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| zldo1117q document number: ds37075 rev. 1 - 2 1 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q automotive compliant 1a low dropout positive regulator with fixed and adjustable outputs description the zldo1117q is a low dropout positive adjustable or fixed - mode regulator with 1a output current capability. the zldo1117q has a 2% tolerance across the industrial temperature range and is guaranteed to have lower than 1.2v dropout at full lo ad current making it ideal to provide well - regulated outputs of 1.2v to 5.0v with input supply voltages up to 18v. the zldo1117q is ideally suited to provide well - regulated supplies for low voltage ic applications such as high - speed bus termination and low current 3.3v logic supply across the whole industrial temperature range. the zldo1117q has been qualified to aec - q100 grade 2 and is automotive compliant supporting ppaps. features ? 1.2v maximum dropout at full load current ? 2% tolerance over temperature , line and load variations ? fast transient response ? output current limiting ? built - in thermal shutdown ? good noise rejection ? suitable for u se with mlcc capacitors ? - 40 c to +105 c ambient temperature range ? available in to252 (dpak) and sot223 with Dgreen molding compound (no br, sb) ? lead - free finish; rohs compliant (notes 1 & 2) ? halogen and antimony free. green device (note 3) ? automotive compliant ? qualified to aec - q100 standards for high reliability ? ppap capable (note 4) pin assignments sot223 to252 ( dpak) notes: 1. eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. all applicable rohs exemptions applied. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of halogen - and antimony - free, "green" and lead - free. 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. 4. automotive products are aec - q100 qualified and are ppap capable. r efer to http://www.diodes.com/product_compliance_definitions.html . typical applications circuit 1a i/o C 1.8v core r egulator 3.3v 4.7f mlcc zldo1117q - 18 1.8v 4.7f mlcc v in v out adj/gnd v in v out adj/gnd tab is v out tab is v out (top view) (top view) 1 2 3 a d j ( g n d ) v o u t v i n t a b i s v o u t ( t o p v i e w ) green
zldo1117q document number: ds37075 rev. 1 - 2 2 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q pin description s pin name i/o pin number function a dj/ gnd i 1 a resistor divider from this pin to the v out pin and ground sets the output voltage (ground only for fixed - mode). v out o 2 the output of the regulator. a minimum of 4.7 f capacitor (0.05 esr 0.5) must be connected from this pin to ground to insure stability. for improved ac load response a larger output capacitor is recommended. v in i 3 the input pin of regulator. typically a large storage capacitor (0.05 esr 0.5) is connected from this pin to ground to ensure that the input voltage does not sag below the minimum dropout voltage during the load transient response. this pin must always be 1.3v higher than v out in order for the device to regulate properly. absolute maximum ratings symbol parameter rating unit v in input supply voltage (relative to ground) - 0.03 to +18 v t j junction temperature +150 c power dissipation see soa curve t st storage temperature - 65 to +150 c unless otherwise stated voltages specified are relative to the adj/gnd pin. safe operation area (soa) curve esd susceptibility symbol parameter rating unit hbm human body model 4 000 v mm machine model 400 v cdm charged device model 1000 v stresses greater than the 'absolute maximum ratings' specified above, may cause permanent damage to the device. these are str ess ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. semiconductor devices are esd sensitive and may be damaged by exposure to esd events. suitable esd precautions should be taken when handling and transporting these devices . 