? 2010 semtech corporation powerfmanagement 1 sc4213h veryflowfinputf/veryflowfdropout 0.5fampfregulatorfwithfenable features input voltage as low as 1.4v 75mv dropout @ 0.5a adjustable output from 0.5v over current and over temperature protection enable pin 10a quiescent current in shutdown full industrial temperature range fully weee and halogen free. rohs compliant applications telecom/networking cards motherboards/peripheral cards industrial applications wireless infrastructure set top boxes medical equipment notebook computers battery powered systems ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? description the sc4213h is a high performance positive voltage regu - lator designed for use in applications requiring very low input voltage and very low dropout voltage at up to 0.5 amperes. it operates with a vin as low as 1.4v. the sc4213h features ultra low dropout, ideal for applications where vout is very close to vin. additionally, the sc4213h has an enable pin to further reduce power dissipation while shut- down. the sc4213h provides excellent regulation over variations in line, load and temperature. the sc4213h is available in an soic-8 package. the output voltage can be set via an external divider as shown in the typical application circuit. typicalfapplicationfcircuit july 27, 2010 nc nc vin en nc vo fb gnd u1 sc4213h vin c1 c2 r1 r2 enable v r2 r2) 0.5(r1 = vo +
?f2010fsemtechfcorporation sc4213h 2 pinfconfguration markingfinformation orderingfinformation device package sc4213hstrt (1)(2) soic-8 SC4213HEVB evaluation board notes: (1) available in tape and reel only. a reel contains 2,500 devices. (2) available in lead-free packaging only. weee compliant and halogen free. this component and all homogenous sub- components are rohs compliant. 3 h
?f2010fsemtechfcorporation sc4213h 3 exceeding the above specifcations may result in permanent damage to the device or device malfunction. operation outside of the parameters specifed in the electrical characteristics section is not recommended. notes: (1) tested according to jedec standard jesd22-a114-b. (2) calculated from package in still air, mounted to 3 x 4.5, 4 layer fr4 pcb with thermal vias under the exposed pad per jesd51 standards. absolutefmaximumfratingsf vin, en, vo, fb to gnd (v) . . . . . . . . . . . . . . . . . . -0.3 to +7.0 power dissipation . . . . . . . . . . . . . . . . . . . . . internally limited esd protection level (1) (kv) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 recommendedfoperatingfconditions vin (v) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 < v in < 6.0 ambient temperature range (c) . . . . . . . . . -40 < t a < +105 junction temperature range (c) . . . . . . . . . -40 < t j < +125 maximum output current (a) . . . . . . . . . . . . . . . . . . . . . . . . . 1 thermalfinformation thermal resistance, junction to ambient (2) (c/w) . . . . . 105 thermal resistance, junction to case (2) (c/w) . . . . . . . . 47 maximum junction temperature (c) . . . . . . . . . . . . . . +150 storage temperature range (c) . . . . . . . . . . . . -65 to +150 peak ir refow temperature (10s to 30s) (c) . . . . . . +260 unless specifed: v en = v in , v fb = v o , v in = 1.40v to 6.0v, i o = 10a to 0.5a, t a = 25 c. values in bold apply over the full operating temperature range. parameter symbol conditions min typ max units vin quiescent current i q v in = 3.3v, i o = 0a 3 ma v in = 6.0v, v en =0v 10 50 a vo output voltage (1) (fixed voltage, v fb = v o ) v o v in = v o + 0.5v, i o = 10ma -2% v o +2% v v in = 1.8v, i o = 0.5a, 0c t j = t a 85c 1.40v v in 6.0v, i o = 10ma -3% +3% line regulation (1) reg (line) i o =10ma 0.2 0.4 %/v load regulation (1) reg (load) i o =10ma to 0.5a 0.5 1.5 % minimum load current (3) i o 10 a current limit i cl 1.5 a electricalfcharacteristics
?f2010fsemtechfcorporation sc4213h 4 parameter symbol conditions min typ max units dropout voltage (1)(2) v dropout i o =0.5a 1.4v v in <1.6v 75 150 mv 1.6v v in 6.0v 125 feedback reference voltage (1) v ref v in = 3.3v, v fb = v out , i o =10ma 0.495 0.5 0.505 v 0.490 0.510 feedback pin current i adj v fb = v ref 80 200 na en enable pin current i en v en = 0v, v in =3.3v 1.5 5 a enable pin threshold v ih v in =3.3v 1.6 v v il 0.4 overftemperaturefprotection high trip level t hi 160 o c hysteresis t hyst 10 o c electricalfcharacteristicsf(continued) notes: (1) low duty cycle pulse testing with kelvin connections required. (2) v do = v in -v o when v o decreases by 1.5% of its nominal output voltage with v in = v o +0.8v. (3) required to maintain regulation. voltage set resistors r1 and r2 are usually utilized to meet this requirement.
