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TLE4253 low dropout voltage tracking regulator data sheet, rev. 1.2, november 2009 automotive power
type package marking TLE4253gs pg-dso-8 4253 TLE4253e pg-dso-8 exposed pad 4253e pg-dso-8 pg-dso-8 exposed pad data sheet 2 rev. 1.2, 2009-11-09 low dropout voltag e tracking regulator TLE4253 TLE4253gs 1overview features ? tight output tracking tolerance to reference ? output voltage adjust down to 2.0 v ? stable with ceramic output capacitor ? flexibility of output vo ltage adjust higher or lower than reference, proportional to the reference voltage ? 250 ma output current capability ? low dropout voltage ? combined tracking / enable input ? very low current consumption in off mode ? pg-dso-8 packages with lo west thermal resistance ? wide input voltage range -42 v v i 45 v ? wide temperature range: -40 c t j 150 c ? output protected against short circuit to gnd and battery ? overtemperature protection ? reverse polarity proof ? suitable for use in automotive electronics ? green product (rohs compliant) ? aec qualified functional description the TLE4253 is a monolithic integrated low-dropout voltage tracking regulator in small pg-dso-8 packages. the exposed pad (ep) package variant pg-dso-8 exposed pad offers extremely low thermal resistance. the ic is designed to supply off-board systems, e. g. sensors in engine management systems under the severe conditions of automotive applications. therefore, the ic is equi pped with additional protecti on functions against reverse polarity and short circuit to gnd and battery. with supply voltages up to 40 v, the output voltage follo ws a reference voltage applied at the adjust input with high accuracy. the reference voltage applied directly to the adju st input or by an e. g. external resistor divider can be 2.0 v at minimum. the output is able to drive loads up to 250 ma at mini mum while the device follows the e. g. 5 v output of a main voltage regulator acting as reference with high accuracy. the TLE4253 tracker can be set into shutdown mode in order to reduce the quiescent current to an extremly low value. this makes the ic suitable to low power battery applications.
data sheet 3 rev. 1.2, 2009-11-09 TLE4253 block diagram 2 block diagram figure 1 block diagram saturation control and protection circuits temperature control + - i gnd q fb en/ adj tle 4253 + - = typ. 1.4v
TLE4253 pin configuration data sheet 4 rev. 1.2, 2009-11-09 3 pin configuration 3.1 pin assignment figure 2 pin configuration and block diagram 3.2 pin definitions and functions pin symbol function 1q tracker output. block to gnd with a capacitor close to the ic terminals, respecting capacitance and esr requirements given in the table ?functional range?. 2, 3, 6, 7 gnd ground reference (version TLE4253gs only) . interconnect the pins on pcb. connect to heatsink area. 6gnd ground (version TLE4253e only) . connect to exposed pad. 2, 3, 7 n. c. not connected (version TLE4253e only) . connect to gnd externally. 4fb feedback input for tracker. non inverting input of the internal error amplifier to control the output voltage. connect this pin directly to the output pin in order to obtain lower or equal output voltages with respect to the reference voltage and connect a voltage divider for higher output voltages than the reference (see application information). 5en/adj adjust / enable. connect the reference to this pin. the active high signal of the reference turns on the device, with active low the tracker is disabled. the reference voltage can be connected directly or by a voltage divider for lower output voltages (see application information). 8i input. ic supply. for compensating line influences, a capacitor close to the ic terminals is recommended. ?ep exposed pad (version TLE4253e only) . attach the exposed pad on package bottom to the heatsink area on circuit board. connect to gnd. gnd gnd gnd fb en/adj i q 4 3 2 1 TLE4253gs gnd 5 6 7 8 n. c. n. c. gnd fb en/adj i q 4 3 2 1 TLE4253e n. c. 5 6 7 8
data sheet 5 rev. 1.2, 2009-11-09 TLE4253 general product characteristics 4 general product characteristics 4.1 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) -40 c t j 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 conditions min. max. voltages 4.1.1 input voltage v i -42 45 v ? 4.1.2 output voltage v q -2 45 v ? 4.1.3 adjust / enable input v adj/en -42 45 v ? 4.1.4 feedback input v fb -42 45 v ? temperature 4.1.5 junction temperature t j -40 150 c? 4.1.6 storage temperature t stg -50 150 c? esd rating 4.1.7 esd susceptibility v esd,hbm -4 4 kv hbm 2) 2) esd susceptibility human body model ?hbm? according to eia/jesd 22-a 114b. 4.1.8 v esd,cdm -1 1 kv cdm 3) 3) esd susceptibility charged device model ?cdm? according to eia/jesd22 -c101 or esda stm5.3.1.