0 0.2 0.4 0.6 0.8 1 1.2 0 5 10 15 20 25 v in - v out (v) i load (a) soa zldo1117q document number: ds37075 rev. 1 - 2 3 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q recommended operating conditions symbol parameter min max unit v in input v oltage 2.7 (note 5) 18 v i o output c urrent 0.01 1 a t j operating junction temperature range (note s 6 , 7 ) - 40 +125 c t a operating ambient temperature range (note s 7 , 8 ) - 40 +105 c package thermal data thermal resistance package rating unit junction - to - ambient, ja sot223 (note 9 ) to252 (dpak) (note 10 ) 107 73 c/w junction - to - case, jc sot223 (note 9 ) to252 (dpak) (note 10 ) 16 12 c/w notes: 5 to e nsure correct operation without entering dropout v in must be 1.5v greater than output voltage . device will continue to operate below this minimum input voltage under dropout conditions . 6 . zldo1117q contains an internal thermal limiting circuit that is designed to protect the regulator in the event that the maximum junctio n temperature exceeded. when activated, typically at + 150c, the regulator output switches off and then back on as the die cools. 7. the maximum power dissipation is a function of t j(max) , ja and t a . the maximum allowable power dissipation at any ambient temperature is p d = (t j(max) C t a )/ ja . 8. zldo1117q was qualified to aec - q100 over the - 40 c to +105c ambient temperature range. 9. test condition for sot223 : t a = + 27c, no air flow, device mounted on 2x2 polyimide pcb, 2 oz copper, 5.6mmx5.6mm pad. 10 . test condition for to252 (dpak) : t a = + 27c, no air flow, device mounted on 2x2 polyimide pcb, 1 oz copper, 2cmx2cm pad. zldo1117q document number: ds37075 rev. 1 - 2 4 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q electrical characteristics ( t j = +25c, unless otherwise specified. ft = - 40 c t j + 125c pulse tested such that t a = t j ) parameter conditions t j min typ max unit reference voltage zldo1117q - adj (v in - v out ) = 2v, i o = 10ma 25 1.238 1.250 1.263 v v out + 1.4v < v in < 10v, 10ma < i o < 1a ft 1.225 1.275 output voltage zldo1117q - 1.2 i o = 10ma, v in = 3.2v 25 1.188 1.200 1.212 v 10ma < i o < 1a, 2.7v < v in < 12v ft 1.176 1.224 zldo1117q - 1.5 i o = 10ma, v in = 3.5v 25 1.485 1.500 1.515 v 0 < i o < 1a, 2.9v < v in < 12v ft 1.470 1.530 zldo1117q - 1.8 i o = 10ma, v in = 3.8v 25 1.782 1.800 1.818 v 0 < i o < 1a, 3.2v < v in < 12v ft 1.764 1.836 zldo1117q - 2.5 i o = 10ma, v in = 4.5v 25 2.475 2.500 2.525 v 0 < i o < 1a, 3.9v < v in < 12v ft 2.450 2.550 zldo1117q - 3.3 i o = 10ma, v in = 5.3v 25 3.267 3.300 3.333 v 0 < i o < 1a, 4.7v < v in < 12v ft 3.235 3.365 zldo1117q - 5.0 i o = 10ma, v in = 7v 25 4.95 5.000 5.05 v 0 < i o < 1a, 6.4v < v in < 12v ft 4.900 5.100 line regulation zldo1117q - adj zldo1117q - 1.2 i o = 10ma, v out + 1.5v < v in < 12v 25 0.1 % ft 0.2 zldo1117q - xx i o = 0ma, v out + 1.5v < v in < 12v 25 0.1 % ft 0.2 load regulation (notes 11 , 12 ) zldo1117q - adj v in = 3.3v, v adj = 0, 10ma < i o < 1a 25 0.2 % ft 0.4 zldo1117q - 1.2 v in = 2.7v, 10ma < i o < 1a 25 0.2 % ft 0.4 zldo1117q - 1.5 v in = 3v, 0 < i o < 1a 25 3 mv ft 6 zldo1117q - 1.8 v in = 3.3v, 0 < i o < 1a 25 4 mv ft 8 zldo1117q - 2.5 v in = 4v, 0 < i o < 1a 25 5 mv ft 10 zldo1117q - 3.3 v in = 4.8v, 0 < i o < 1a 25 6.6 mv ft 13 zldo1117q - 5.0 v in = 6.5v, 0 < i o < 1a 25 10 mv ft 20 dropout voltage (v in - v out ) zldo1117q - adj/1.2/ 1.5/1.8/2.5/3.3/5.0 i o = 1a, v out = 1%v out 25 1.11 1.2 v current limit zldo1117q - adj/1.2/ 1.5/1.8/2.5/3.3/5.0 (v in - v out ) = 5v 25 a ft 1. 1 minimum load current (note 13 ) zldo1117q - adj zldo1117q - 1.2 v in = <18v ft 2 5 ma quiescent c urrent zldo1117q - xx v in < 18v, i o = 0ma ft 4 10 ma gnd c urrent zldo1117q - adj zldo1117q - 1.2 v in = 7v ft 35 120 a thermal regulation 30ms pulse 25 0.1 %/w ripple rejection zldo1117q - xx v in = v out +3v f = 120hz, c out = 25f tantalum, i out = 100ma 25 60 80 db temperature stability i o = 10ma 0.5 % notes: 11 . see thermal regulation specifications for changes in output voltage due to heating effects. line and load regulation are meas ured at a constant junction temperature by low duty cycle pulse testing. load regulation is measured at the output lead = 1/18 fro m the package. 