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standard power data sheet rev. 1.02, 2012-08-24 ifx25401 low dropout linear voltage regulator ifx25401tbv ifx25401tev IFX25401TBV50 ifx25401tev50
type package marking ifx25401tbv pg-to263-5 25401v ifx25401tev pg-to252-5 25401v IFX25401TBV50 pg-to263-5 25401v50 ifx25401tev50 pg-to252-5 2540150 pg-to263-5 pg-to252-5 data sheet 2 rev. 1.02, 2012-08-24 low dropout linear voltage regulator ifx25401 features ? output voltage versions: 5v and adjustable ? very low current consumption ? 400 ma output current capability ? enable input ? very low dropout voltage ? output current limitation ? overtemperature shutdown ? reverse polarity protection ? wide temperature range; -40 c to 125 c ? green product (rohs compliant) applications ? manufacturing and automation ? medical equipment ? building management ? industrial white goods ? security systems ifx25401 is not qualified and manufactured according to the requirements of infineon technologies with regards to automotive and/or transportation applications. for automo tive applications please refer to the infineon tlx (tle, tls, tlf. ....) voltage regulator products. description the ifx25401 is a monolithic integrated low dropout voltag e regulator for load currents up to 400 ma. an input voltage up to 40 v is regulated to an adjustable voltage with a precision of 2%. the device is designed for harsh environments. therefore it is protec ted against overload, short circuit a nd overtemperature conditions by the implemented output current limitation and the overtemper ature shutdown circuit. the adustable output can be configured to regulate between 2.5 v and 20 v. due to its very low quiescent current the ifx25401 is ded icated for use in applications permanently connected to a battery. in addition the device can be switched off vi a the enable input which reduces the current consumption to less than 10 a.
ifx25401 block diagram data sheet 3 rev. 1.02, 2012-08-24 1 block diagram figure 1 block diagram 1 aeb02044 gnd 3 q 5 bandgap reference control amplifier sensor temperature buffer saturation control and protection circuit va 4 en 2 *) **) for fixed voltage regulator only for adjustable voltage regulator only **) *)
data sheet 4 rev. 1.02, 2012-08-24 ifx25401 pin configuration 2 pin configuration 2.1 pin assignment pg-to263-5, pg-to252-5 figure 2 pin configuration (top view) 2.2 pin definitions and funct ions pg-to263-5, pg-to252-5 pin no. symbol function 1i input block to ground directly at the ic with a ceramic capacitor 2en enable high level input signal enables the ic; low level input signal disables the ic; integrated pull-down resistor 3gnd ground internally connected to heat slug 4n.c. va not connected for ifx25401tbv5 0, ifx25401tev50 can be open or connected to gnd voltage adjust for ifx25401tbv, ifx25401tev connect external voltage divider to configure the output voltage 5q output connect a capacitor between q and gnd close to the ic pins and respect the values specified for apacitance and esr in ?functional range? on page 6 heat slug ? heat slug internally connected to gnd; connect to pcb/system gnd and heatsink area aep02560 15 en i n.c. q va gnd pinconfig_pg-to-263-5-1.vsd 12345 i en gnd n.c. q va gnd
ifx25401 general product characteristics data sheet 5 rev. 1.02, 2012-08-24 3 general product characteristics 3.1 absolute maximum ratings note: stresses above the ones listed here may cause perm anent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: integrated protection functions are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not designed for continuous repetitive operation. absolute maximum ratings 1) t j = -40 c to 150 c; all voltages with respect to ground, (unless otherwise specified) 1) not subject to production test, specified by design pos. parameter symbol limit values unit test condition min. max. input i 3.1.1 voltage v i -42 45 v ? enable en 3.1.2 voltage v en -42 45 v ? voltage adjust input va 3.1.3 voltage v va -0.3 10 v ? output q 3.1.4 voltage v q -1 40 v ? temperature 3.1.5 junction temperature t j -40 150 c? 3.1.6 storage temperature t stg -50 150 c? esd susceptibility 3.1.7 esd absorption v esd,hbm -2 2 kv human body model (hbm) 2) 2) esd susceptibility human body model ?hbm? according to jesd22-a114 3.1.8 v esd,cdm -500 500 v charge device model (cdm) 3) 3) esd susceptibility charged device model ?cdm? according to esda stm5.3.1 3.1.9 -750 750 v charge device model (cdm) at corner pins 3)