TLE4253 general product characteristics data sheet 6 rev. 1.2, 2009-11-09 4.2 functional range note: within the functional range the ic operates as de scribed in the circuit description. the electrical characteristics are specifi ed within the conditions given in the re lated electrical ch aracteristics table. 4.3 thermal resistance pos. parameter symbol limit values unit conditions min. max. 4.2.1 input voltage v i 3.5 40 v v i v q + v dr 4.2.1 adjust / enable input voltage (voltage tracking range) v adj/en 2.0 ? v ? 4.2.2 junction temperature t j -40 150 c? 4.2.3 output capaci tor requirements c q 10 f ? 1) 1) the minimum output capacitance requ irement is applicable for a worst ca se capacitance tolerance of 30%. 4.2.4 esr cq ?5 ? ? 2) 2) relevant esr value at f = 10 khz. pos. parameter symbol limit value unit conditions min. typ. max. pg-dso-8: 4.3.1 junction to soldering point r thjsp ? 39 ? k/w pins 2 - 3 and 6 - 7 fixed to t a 4.3.2 junction to ambient r thja ? 150 ? k/w footprint only 1) 1) package mounted on pcb fr4; 80 x 80 x 1.5 mm; 35 m cu, 5 m sn; horizontal position; zero airflow. not subject to production test; specified by design. 4.3.3 ? 91 ? k/w 300 mm 2 pcb heatsink area 1) 4.3.4 ? 81 ? k/w 600 mm 2 pcb heatsink area 1) 4.3.5 ? 65 ? k/w 2s2p board 2) 2) specified r thja value is according to 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 mm board with 2 inner copper layers (2 x 70m cu, 2 x 35m cu). where applicable a thermal via array under the package contacted the first inner copper layer. pg-dso-8 exposed pad: 4.3.6 junction to case bottom r thjc ? 9 ? k/w measured to exposed bottom pad 4.3.7 junction to ambient r thja ? 169 ? k/w footprint only 1) 4.3.8 ? 64 ? k/w 300 mm 2 pcb heatsink area 1) 4.3.9 ? 55 ? k/w 600 mm 2 pcb heatsink area 1) 4.3.10 ? 49 ? k/w 2s2p board 2)
data sheet 7 rev. 1.2, 2009-11-09 TLE4253 electrical characteristics 5 electrical characteristics 5.1 tracking regulator the output voltage v q is controlled by comparing it to the voltage applied at pin adj/en and driving a pnp pass transistor accordingly. th e control loop stability depe nds on the outpu t capacitor c q , the load current, the chip temperature and the poles/zeros introduced by the integrated circuit. to ensure stable operation, the output capacitor?s capacitance and its equival ent series resistor esr requirements given in the table ?functional range? have to be maintained. for details see also the typi cal performance graph ?output capacitor series resistor esr cq vs. output current i q ?. also, the output capacitor shall be sized to buffer load transients. an input capacitor c i is strongly recommended to buffer line influen ces. connect the capacitors close to the ic terminals. protection circuitry prevent the ic as well as the application fr om destruction in case of catastrophic events. these safeguards contain output curr ent limitation, reverse polarity protection as well as thermal shutdown in case of overtemperature. in order to avoid excessive power dissipation that coul d never be handled by the pass element and the package, the maximum output current is de creased at high input voltages. an overtemperature protection circuit prevents the ic from immediate dest ruction under fault conditions (e. g. output continuously short-circuited to gnd) by redu cing the output current. a thermal balance below 200 c junction temperature is established. please note that a junction temperature above 150 c is outside the