ZXRE330 document number: ds36772 rev. 2 - 2 1 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 precision micropower shunt voltage references description the ZXRE330 is a low knee current 3.3v voltage reference. offering tight tolerances and sharp knee characteristics ? consuming only 1a when the 3. 3v reference voltage can no longer be maintained. excellent performance is maintained over the 1a to 5ma operating current range. the device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. it?s available in small outline sot23 and to92 packages this device offers a pin for pin com patible alternative to industry standard shunt voltage reference. features ? small packages: sot23 & to92 ? no output capacitor required ? output voltage tolerance ? ZXRE330e 2% at +25c ? ZXRE330a 0.5% at +25c ? low output noise ? (10hz to 10 khz).............. 55v rms ? wide operating current range 1a to 5ma ? extended temperature range -40c to +85c ? low temperature coefficient 20ppm/c (typ) ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) pin assignments ZXRE330xsa (sot23) ZXRE330xv (to92) applications ? battery powered equipment ? precision power supplies ? portable instrumentation ? portable communications devices ? notebook and palmtop computers ? data acquisition systems ? low current voltage clamps notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more in formation about diodes incorporated?s definitions of halogen- an d antimony-free, "green" and lead-free. 3. halogen- and antimony-free "green? products are defined as those which contain <900ppm br omine, <900ppm chlorine (<1500ppm t otal br + cl) and <1000ppm antimony compounds. * anod e cathode top v iew * pin 1 mu st be left floating or con nected to pin 2 3 1 2 (top view ) 1 anode 2 * + + + 3 cathode * pin 2 must be left floating or connected to pin 1
ZXRE330 document number: ds36772 rev. 2 - 2 2 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 typical applications circuit absolute maximum ratings (@t a = +25c, unless otherwise specified.) (voltages to gnd unless otherwise stated) parameter rating unit continuous reverse current 10 ma continuous forward current 10 ma operating junction temperature -40 to +150 c storage temperature -65 to +150 c note: 4. operation above the absolute maximum rating may cause device failure. operation at the absolute maximum rating, for ex tended periods, may reduce device reliability. unless otherwise stated voltage s specified are relative to the anode pin. package thermal data package ja p dis t amb = +25c, t j = +150c sot23 415c/w 300mw to92 180c/w 700mw recommended operating conditions (@t a = +25c, unless otherwise specified.) parameter min. max. units reverse current 0.002 5 ma operating ambient temperature range -40 +85 c
ZXRE330 document number: ds36772 rev. 2 - 2 3 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 electrical characteristics (@t a = +25c, unless otherwise specified.) symbol parameter conditions typ. e limits units t amb v ref reverse breakdown voltage i r = 100 a +25c 3.3 ? v reverse breakdown voltage tolerance i r = 100 a +25c ZXRE330a ? 16.5 mv ZXRE330e 66 -40 to +85c 99 i roff off state reverse current v = v ref *0.9 +25c 0.5 ? a -40 to +85c ? 1 ? v r / ? t average reverse breakdown voltage temperature coefficient i r = 5ma -40 to +85c 20 ? ? i r = 100a 15 150 ppm/c i r = 10a 15 ? ? ? v r reverse breakdown change with current 2ua ZXRE330 document number: ds36772 rev. 2 - 2 4 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 typical characteristics -50 -25 0 25 50 75 100 125 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 ir=100ua reverse voltage (v) ambient temperature ( o c) reverse breakdown voltage temperature coefficient -50 -25 0 25 50 75 100 125 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 ir=1ma reverse voltage (v) ambient temperature ( o c) reverse breakdown voltage temperature coefficient 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 1 2 3 4 5 6 7 8 9 10 t a =-40 o c t a =25 o c t a =85 o c reverse current (ua) reverse voltage (v) minimal operating current -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 t a =25 o c reverse current (ma) reverse voltage (v) reverse current vs. reverse voltage -50 -25 0 25 50 75 100 125 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 off-state reverse current (ua) ambient temperature ( o c) vr=3v off-state reverse current vs. temperature 10 100 1k 10k 0 1 2 3 4 5 noise( ? v/ ?? z) frequency (hz) i r =100ua t a =25 o c noise voltage vs. frequency
