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| io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 1 http://www.sanken - ele.co.jp general descriptions NR301E is the low saturation voltage type io=1.0a linear regulator ic built in the exposed soic8 package. the out put voltage vo is adjustable by the external resistor. in this ic, start - up and shut - down are possible by the external signal input. over - current protection an d thermal protection are built in as a protection function. a low - esr capacitor like a ceramics capacitor can be used for the output capacitor. featu res & benefit s ? the output voltage is adjustable by the external resistor. ? start - up and shut - down are possible when a vc terminal is used .( external signal input) ? c eramics capacitor is possible to use as the output capacitor . ? protection functions over current protection (ocp) thermal protection with temperature hysteresis . (tsd) package package name exposed soic 8 exposed pad is a radiator on back - side of package. s urface mount 8 - pin package exposed soic 8 (hsop8) electrical characteristics ? input voltage: vin =2.7v to 27v recommeded ? reference voltage: v fb = 1.0v 1.5 % ? output current: i o = 1.0a ? difference in input and output: v dif = typ. 0.6v application s for local regulator circuit lcd - tv/stb/dvd/blu - ray audio/pc usb output protection typical application circuit arial 10pt k c in 1 f 50v, c out 1 f 50v, r1 39k +1k , r2 10k pin assign
io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 2 http://www.sanken - ele.co.jp series line - up products name vin(max) io(max) vc(on/off) v dif NR301E 30v 1a 2v/0.6v 0.6v@1a,0.3v@0.5a absolute maximum ratings parameter terminal symbol ratings units conditions dc input voltage 4 ? 8 v in 30 v vc terminal voltage 4 ? 5 v c 30 v vc Q vin adj terminal voltage 4 ? 3 v adj 5 .0 v power dissipation (1) D p d 1. 76 w glass - epoxy board mounting in a 3030mm. (copper area in a 2525mm) thermal resistance(junction to ambient air) D j - a 7 1 c/w thermal resistance junction to pin no.4 D j - l 26 c/w junction temperature D t j(max) ? 4 0 + 1 2 5 c this product builds in an thermal protection circuit. when junction - temperature is more than 135 ,thermal protection often works. strage temperature D t stg ? 40 + 125 c (1) limited by thermal shutdown. (2) the temperature detection of thermal shutdown is about 155 c (typical). recommended operating conditions parameter terminal symbol ratings units conditions m in max input voltage range (1) 4 ? ( ) 4 ? o 0 1 .0 a output voltage range D o 1.1 16 v refer to page7 ambient o perating temperature D op(a) - 30 85 c junction operating temperature D op(j) - 3 0 100 c (1) vin and io are restricted by the use condition because there are relations of pd= ( vin - vo) io. * the condition when there is no special mention : ta=25 c * the condition when there is no special mention : ta=25 c io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 3 http://www.sanken - ele.co.jp electrical characteristics the condition when there is no special mention : vin v o +1v v o 5v (typ) r 1 =10k , r2=39k+1k ta= 25 c parameter symbol ratings units conditions m in t yp m ax reference voltage v adj 0.98 5 1.00 1.0 15 v io=10ma line regulation v line D v load D v dif D D 0.6 0. 8 v io=1a supply current (non - operating ) i q 0.5 0.9 1 . 6 m a io=0ma c = 2v shutdown supply current i q (off) D c =0 v output voltage temperature coefficient vo/ta D D D D output voltage control terminal voltage *2 vo :on v c (h) 2 .0 D D c(l) D D c(ih) D c =2.0v vo:off v c(il) - 2 0 0.1 ua v c =0v over current protection threshold *3 i s1 1.1 D D D c D thermal shutdown restart hysteresis of temperature tsd (hys) D D D * 2 the internal circuit of the vc - terminal is high impedance, to avoid a un - stable condition, the vc - terminal must surely pull - up or pull - down. because vc - terminal input level is equal to the ls - ttl, therefore direct - drive is possible. *3 is1 is prescribed that the output voltage vo descend to - 5%. io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 4 http://www.sanken - ele.co.jp typical performance characteristics vout 5v Or .(r2=10k) ta=25 vo=2.5v 3.3v 5v 9v 15v (2) input voltage vs. output voltage v in - vout 0 2 4 6 8 input voltage v 6 4 2 vout v i o= 0a 0.5a 1a iout=0a (1) quiescent current (5) load regulation (4) line regulation (6) over current protection output current a dropout voltage v output current a output current a vout v vout v vout v input voltage v input voltage v (3) output current vs. dropout voltage quiescent current ma vo=2.5v 3.3v 5v 9v 15v ocp iout - vout 4.94 4.95 4.96 4.97 4.98 4.99 5 5.01 5.02 5.03 5.04 0 0.2 0.4 0.6 0.8 1 v load vin=10v 6v 0 1 2 3 4 5 6 0 0.5 1 1.5 2 vin=6v 10v 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 0 5 10 15 20 25 30 vin - i 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 0.2 0.4 0.6 0.8 1 iout - vdif 4.9 4.92 4.94 4.96 4.98 5 5.02 5.04 5.06 5.08 5.1 0 5 10 15 20 v line iout=0a io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 5 http://www.sanken - ele.co.jp ( (7) on/off control vc terminal voltage v vout v vout v iout=0a j unction temperature 0 1 2 3 4 5 6 0 0.5 1 1.5 2 2.5 3 vc - vo 0 1 2 3 4 5 6 0 20 40 60 80 100 120 140 160 180 tsd io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 6 http://www.sanken - ele.co.jp functional block diagram pin a s signments & functions pin assign & function pin no. symbol description 1 v o output voltage 2 adj output voltage adjustment 3 gnd ground 4 nc no connection 5 v c output on/off control 6 nc no connection 7 8 vin input voltage * back side fin(exposed thermal pad): sub - straight (ground) vo - + 2 v / 0 . 6 v v c 5 v c 8 v i n o c p 1 v o u t o v p - + 1 . 1 v a d j t s d - + h y s 5 0 1 5 5 g n d n c n c n c 4 7 6 n r 3 0 1 e b l o c k d i a g r a m 3 b g r e f d r v a d j o t a - + v a d j 2 io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 7 http://www.sanken - ele.co.jp example application circuit a precaution in design in case of the vo=5v and vin =6v. c in c out 1uf/16v r1 r2 it is controlled so that adj - gnd voltage may be 1v (typ). r1 39k+1k( a resistor for the fine tuning ), r2 10k r3 about handling of the vc terminal function . case1 if you don't use vc function ( vo normally on ), vc must connect to vin directly with r3= 0. case2 if you use vc function (vo on/off) by ttl - logic signal, r3 is unnecessary. input a ttl - logic signal to vc directly. case3 if you use vc function (vo on/off) by the condition of open - collector or open - drain, you must connect pull - up resistor r3 between vin and vc. d1 diode for the reverse bias protection. when relations between the input voltage and the output voltage are reversed (vi n io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 9 http://www.sanken - ele.co.jp package outline (exposed soic8) notes: 1) dimension is in millimeters (mm). 