maximum ratings and reduces the ic lifetime. the TLE4253 allows a negative supply voltage. however, several small currents are fl owing into the ic. for details see electrical characteristics table and typical performance graph. the thermal protection circuit is not operating during reverse polarity condition. table 1 electrical characteristics tracking regulator v i = 13.5 v; v adj/en 2.0 v; v fb = v q ; -40 c t j 150 c; all voltages with respect to grou nd (unless other wise specified). pos. parameter symbol limit values unit test condition min. typ. max. 5.1.1 output voltage tracking accuracy ? v q = v en/adj - v q ? v q -5 ? 5 mv i q = 30 ma; v adj/en = 5 v 5.1.2 -10 ? 10 mv 0.1 ma i q 200 ma; 3.5 v v i 32 v v adj/en = 2 v 5.1.3 -15 ? 15 mv 0.1 ma i q 250 ma; 9 v v i 32 v v adj/en = 5 v 5.1.4 load regulation steady-state |d v q,load |? ? 10 mv i q = 0.1 ma to 200 ma; v adj/en = 5 v 5.1.5 line regulation steady-state |d v q,line |? ? 10 mv v i = 6 v to 32 v; i q = 10 ma v adj/en = 5 v 5.1.6 power supply ripple rejection psrr 60 ? ? db f ripple = 100 hz; v ripple = 1 vpp c q = 10 f, ceramic type 1)
TLE4253 electrical characteristics data sheet 8 rev. 1.2, 2009-11-09 5.1.7 dropout voltage v dr = v i - v q v dr ? 280 600 mv i q = 200 ma 2) 5.1.8 output current limitation i q,max 251 400 600 ma v q = ( v adj - 0.1 v); v adj/en = 5 v 5.1.9 reverse current i q -10 -5.5 ? ma v i = 0 v; v q = 16 v; v adj/en = 5 v 5.1.10 reverse current at negative input voltage i i -5 -2 ? ma v i = -16 v; v q = 0 v; v adj/en = 5 v feedback input fb: 5.1.11 feedback input biasing current i fb 0.1 0.5 a v fb = 5 v overtemperature protection: 5.1.12 junction temperature equilibrium t j,eq 151 ? 200 c t j increasing due to power dissipation generated by the ic 1) 1) parameter not subject to produ ction test; specified by design. 2) measured when the output voltage v q has dropped 100 mv from its nominal value. table 1 electrical characteristics tracking regulator v i = 13.5 v; v adj/en 2.0 v; v fb = v q ; -40 c t j 150 c; all voltages with respect to grou nd (unless other wise specified). pos. parameter symbol limit values unit test condition min. typ. max.
data sheet 9 rev. 1.2, 2009-11-09 TLE4253 electrical characteristics typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) output voltage v q vs. adjust voltage v adj output voltage v q vs. input voltage v i output current limitation i q,max vs. input voltage v i output current limitation i q,max vs. output voltage v q v q [v] vq-vadj.vsd 3 2 1 4 v i = 13.5 v 234 1 v adj [v] t j = 150 c t j = -40 c v q [v] vq-vi.vsd 3 2 1 4 v adj = 5 v 57 3 v i [v] t j = 150 c t j = -40 c 1 v dr 5 0 v i [v] 20 30 i q [ma] soa.vsd 300 200 100 400 10 40 600 t j = 25 c v adj = 5 v t j = 125 c v q [v] 300 400 i q [ma] iqmax-v q.vsd 3 2 1 200 0 5 v i = 13.5 v v adj = 5 v t j = 125c t j = 25c
TLE4253 electrical characteristics data sheet 10 rev. 1.2, 2009-11-09 typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) output capacitor series resistor esr cq vs. output current i q output capacitor series resistor esr cq vs. output current i q power supply ripple rejection psrr line regulation d v q,line vs. input voltage change d v i e s r-iq_10u.vsd 1 0.1 0.01 esr cq [ ? ] 0 i q [ma] 100 150 50 200 10 c q = 10 f 6 v < v i < 28 v -40 c < t j < 150 c stable region e s r-iq_6u8.vsd 1 0.1 0.01 esr cq [ ? ] 0 i q [ma] 100 150 50 200 10 c q = 6.8 f 6 v < v i < 28 v -40 c < t j < 150 c stable region 0.01 f [khz] 10 psrr [db] psrr.vsd 70 60 0.1 1 100 90 40 50 i q = 1 ma v ripple = 1 v v in = 13.5 v c q = 10 f ceramic t j = 25 c i q = 100 ma 0 ? v i [v] 5 1520 3035 ? v q [mv] dvq-dvi.vsd -1 -2 -3 0 10 25 2 0 i q = 10 ma steady-state condition v i , init ial = 6 v v adj = 5 v i q = 100 ma
