the risk of the customer. as used herein may involve potential risk s of death, personal injury, or servere property, or environmental damage. in order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. ait semiconductor inc . assumes to no l iability to customer product design or application support. ait warrants the performance of its products of the specifications applicable at the time of sale.
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