12 . line and load regulation are guaranteed up to the maximum power dissipation of 15w. power dissipation is determined by the di fference between input and output differential and the output current. guaranteed maximum power dissipation will not be available o ver the full input/output range. 13 . the minimum load current is defined as the minimum output current required to maintain voltage regulation. this output curren t can be made up of either load current itself and/or the current delivered to the output v oltage setting feedback resistors. zldo1117q document number: ds37075 rev. 1 - 2 5 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q typical characteristics output voltage variation vs. temperature line regulation vs. temperature load regulation vs. temperature drop - out voltage vs. current drop - out voltage vs. temperature adjust pin input current ( c ) -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature (c) ?vout (%) adjustable version i load = 10ma -0.01 0 0.01 0.02 0.03 0.04 0.05 0.06 -50 -25 0 25 50 75 100 125 temperature (c) line regulation (%) v out +1.5v zldo1117q document number: ds37075 rev. 1 - 2 7 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q application information the zldo1117q family of quasi - ldo regulators is easy to use. they are protected against short circuit and thermal overloads. thermal protection circuitry will shut down the regulator should the junction temperature exceed + 150c at the sense point. the zldo1117q is pin compatible with similar ?1117 regulators and offers extended temperature range and improved regulation specific ations. operation the zldo1117q develops a 1.25v reference voltage between the output and the adjust terminal. by placing a resistor between these two terminals, a constant current is caused to flow through r1 and down through r2. for fixed output variants resistors r1 and r2 are intern al. stability the zldo1117q requires an output capacitor as part of the device frequency compensation. as part of its improved performance over industry standard 1117 the zldo1117q is suitable for use with mlcc (multi layer ceramic chip) capacitors. a min imum of 4.7f cer amic x7r, 4.7f tantalum, or 47 f of aluminum electrolytic is required. the esr of the output capacitor should be less than 0.5. surface mount tantalum capacitors, which have very low esr, are available from several manufacturers. when us ing mlcc capacitors avoid the use of y5v dielectrics. load regulation for improved load regulation the zldo1117q - adj should have the upper feedback resistor, r 1 , connected as close as possible to v out and the lower resistor, r2, connected as close as pos sible to the load gnd return. this helps reduce any parasitic resistance in series with the load. thermal considerations zldo1117q series regulators have internal thermal limiting circuitry designed to protect the device during overload conditions. for con tinuous normal load conditions however, the maximum junction temperature rating of + 125c must not be exceeded. it is important to give careful consideration to all sources of thermal resistance from juncti on to ambient. for the sot223 and to252 (dpak) packages, which are designed to be surface mounted, additional heat sources mounted near the device must also be considered. heat sinking is accomplished using the heat spreading capability of the pcb and its copper traces. the ? jc (junction to tab) of the to252 (dpak) and sot223 are + 12c/w and + 16c/w respectively. thermal resistances from tab to ambient can be as low as + 30c/w. the total thermal resistance from junction to ambient can be as low as +42 to + 46c/w. this requires a reasonable sized pcb with at least one layer of copper to spread the heat across the board and couple it into the surrounding air. datasheet specifications using 2 oz copper and a 5mmx5mm pad with t a = + 27c, no air flow yielded ? ja (junction to tab) of + 73 c/w and + 107 c/w for to252 (dpak) and sot223 respectively. the thermal resistance