data sheet 11 rev. 1.2, 2009-11-09 TLE4253 electrical characteristics typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) load regulation d v q,line vs. output current change d i q tracking accuracy ? v q vs. junction temperature t j line transient response load transient response 0 ? q [ma] 100 150 200 ? v q [mv] dv q-diq.vsd -1 -2 -3 0 50 t j = 125 c t j = 25 c steady-state condition i q , init ial = 0 ma v adj = 5 v -40 t j [c] -20 20 40 80 100 ? v q [mv] dv q-tj.vsd 0 -2 -4 2 0 60 140 120 i q = 0.1 ma i q = 200 ma 0 t [s] 80 100 ? v q [mv] dv i-reponse.vsd 16 9 40 120 v i [v] i q = 5 ma c q = 10 f ceramic -25 125 0 0 t [s] 100 150 ? v q [mv] diqresponse.vsd 100 10 0 50 200 q [ma] v i = 13.5 v v adj = 5 v c q = 10 f 50
TLE4253 electrical characteristics data sheet 12 rev. 1.2, 2009-11-09 typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) dropout voltage v dr vs. output current i q dropout voltage v dr vs. junction temperature t j reverse current i i vs. input voltage v i reverse output current i q vs. output voltage v q 0.2 i q [ma] 110 v dr-iq_log.vsd 100 10 1000 100 v dr [mv] t j = 150 c t j = 25 c -40 t j [c] -20 20 40 80 100 v dr [mv] v dr-tj .vsd 300 200 100 400 0 60 140 120 600 i q = 200 ma -32 v i [v] -16 -8 i i [ma] ii-v i.vsd -4 -6 -8 -2 -24 0 +1 t j = 150 c t j = 25 c v q = 0 v v adj = 5 v 0 v q [v] 16 24 i q [ma] iq-v q.vsd -8 -12 -16 -4 832 +2 v i = 0 v v adj = 5 v t j = 150 c t j = 25 c
data sheet 13 rev. 1.2, 2009-11-09 TLE4253 electrical characteristics 5.2 current consumption table 2 electrical characteristics current consumption v i = 13.5 v; v adj/en 2.0 v; v fb = v q ; -40 c t j 150 c; all voltages with respect to grou nd (unless other wise specified). pos. parameter symbol limit values unit conditions min. typ. max. 5.2.1 quiescent current stand-by mode i q1 ?02a v q = 0 v; v adj/en 0.4 v; t j 85 c 5.2.2 current consumption i q = i i - i q i q2 ? 120 150 a i q 100 a; v adj/en = 5 v; t j 85 c 5.2.3 ? 7 15 ma i q 200 ma; v adj/en = 5 v 5.2.4 current consumption dropout region; i q = i i - i q i q3 ?13ma v adj = v i = 5 v; i q = 0 ma
TLE4253 electrical characteristics data sheet 14 rev. 1.2, 2009-11-09 typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) current consumption i q2 vs. junction temperature t j current consumption i q vs. output current i q current consumption i q vs. input voltage v i quiescent current i q1 vs. junction temperature t j iq-tj.vsd 1 0.1 0.01 10 i q [ma] -40 t j [c] -20 20 40 80 100 0 60 140 120 v i = 13.5v i q = 200 a i q = 200 ma 0.2 i q [ma] 110 iq-iq.vsd 1 0.1 0.01 10 100 i q [ma] v i = 6 v v i > 9 v v en/adj = 5 v iq-vi.vsd 0 5 10 15 20 25 30 0 10203040 v i [v] i q [ma] r load = 25 ? r load = 100 ? r load = 50 ? r load = 500 ? iq1-tj.vsd 1 0.1 i q1 [a] -40 t j [c] -20 20 40 80 100 060 140 120 v i = 13.5v v en/adj = 0 v