data sheet 6 rev. 1.02, 2012-08-24 ifx25401 general product characteristics 3.2 functional range note: within the functional or operating range, the ic operat es as described in the circuit description. the electrical characteristics are specif ied within the conditions given in th e electrical char acteristics table. 3.3 thermal resistance note: this thermal data was generated in accordance wit h jedec jesd51 standards. fo r more information, go to www.jedec.org . pos. parameter symbol limit values unit remarks min. max. 3.2.10 input voltage v i v q + 0.5 40 v ifx25401tbv, ifx25401tev; IFX25401TBV50, ifx25401tev50 v q > 4 v 3.2.11 input voltage v i 4.5 40 v ifx25401tbv, ifx25401tev; v q < 4 v 3.2.12 output capacitor?s requirements for stability c q 22 ? f 1) 1) the minimum output capacitance requirement is appl icable for a worst case capacitance tolerance of 30% 3.2.13 esr(c q ) ?3 2) 2) relevant esr value at f = 10 khz 3.2.14 junction temperature t j -40 125 c? pos. parameter symbol limit values unit conditions min. typ. max. ifx25401tbv, IFX25401TBV50 (pg-to263-5) 3.3.1 junction to case 1) 1) not subject to production test, specified by design. r thjc ? 4 ? k/w measured to heat slug 3.3.2 junction to ambient 1) r thja ?22?k/w 2) 2) specified r thja value is according to jedec jesd51-2,-5,-7 at natural convection on fr4 2s2p board; the product (chip+package) was simulated on a 76.2 x 114.3 x 1.5 mm3 bo ard with 2 inner copper layers (2 x 70m cu, 2 x 35m cu). where applicable a thermal via array under the ex posed pad contacted the first inner copper layer. 3.3.3 ? 74 ? k/w footprint only 3) 3.3.4 ? 42 ? k/w 300 mm2 heatsink area 3) 3.3.5 ? 34 ? k/w 600 mm2 heatsink area 3) ifx25401tev, ifx25401tev50 (pg-to252-5) 3.3.6 junction to case 1) r thjc ? 4 ? k/w measured to heat slug 3.3.7 junction to ambient 1) r thja ?27?k/w 2) 3.3.8 ? 115 ? k/w footprint only 3) 3.3.9 ? 52 ? k/w 300 mm2 heatsink area 3) 3.3.10 ? 40 ? k/w 600 mm2 heatsink area 3)
ifx25401 general product characteristics data sheet 7 rev. 1.02, 2012-08-24 3) specified r thja value is according to jedec jesd 51-3 at natural convection on fr4 1s0p board; the product (chip+package) was simulated on a 76.2 114.3 1.5 mm 3 board with 1 copper layer (1 x 70m cu).
data sheet 8 rev. 1.02, 2012-08-24 ifx25401 electrical characteristics 4 electrical characteristics 4.1 electrical character istics voltage regulator electrical characteristics v i =13.5 v; t j = -40 c to 125 c; all voltages with respect to ground (unless otherwise specified) pos. parameter symbol limit va lues unit measuring condition min. typ. max. output q 4.1.1 output voltage accuracy 1) v q -2 ? 2 % ifx25401tbv, ifx25401tev r 2 < 50 k ; v q + 1 v v i 40v; v i > 4.5 v; 5 ma i q 400 ma 4.1.2 output voltage v q 4.9 5.0 5.1 v IFX25401TBV50 ifx25401tev50 6 v v i 28 v; 5 ma i q 400 ma 4.1.3 output voltage adjustable range 3) v q,range 2.5 ? 20 v ifx25401tbv, ifx25401tev; refer to page 13 4.1.4 dropout voltage v dr ?250500mv i q = 250 ma v i > 4.5 v; v dr = v i ? v q 2) 4.1.5 load regulation v q, lo ?535mv i q = 5 ma to 400 ma v i = 4.5 v 4.1.6 line regulation v q, li ? 1525mv v l = 12 v to 32 v i q = 5 ma 4.1.7 output current limitation i q 400 600 1100 ma 2) 4.1.8 power supply ripple rejection 3) psrr ?54?db f r = 100 hz; v r = 0.5 vpp 4.1.9 temperature ou tput voltage drift 3) ?0.5?mv/k? dv q dt ---------- -
ifx25401 electrical characteristics data sheet 9 rev. 1.02, 2012-08-24 current consumption 4.1.10 current consumption, regulator disabled i q ??10 a v en = 0 v t j 100 c 4.1.11 quiescent current i q = i i ? i q i q ?100220 a i q = 1 ma; v en = 5 v 4.1.12 current consumption i q = i i ? i q i q ?510ma i q = 250 ma; v en = 5 v 4.1.13 current consumption i q = i i ? i q i q ? 1525ma i q = 400 ma; v en = 5 v 1) influence of resistor divider on accuracy neglected 2) measured when the output voltage v q has dropped 100 mv from the nominal value obtained at v i = 13.5 v. 3) not subject to production test, specified by design electrical characteristics v i =13.5 v; t j = -40 c to 125 c; all voltages with respect to ground (unless otherwise specified) pos. parameter symbol limit va lues unit measuring condition min. typ. max.