?f2010fsemtechfcorporation 0 . 50 0 . 25 sc4213h typical dropout voltage at vout = 1.6v 0.00 0.03 0.05 0.08 0.10 0.0 0.1 0.2 0.3 0.4 0.5 iout (a) dropout voltage (v) 125 o c 25 o c - 40 o c sc4213h typical dropout voltage at vout = 3.3v 0.00 0.02 0.04 0.06 0.08 0.0 0.1 0.3 0.4 0.5 iout (a) dropout voltage (v) 125 o c 25 o c - 40 o c sc4213h typical dropout voltage at vout = 1.4v 0.00 0.03 0.05 0.08 0.10 0.0 0.1 0.2 0.3 0.4 0.5 iout (a) dropout voltage (v) 125 o c 25 o c -40 o c sc4213h 5
?f2010fsemtechfcorporation sc4213h 6 pinfdescriptionsf pinf# pinfname pinffunction 2 en enable input. pulling this pin below 0.4v turns the regulator of, reducing the quiescent current to a fraction of its operating value. the device will be enabled if this pin is left open. connect to vin if not being used. 3 vin input voltage. for regulation at full load, the input to this pin must be between (vo+ 0.5v) and 6.0v. minimum vin = 1.4v. a large bulk capacitance should be placed close to this pin to ensure that the input supply does not sag below 1.4v. also a minimum of 4.7f ceramic capacitor should be placed directly at this pin. 6 vo the pin is the power output of the device. a minimum of 10uf capacitor should be placed directly at this pin. 7 fb tied to external feedback resistors to program the output voltage. the output voltage will be determined by the resistor ratio (see application circuits on page 1) 8 gnd reference ground. the gnd pin and the exposed die pad must be connected together at the ic pin. 1, 4, 5 nc no connection. thermal pad pad for heatsinking purposes. connect to ground plane using multiple vias. blockfdiagram
?f2010fsemtechfcorporation power derating curve 0 0.5 1 1.5 0 25 50 75 100 125 ambient temperature t a ( o c) allowable power dissipation p d (w) r th(ja) =105 o c/w sc4213h 7 applicationsfinformationf(continued) introduction the sc4213h is intended for applications where high current capability and very low dropout voltage are required. it provides a very simple, low cost solution that uses very little pcb real estate. additional features include an enable pin to allow for a very low power consumption standby mode, and a fully adjustable output. componentfselection inputfcapacitor: a large bulk capacitance 4.7f (output load) should be closely placed to the input supply pin of the sc4213h to ensure that vin does not sag below 1.4v. also a minimum of 4.7f ceramic capacitor is recom - mended to be placed directly next to the vin pin. this allows for the device being some distance from any bulk capacitance on the rail. additionally, input droop due to load transients is reduced, improving load transient response. additional capacitance may be added if required by the application. outputfcapacitor: a minimum bulk capacitance of 4.7 f , along with a 0.1f ceramic decoupling capacitor is recom - mended. increasing the bulk capacitance will improve the overall transient response. the use of multiple lower value ceramic capacitors in parallel to achieve the desired bulk capacitance will not cause stability issues. although designed for use with ceramic output capacitors, the sc4213h is extremely tolerant of output capacitor esr values and thus will also work comfortably with tantalum output capacitors. noisefimmunity: in very electrically noisy environments, it is recommended that 0.1f ceramic capacitors be placed from vin to gnd and vo to gnd as close to the device pins as possible. externalffvoltageffselectionffresistors: the use of 1% resistors, and designing for a current fow 10a is rec - ommended to ensure a well regulated output (thus r2 50k). a suitable value for r2 can be chosen in the range of 1k to 50k. r1 can then be calculated from: enable: pulling this pin below 0.4v turns the regulator of, reducing the quiescent current to a fraction of its operat - ing value. a pull up resistor up to 400kohms should be connected from this pin to the vin pin in applications where supply voltages of vin < 1.9v are required. for applications with higher voltages than 1.9v, the en pin can be left open or connected to vin. thermalfconsiderations the power dissipation in the sc4213h is given by: the allowable power dissipation will be dependant on the thermal impedance achieved in the application. the derat - ing curve below is valid for the thermal impedance speci - fed in the thermal information section on page 3. ( ) ref ref o 2 1 v v v r r ? ? = ( ) ref ref o 2 1 v v v r r ? ? = ( ) o in o d v v i p ? ? ( ) o in o d v v i p ? ?