for each application will be affected by thermal interactions with other components on the board. some experimentation will be necessary to determine the actual value. ripple rejection when using the zldo1117q adjustable device the adjust terminal can be bypassed to improve ripple rejection. when the adjust terminal is bypassed the required value of the output capacitor increases. the device will require an output capacitor of 22f tantalum or 150f aluminum e lectrolytic when the adjust pin is bypassed. normally, capacitor values on the order of 100f are used in the output of many regulators to ensure good load transient response with large load current changes. output capacitance can be increased without limi t and larger values of output capacitance further improve stability and transient response. the curves for ripple rejection were generated using an adjustable device with the adjust pin bypassed. these curves will hol d true for all values of output voltage . for proper bypassing, and ripple rejection approaching the values shown, the impedance of the adjust pin capacitor, at the ripple frequency, should be < r1. r1 is normally in the range of 100 to 200. the size of the required adjust pin capaci tor is a f unction of the input ripple frequency. at 120hz, with r1 = 100, the adjust pin capacitor should be >13f. at 10khz only 0.16f is neede d. for fixed voltage devices, and adjustable devices without an adjust pin capacitor, the output ripple will increase as the ratio of the output voltage to the reference voltage (v out /v ref ). for example, with the output voltage equal to 5v, the output ripple will be increased by the ratio of 5v/1.25v. it will increase by a factor of four. ripple rejection will be degraded b y 12db from the value shown on the curve. zldo1117q document number: ds37075 rev. 1 - 2 8 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q more application circuits figure 1 . basic adjustable regulator with 5v output using then the output voltage becomes: figure 2 . adjustable regulator with i adj errors because i adj typically is 55a, its effect is negligible in most applications. ~ 0.4% a. output capacitor selection is critical for regulator stability. larger c out values benefit the regulator by improving transient response and loop stability. b. c adj can be used to improve ripple rejection. if c adj is used, a c out that is larger in value than c adj must be used. c. c in is recommended if zldo1117q is not located near the power supply filter. d. an external diode is recommended to protect the regulator if the input instantaneously is shorted to gnd. e. this device is designed to be stable with tantalum and mlcc capacitors with an esr less than 0.47. v in v out v in v out c 2 1 0 0 m m i n v o u t a d j c 1 r 2 r 1 1 1 0 3 3 0 v i n v o u t = 5 v ? ? ? ? ? ? ? ? ? 1 r 2 r 1 25 . 1 v out v 0 . 5 110 330 1 25 . 1 v out ? ? ? ? ? ? ? ? ? ? 2 r i 1 r 2 r 1 25 . 1 v adj out ? ? ? ? ? ? ? ? ? ? ? v 02 . 5 330 10 55 110 330 1 25 . 1 v 6 out ? ? ? ? ? ? ? ? ? ? ? ? ? ? zldo1117q document number: ds37075 rev. 1 - 2 9 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q more application circuits (cont.) figure 3 . zldo1117q with extended output voltage figure 4 . zldo1117q with disable function v in v in v out v out v in = 11.5v zldo1117q document number: ds37075 rev. 1 - 2 10 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q ordering information part number output voltage packaging (note 1 4 ) package code packing: tape & reel qualification grade (note 1 5 ) quantity per reel tape width reel size part number suffix zldo1117qktc adjustable to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qgta sot223 g 1000 12 mm 7 ta automotive compliant zldo1117qk12tc 1.2v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg12ta sot223 g 1000 12 mm 7 ta automotive compliant zldo1117qk15tc 1.5v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg15ta sot223 g 1000 12 mm 7 ta automotive compliant zldo1117qk18tc 1.8v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg18ta