data sheet 10 rev. 1.02, 2012-08-24 ifx25401 electrical characteristics 4.2 typical performance characteristics voltage regulator current consumption i q versus output current i q current consumption i q versus low output current i q output voltage v q versus junction temperature t j dropout voltage v dr versus output current i q 01_iq_iq.vsd 0 2 4 6 8 10 12 14 16 0 100 200 300 400 i q [ma] i q [ma] v i = 13.5 v t j = 25 c 02_iq_iqlow.vsd 0 0,2 0,4 0,6 0,8 1 1,2 1,4 0 20406080100 i q [ma] i q [ma] v i = 13.5 v t j = 25 c 03_vq_tj.vsd -0,5 -0,4 -0,3 -0,2 -0,1 0 0,1 0,2 0,3 0,4 0,5 -4004080120 t j [c] v q [%] i q = 5 ma v i = 13.5 v 150 04_vdr_iq.vsd 0 50 100 150 200 250 300 350 400 450 500 0 100 200 300 400 i q [ma] v dr [mv] t j = 150 c t j = 25 c t j = -40 c
ifx25401 electrical characteristics data sheet 11 rev. 1.02, 2012-08-24 dropout voltage v dr versus junction temperature maximum output current i q versus input voltage v i region of stability: output capacitor?s esr esr(c q ) versus output current i q 0 5 _vdr_tj.vsd 0 50 100 150 200 250 300 350 400 450 500 -40 0 40 80 120 160 t j [c] v dr [mv] i q = 400 ma i q = 100 ma i q = 10 ma 06_iqmax_vi.vsd 0 100 200 300 400 500 600 700 800 900 010203040 v i [v] i q,max [ma] v q = v q,nom - 100 mv t j = -40 c t j = 25 c t j = 150 c 07_esr_iq.vsd 0,01 0,1 1 10 0 100 200 300 400 i q [ma] esr(c q ) [ ] c q = 22 f v i = 13.5 v stable region unstable region
data sheet 12 rev. 1.02, 2012-08-24 ifx25401 electrical characteristics 4.3 electrical character istics enable function the enable function allows disabling/enabling the regulator via the input pin en. the regulator is turned on in case the pin en is connected to a voltage higher than v en,h . this can be e.g. the ba ttery voltage, whereby no additional pull-up resistor is needed. the regulator can be turned off by connecting the pin en to a voltage less than v en,l , e.g. gnd. 4.4 typical performance char acteristics enable function electrical characteristics enable v i =13.5 v; t j = -40 c to 125 c; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) pos. parameter symbol limit va lues unit measuring condition min. typ. max. 4.3.14 high level input voltage v en,h 3.5??v v q 4.9 v 4.3.15 low level input voltage v en,l ??0.5v v q 0.1 v 4.3.16 high level input current i en,h 5 1020a v en = 5 v enabled input current i en versus input voltage v i , (device off) enabled input current i en versus enabled input voltage v en (device on) 09_ien_vi.vsd 0 100 200 300 400 500 600 0 10203040 v i [v] i en [na] t j = 150 c v en = 0.5 v v en = 0.3 v v en = 0.1 v 10_ien_ven.vsd 0 10 20 30 40 50 60 70 80 0 10203040 v en [v] i en [a] t j = 150 c t j = -40 c t j = 25 c
ifx25401 application information data sheet 13 rev. 1.02, 2012-08-24 5 application information note: the following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. figure 3 application diagram a typical application circuit of the ifx25401 is shown in figure 3 . it shows a generic configuration of the voltage regulator with a recommended minimum number of compon ents. the small input capac itor is not required but recommended for high frequency noise filtering. for a nor mal operation the fixed output voltage regulator only requires an output capacitor for stability. the adjustable out put regulator requires an addi tional resistor network to configure the output voltage. dependi ng on the application conditons, add itional components such as an input buffer capacitor or a reverse polarity pr otection diode can be considered as well. input filter capacitor a small ceramic capacitor (e.g. 100nf in figure 3 ) at the device?s input helps filtering high frequency noise. to reach the best filter effect, this capacitor should be placed as close as possible to the device?s input pin. the input filter capacitor does not have an influence on the stability of the device?s regulation loop. output capacitor c q the output capacitor is the on ly external