?f2010fsemtechfcorporation sc4213h 8 outlinefdrawingffsoic-8 see detail detail a a .050 bsc .236 bsc 8 .010 .150 .189 .154 .193 .012 - 8 0.25 1.27 bsc 6.00 bsc 3.90 4.90 - .157 .197 3.80 4.80 .020 0.31 4.00 5.00 0.51 bxn 2x n/2 tips seating aaa c e/2 2x 1 2 n a d a1 e1 bbb c a-b d ccc c e/2 a2 (.041) .004 .008 - .028 - - - - 0 .016 .007 .049 .004 .053 8 0 0.20 0.10 - 8 0.40 0.17 1.25 0.10 .041 .010 .069 .065 .010 1.35 (1.04) 0.72 - 1.04 0.25 - - - 1.75 1.65 0.25 0.25 - .010 .020 0.50 - c l (l1) 01 0.25 gage plane h h 3. dimensions "e1" and "d" do not include mold flash, protrusions or gate burrs. -b- controlling dimensions are in millimeters (angles in degrees). datums and to be determined at datum plane notes: 1. 2. -a- -h- side view a b c d e h plane reference jedec std ms-012, variation aa. 4. l1 n 01 bbb aaa ccc a b a2 a1 d e e1 l h e c dim min millimeters nom dimensions inches min max max nom e
?f2010fsemtechfcorporation sc4213h 9 land pattern soic-8 (. 205 ) ( 5 . 20 ) z g y p ( c ) 3 . 00 . 118 1 . 27 . 050 0 . 60 . 024 2 . 20 . 087 7 . 40 . 291 x inches dimensions z p y x dim c g millimeters this land pattern is for reference purposes only . consult your manufacturing group to ensure your company ' s manufacturing guidelines are met . notes : 1 . reference ipc - sm - 782 a , rlp no . 300 a . 2 .
?f2010fsemtechfcorporation ?f semtechf2010 allfrightsfreserved.freproductionfinfwholeforfinfpartfisfprohibitedfwithoutfthefpriorfwrittenfconsentfoffthefcopyrightf owner.fthefinformationfpresentedfinfthisfdocumentfdoesfnotfformfpartfoffanyfquotationforfcontract,fisfbelievedf tofbefaccuratefandfreliablefandfmayfbefchangedfwithoutfnotice.fnofliabilityfwillfbefacceptedfbyfthefpublisherfforf anyf consequencef off itsf use.f publicationf thereoff doesf notf conveyf norf implyf anyf licensef underf patentf orf otherf industrialforfintellectualfpropertyfrights.fsemtechfassumesfnofresponsibilityforfliabilityfwhatsoeverfforfanyffailuref orfunexpectedfoperationfresultingffromfmisuse,fneglectfimproperfinstallation,frepairforfimproperfhandlingforf unusualfphysicalforfelectricalfstressfincluding,fbutfnotflimitedfto,fexposureftofparametersfbeyondfthefspecifedf maximumfratingsforfoperationfoutsidefthefspecifedfrange. semtechfproductsfarefnotfdesigned,fintended,fauthorizedforfwarrantedftofbefsuitablefforfusef inf life-supportf applications,f devicesf orf systemsf orf otherf criticalf applications.f inclusionf off semtechfproductsfinfsuchfapplicationsfisfunderstoodftofbefundertakenfsolelyfatfthefcustomersf ownfrisk.fshouldfafcustomerfpurchaseforfusefsemtechfproductsfforfanyfsuchfunauthorizedfapplication,fthefcus - tomerf shallf indemnifyf andf holdf semtechf andf itsf ofcers,f employees,f subsidiaries,f afliates,f andf distributorsf harmlessfagainstfallfclaims,fcostsfdamagesfandfattorneyffeesfwhichfcouldfarise. contactfinformation semtech corporation power mangement products division 200 flynn road, camarillo, ca 93012 phone: (805) 498-2111 fax: (805) 498-3804 www.semtech.com sc4213h 10
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