sot223 g 1000 12 mm 7 ta automotive compliant ZLDO1117QK25TC 2.5v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg25ta sot223 g 1000 12 mm 7 ta automotive compliant zldo1117qk33tc 3.3v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg33ta sot223 g 1000 12 mm 7 ta automotive compliant zldo1117qk50tc 5.0v to252 (dpak) k 2500 16 mm 13 tc automotive compliant zldo1117qg50ta sot223 g 1000 12 mm 7 ta automotive compliant note s : 1 4 . pad layout as shown in diodes incorporated s package outline pdfs, which can be found on our website at http://www.diodes.com/package - outlines.html. 1 5 . zldo1117q has been qualified to aec - q100 grade 2 over a - 40 to +105c ambient temperature range and is classified as Dautomotive compliant supporting ppap documentation. see zldo1117 datasheet for commercial qualified versions. zldo1117q document number: ds37075 rev. 1 - 2 11 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q marking information (1) to252 (dpak) (2) sot223 (top view) (top view) zldo1117q document number: ds37075 rev. 1 - 2 12 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q package outline dimensions please see http://www.diodes.com/package - outlines.html for the latest version. (1) package type: sot223 (2) package type: to252 (dpak) sot223 dim min max typ a 1.55 1.65 1.60 a1 0.010 0.15 0.05 b 0.60 0.80 0.70 b1 2.90 3.10 3.00 c 0.20 0.30 0.25 d 6.45 6.55 6.50 e 3.45 3.55 3.50 e1 6.90 7.10 7.00 e - - 4.60 e1 - - 2.30 l 0.85 1.05 0.95 q 0.84 0.94 0.89 all dimensions in mm dim min max typ a 2.19 2.39 2.29 a1 0.00 0.13 0.08 a2 0.97 1.17 1.07 b 0.64 0.88 0.783 b2 0.76 1.14 0.95 b3 5.21 5.46 5.33 c 0.45 0.58 0.531 d 6.00 6.20 6.10 d1 5.21 - - e - - 2.286 e 6.45 6.70 6.58 e1 4.32 - - h 9.40 10.41 9.91 l 1.40 1.78 1.59 l3 0.88 1.27 1.08 l4 0.64 1.02 0.83 a 0 10 - all dimensions in mm a1 a 7 7 d b e e1 b1 c e1 l 0 -10 q e 0.25 seating plane gauge plane b3 e l3 d l4 b2(2x) b(3x) e c a 7 1 h seating plane a1 gauge plane a 0.508 l 2.74ref d1 a2 e1 zldo1117q document number: ds37075 rev. 1 - 2 13 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q suggested pad layout please see http://www.diodes.com/package - outlines.html for the latest version. (1) package type: sot223 (2) package type: to252 (dpak) dimensions value (in mm) c 2.30 c1 6.40 x 1.20 x1 3.30 y 1.60 y1 1.60 y2 8.00 dimensions value (in mm) c 4.572 x 1.060 x1 5.632 y 2.600 y1 5.700 y2 10.700 x1 y1 y x c c1 y2 x1 x y2 y1 y c zldo1117q document number: ds37075 rev. 1 - 2 14 of 14 www.diodes.com april 2016 ? diodes incorporated zldo1117q 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 reserve the right to make modifications, enhancements, improvements, corrections or other c hanges without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diod es incorporated website, harmless against all damages. diodes incorporated do es not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized a pplication. products described herein may be covered by one or more united states, international or foreign patents pending. product nam es and markings noted herein may also be covered by one or more united states, international or foreign trademarks. t his document is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorporated. life support diodes incorporated products ar e specifically not authorized for use as critical components in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems 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 properly used in accordance with instructions for use provided i n 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 device or system whose failure to perform can be reasonably expe cted to cause the failure of the life support device or to affect its safety or effectiven ess. customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related re quirements concerning their products and any use of diodes incorporated products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 6 , diodes incorporated www.diodes.com |
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