data sheet 15 rev. 1.2, 2009-11-09 TLE4253 electrical characteristics 5.3 adjust / enable input in order to reduce the quiescent current to a minimum, the TLE4253 can be switched to stand-by mode by setting the adjust/enable input ?adj/en? to ?low?. in case the pin ?adj/en is left open, an internal pull-do wn resistor keeps the voltage at the pin low and therefore ensures that the regulator is switched off. typical performance characteristics tracking regulator v adj/en = 5 v; v fb = v q (unless otherwise noted) table 3 electrical characteristics adjust / enable v i = 13.5 v; v adj/en 2.0 v; v fb = v q ; -40 c t j 150 c; all voltages with respect to grou nd (unless other wise specified). pos. parameter symbol limit values unit test condition min. typ. max. 5.3.1 adjust / enable low signal valid v adj/en,low ??0.4v v q = 0 v; i i < 2 a; t j 85 c 5.3.2 adjust / enable high signal valid (tracking region) v adj/en,high 2??v v q settled: | v q - v adj/en | < 10 mv; i q = 10 ma 5.3.3 adjust / enable input current i adj/en ?3.85.5a v adj/en = 5 v; 5.3.4 adjust / enable internal pull-down resistor r adj/en 11.52m ? startup sequence 0 t [s] 20 60 80 120 140 v [v] 4253_startup.vsd 3 2 1 4 40 100 v adj d v q / d t = ( i q,max - i load ) / c q overshoot depends on load current, c q , esr ( c q )
TLE4253 application information data sheet 16 rev. 1.2, 2009-11-09 6 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. the application circuits shown are simp lified examples. the function must be verified in the real application. figure 3 application circuit: output voltage v q equal to refe rence voltage v ref figure 3 shows the typical schematic for applications where the tracker output voltage equals the reference voltage v ref applied to the pin ?en/adj?. the pin ?fb? is conne cted directly to the out put. the reference voltage is directly applied ?en/adj?. adj ifb q en/ gnd tle 4253 g 8 2, 3, 6, 7 5 4 1 c, e.g. c167 vdd i/o main c supply, e.g. tle4271-2 tle4278 tle4470 etc. iq gnd vbat e.g. off board supply, sensors vref
data sheet 17 rev. 1.2, 2009-11-09 TLE4253 application information figure 4 application circuit: output voltage v q lower than reference voltage v ref in order to obtain a lower output voltage v q at the tracker output than the reference voltage v ref , a voltage divider according to figure 4 has to be used. the output voltage v q then calculates: with a given reference voltage v ref , the desired output voltage v q and the resistor value r1 adj , the resistor value for r2 adj is given by: taking into consideration also the effect of the internal en/adj pull-down resistor, the external resistor divider?s r2 adj has to be selected to: en/ adj i q gnd tle 4253 g 8 5 1 c, e.g. c167 vdd i/o main c supply, e.g. tle4271-2 tle4278 tle4470 etc. iq gnd vbat vq < vref r1 adj r2 adj vref fb 4 2, 3, 6, 7 v q v ref r2 adj r1 adj r2 adj + --------------------------------------- - ?? ?? ? = r2 adj r1 adj v q v ref v q ? --------------------------- ?? ?? ? = r2 adj select , r2 adj r pulldown min , ? r pulldown min , r2 adj ? --------------------------------------------------------- - ?? ?? =
TLE4253 application information data sheet 18 rev. 1.2, 2009-11-09 figure 5 application circuit: output voltage v q higher than reference voltage v ref for output voltages higher than the reference voltage, th e voltage divider has to be applied between the feedback and the output according to figure 5. the equation for t he output voltage with respect to the reference voltage is given by: keep in mind that the input voltage has to be at minimu m equal to the output voltage plus the dropout voltage of the regulator. with a given reference voltage v ref , the desired output voltage v q and the resistor value r1 fb , the resistor value for r2 fb is given by: 4 adj ifb q en/ gnd tle 4253 g 8 2, 3, 6, 7 5 1 c, e.g. c167 vdd i/o main c supply, e.g. tle4271-2 tle4278 tle4470 etc. iq gnd vbat vq > vref vref r1 fb r2 fb v q v ref r1 fb r2 fb + r2 fb --------------------------------- ?? ?? ? = r2 fb r1 fb v ref v q v ref ? --------------------------- ?? ?? ? =