component that is required becau se it is part of the regulation loop. to maintain stability of this regulation loop, the ifx25401 re quires an output capacitor respecting the values given in ?functional range? on page 6 . adjusting the output voltage of variable output regulators ifx25401tbv, ifx25401tev the output voltage of the ifx25401tbv and the ifx25401tev can be adjusted between 2.5 v and 20 v by an external resistor divider connec ted to the voltage adjust pin va. the va pin is connected to the internal error amplifier comparing the voltage at this pin with the internal reference voltage (i.e. 2.5 v). c q r 1 2 r output input ifx25401 optional for adjustable voltage regulator i c voltage adjust e.g. kl 15 ) * ) * ) * * ) i 1q 5 gnd va 4 3 2 en
data sheet 14 rev. 1.02, 2012-08-24 ifx25401 application information figure 4 external components at output for variable voltage regulator the output voltage can be easily calculated, neglecting the current flowing into the va pin: where to neglect the current flowing into the va pin, with: ? v ref : internal reference voltage, typically 2.5v ? r 1 : resistor between regulator output q and voltage adjust pin va ? r 2 : resistor between voltage adjust pin va and gnd for a 2.5 v output voltage the output pin q has to be directly connected to the adjust pin va. take into consideration, that the accuracy of the resistors r 1 and r 2 adds an additional error to the output voltage tolerance. aeb02804 c u rrent a nd sa t u r a tion control intern a l reference 2.5 v typic a l 5 v ref r 2 r 1 c q 22 f q va 4 v q r 1 r 2 + r 2 ------------------- v ref = r 2 50 k <
ifx25401 package outlines data sheet 15 rev. 1.02, 2012-08-24 6 package outlines figure 5 pg-to263-5 b a 0.25 m ?.2 gpt0911 3 10 8.5 1) (15) ?.2 9.25 ?. 3 1 0...0.15 5 x 0.8 ?.1 ?.1 1.27 4.4 b 0.5 ?.1 ?. 3 2.7 4.7 ?.5 2.4 1.7 0...0. 3 a 1) 7.55 4 x all met a l su rf a ce s tin pl a ted, except a re a of c u t. met a l su rf a ce min. x = 7.25, y = 6.9 typic a l 1) 0.1 b 0.1 0.05 8? max.
data sheet 16 rev. 1.02, 2012-08-24 ifx25401 package outlines figure 6 pg-to252-5 green product (rohs compliant) to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. gree n products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). 1) incl u de s mold fl as he s on e a ch s ide. 4.56 0.25 m a 6.5 5.7 max. ?.1 per s ide 0.15 max. -0.2 6.22 ?.5 9.98 (4.24) 1 a 1.14 5 x 0.6 ?.15 0.8 ?.1 +0.15 -0.05 0.1 b -0.04 +0.08 0...0.15 0.51 min. 0.5 b 2. 3 -0.10 0.5 +0.05 -0.04 +0.08 (5) -0.01 0.9 +0.20 b 1) all met a l su rf a ce s tin pl a ted, except a re a of c u t. for further information on packages, please visit our website: http://www.infineon.com/packages . dimensions in mm
ifx25401 revision history data sheet 17 rev. 1.02, 2012-08-24 7 revision history revision date changes 1.02 2012-08-24 coverpage changed, additional information about the enable pin added, disclaimer updated 1.01 2009-10-19 coverpage changed overview page: inserted reference statement to tle/tlf series. 1.0 2009-04-28 initial release
edition 2012-08-24 published by infineon technologies ag 81726 munich, germany ? 2012 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. the infineon technologies component described in this data sheet may be used in life-support devices or systems and/or automotive, aviation and aerospace applic ations or systems only with the express written approval of infineon technologies, if a failure of such component s can reasonably be expected to cause the failure of that life-support automotive, aviation and aerospace device or sy stem or to affect the safety or effectiveness of that device or system. life support devices or systems are in tended to be implanted in the human body or to support and/or maintain and sustain and/or protec t human life. if they fail, it is reaso nable to assume that the health of the user or other persons may be endangered.

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