ZXRE330 document number: ds36772 rev. 2 - 2 5 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 start up characteristics ZXRE330 i r =100 a, no load capacitor i r =5ma, no load capacitor application information in a conventional shunt regulator application ( figure 1 ), an external series resistor (r s ) is connected between the supply voltage, v s , and the ZXRE330. r s determines the current that flows through the load (i l ) and the ZXRE330 (i r ). since load current and supply voltage may vary, r s should be small enough to supply at least the minimum acceptable i r to the ZXRE330 even when the supply voltage is at its minimum and the load current is at it s maximum value. when the supply voltage is at its maximum and i l is at its minimum, r s should be large enough so that the current flow ing through the ZXRE330 is less than 10 ma. r s is determined by the supply voltage, (v s ), the load and operating current, (i l and i r ), and the ZXRE330?s reverse breakdown voltage, v r . r l r s s i i v v r ? ? ? printed circuit board layout considerations ZXRE330 in the sot23 package have the die attached to pin 1, which results in an electrical contact between pin 2 and pin 3. therefore, pin 1 of the sot23 package must be left floating or connected to pin 2. ZXRE330 in the to92 package have the die attached to pin 2, wh ich results in an electrical contact between pin 2 and pin 1. therefore, pin 2 must be le ft floating or connected to pin1. r s v s i r + i l i r i l v r input output input output
ZXRE330 document number: ds36772 rev. 2 - 2 6 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 ? ZXRE330x xx -x packing package sa : s ot23 v : to92 7 : tape & reel a : ammo box a : 0.5% e : 2% reference voltage tolerance ordering information note: 5. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf marking information (1) sot23 part number package identification code ZXRE330asa-7 sot23 dc ZXRE330esa-7 sot23 dd (2) to92 ( top view ) re330 x y ww x x accuracy a : 0.5% e : 2% ww : week : 01 ~ 52; 52 y : year : 0 ~ 9 x x : internal code represents 52 and 53 week part number package code packaging 7? tape and reel ammo box quantity part number suffix quantity part number suffix ZXRE330asa-7 sa sot23 3000/tape & reel -7 na na ZXRE330esa-7 sa sot23 3000/tape & reel -7 na na ZXRE330av-a v to92 na na 2000/box a ZXRE330ev-a v to92 na na 2000/box a
ZXRE330 document number: ds36772 rev. 2 - 2 7 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 e l d a e e e j e c t i o n m a r k b 1 a m m o b u l k c e l 1 e j e c t i o n m a r k l 2 l 3 d 1 a 2 e 2 e 2 ? b package outline dimensions (all dimensions in mm.) please see ap02002 at http://ww w.diodes.com/datasheets/ap02002. pdf for latest version. sot23 to92 sot23 dim min max typ a 0.37 0.51 0.40 b 1.20 1.40 1.30 c 2.30 2.50 2.40 d 0.89 1.03 0.915 f 0.45 0.60 0.535 g 1.78 2.05 1.83 h 2.80 3.00 2.90 j 0.013 0.10 0.05 k 0.890 1.00 0.975 k1 0.903 1.10 1.025 l 0.45 0.61 0.55 l1 0.25 0.55 0.40 m 0.085 0.150 0.110 a ? 8 all dimensions in mm to92 dim min max typ a 3.45 3.66 - a2 1.22 1.37 - b - - 0.38 c - - 0.38 d 4.27 4.78 - d1 - - 3.87 e 4.32 4.83 - e - - 1.27 e2 2.40 2.90 - l 12.98 15.00 - l1 12.80 15.00 - l2 0.80 - - l3 2.00 3.00 - all dimensions in mm j k 1 k l 1 h l m a l l 7 a c b d a
ZXRE330 document number: ds36772 rev. 2 - 2 8 of 8 www.diodes.com january 2014 ? diodes incorporated ZXRE330 suggested pad layout please see ap02001 at http://www. diodes.com/datasheets/ap02001.pdf for the latest version. sot23 important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modi fications, enhancements, improv ements, corrections or ot her changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose pr oducts are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or a ccept any liability whatsoever in respec t of any products pu rchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or fore ign patents pending. product names and markings noted herein may also be covered by one or more un ited states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format rel eased by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical com ponents in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with in structions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support dev ice or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifica tions of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in su ch safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customer s must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2014, diodes incorporated www.diodes.com dimensions value (in mm) z 2.9 x 0.8 y 0.9 c 2.0 e 1.35 x e y c z
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