data sheet 19 rev. 1.2, 2009-11-09 TLE4253 package outlines 7 package outlines figure 6 outline and footprint pg-dso-8 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. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). +0.06 0.19 0.35 x 45? 1) -0.2 4 c 8 max. 0.64 ?.2 6 ?.25 0.2 8x m c 1.27 +0.1 0.41 0.2 m a -0.06 1.75 max. (1.45) ?.07 0.175 b 8x b 2) index marking 5 -0.2 1) 4 1 85 a 1) does not include plastic or metal protrusion of 0.15 max. per side 2) lead width can be 0.61 max. in dambar area gps01181 0.1 hlg05506 e a b l reflow soldering dimensions: e = 1.27 a = 5.69 l = 1.31 b = 0.65 find all packages, sorts of packing and others at the infineon internet page ?packages?: http://www.infineon.com/packages . dimensions in mm
TLE4253 package outlines data sheet 20 rev. 1.2, 2009-11-09 figure 7 outline and footprint pg-dso-8 exposed pad (exposed pad) 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. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). pg-dso-8-27-po v01 14 85 8 14 5 8x 0.41 ?.09 2) m 0.2 d c a-b 1.27 c stand off +0 -0.1 0.1 (1.45) 1.7 max. 0.08 seating plane c a b 4.9 ?.1 1) a-b c 0.1 2x 3 ) jedec reference ms-012 variation ba 1) does not include plastic or metal protrusion of 0.15 max. per side 2) dambar protrusion shall be maximum 0.1 mm total in excess of lead width bottom view ?.2 3 ?.2 2.65 0.2 ?.2 d 6 m d 8x 0.64 ?.25 3.9 ?.1 1) 0.1 0.35 x 45? cd2x +0.06 0.19 8 ? max. index marking find all packages, sorts of packing and others at the infineon internet page ?packages?: http://www.infineon.com/packages . dimensions in mm
data sheet 21 rev. 1.2, 2009-11-09 TLE4253 revision history 8 revision history revision date changes 1.2 2009-11-09 updated version data sheet, vers ion TLE4253e in pg-dso-8 exposed pad and all related description added: in ?overview? on page 2 picture for package pg-dso-8 updated in ?features? on page 2 ?package? replaced by ?packages? in ?functional description? on page 2 ?a small pg-dso-8 package? replaced by ?small pg-dso-8 packages?; ?the exposed pad (ep) package variant pg-dso-8 exposed pad offers extremely low thermal resistance.? added; ?suits? replaces by ?makes? in ?pin assignment? on page 4 , package pg-dso-8 exposed pad added in ?pin definitions and functions? on page 4 all definition for package pg-dso-8 exposed pad added in ?thermal resistance? on page 6 all values for package pg-dso-8 exposed pad added ( item 4.3.6 - item 4.3.10 ) in ?adjust / enable input? on page 15 typo corrected: ?resisto rs? replaced by ?resistor? in ?package outlines? on page 19 package pg-dso-8 exposed pad added 1.1 2008-08-19 updated version final datasheet for TLE4253gs: ?package outlines? on page 19 updated; in ?typical performance characteristics tracking regulator? on page 14 graph ?current consumption iq vs. input voltagevi? on page 14 added 1.0 2007-07-10 initial final datasheet for TLE4253gs. ? for the TLE4253es (exposed pad) product variant, please refer to the respective datasheet 0.41 2006-01-27 target datasheet
edition 2009-11-09 published by infineon technologies ag 81726 munich, germany ? 2009 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. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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