2) drawing is not to scale. symbol demension min typ max a1 1 2 3 4 8 7 6 5 io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 10 http://www.sanken - ele.co.jp marking of NR301E laser marking , specifications are based on the following. *1. product number *2. lot number (three digit) 1st letter : the last digit of the year 2nd letter : month january to september : 1 to 9 october : o november : n december : d 3rd letter : manufacturing week first week to 5th week : 1 to 5 *3. control number (four digit) NR301E *1 sk *2 *3 m arking specification io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 11 http://www.sanken - ele.co.jp o perating precautions r eliability can be affected adversely by improper storage environment s and handling methods . p lease observe the following cautions. heat dissipation and reliability thermal performance of the surface mo unt package ic depends on th e material and area size of pcb a nd its copper plane. design thermal condition with sufficient margin parallel operation the parallel operation to increase the current is not available. thermal shut down the NR301E has a thermal protection circuit. this circuit protects the ic from the heat generation by the over load. this circuit cannot guarantee the long - term reliability against the continuously over load statu s. cautions for storage ? ensure that storage conditions comply with the standard temperature (5 to 35 c ) and the standard relative humidity (around 40 to 75%) ; avoid storage locations that experience extreme changes in temperature or humidity. ? avoid locations where dust or harmful gases are present and avoid direct sunlight. ? reinspect for rust on leads and solderability of products that have been stored for a lo ng time. cautions for testing and handling ? when tests are carried out during inspection testing and other standard test periods, protect the products from power surges from the testing products, shorts between the product pins, and wrong connections. in a ddition, avoid tests exceeded ratings soldering when soldering the products, please be sure to minimize the working time, within the following limits. ? reflow preheat ; 180 c / 9 0 30 s heat ; 250 c / 10 1s (260 c peak ,2times) ? soldering iron ; 38010c / 3 .5 0.5 s ( 1time ) electrostatic discharge ? when handling the products, the operator must be grounded. grounded wrist straps worn should have at least 1m of resistance from the operator to ground to prevent shock hazard, and it should be placed near the ope rator. ? workbenches where the products are handled should be grounded and be provided with conductive table and floor mats. ? when using measuring equipment such as a curve tracer, the equipment should be grounded. ? when soldering the products, the head of a soldering irons or the solder bath must be grounded in order to prevent leak voltages generated by them from being applied to the products. ? the products should always be stored and transported in sanken shipping containers or conductive containers, or be wrapped in aluminum foil. io=1a,vin =27v, esoic8 linear regulator ic NR301E sanken electric co., ltd. sep / 19 /201 3 rev. 1 . 0 12 http://www.sanken - ele.co.jp i m portants notes ? the contents in this document are subject to changes, for improvement and other purposes, without notice. make sure that this is the latest revision of the document before use. ? application and operation examples described in this document are quoted for the sole purpose of reference for the use of the products herein and sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of sanken or any third party which may result from its use. ? although sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a certain rate is inevitable. users of sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. ? sanken products listed in this document are designed and intended for the use as components in general purpose electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). when considering the use of sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), please contact your nearest sanken sales repr esentative to discuss, prior to the use of the products herein. the use of sanken products without the written consent of sanken in the applications where extremely high reliability is required (aerospace equipment, nuclear power control systems, life supp ort systems, etc.) is strictly prohibited. ? in the case that you use sanken semiconductor products or design your products by using sanken semiconductor products , the reliability largely depends on the degree of derating to be made to the rated values. dera ting may be interpreted as a case that an operation range is set by derating the load from each rated value or surge voltage or noise is considered for derating in order to assure or improve the reliability. in general, derating factors include electric st resses such as electric voltage, electric current, electric power etc., environmental stresses such as ambient temperature, humidity etc. and thermal stress caused due to self - heating of semiconductor products . for these stresses, instantaneous values, max imum values and minimum values must be taken into consideration. in addition, it should be noted that since power devices or ics including power devices have large self - heating value, the degree of derating of junction temperature affects the reliability significantly. ? when using the products specified herein by either (i) combining other products or materials therewith or (ii) physically, chemically or otherwise processing or treating the products, please duly consider all possible risks that may result from all such uses in advance and proceed therewith at your own responsibility. ? anti radioactive ray design is not considered for the products listed herein. ? sanken assumes no responsibility for any troubles, such as dropping products caused during transpo rtation out of sanken s distribution network . ? the contents in this document must not be transcribed or copied without sankens written consent. |
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