View TLE4271-G_3376903.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

5-v low-drop fixed voltage regulator tle 4271 data sheet rev. 2.1 1 2000-02-14 p-to220-7-11 p-to263-7-1 p-to 220-7-12 features ? output voltage tolerance 2% ? low-drop voltage ? integrated overtemperature protection ? reverse polarity protection ? input voltage up to 42 v ? overvoltage protection up to 65 v ( 400 ms) ? short-circuit proof ? suitable for use in automotive electronics ? wide temperature range ? adjustable reset and watchdog time t not for new design, use tle 4271-2 instead. functional description it is a 5-v low-drop fixed-voltage regulator. the maximum input voltage is 42 v (65 v, 400 ms). up to an input voltage of 26 v and for an output current up to 550 ma it regulates the output voltage within a 2 % accuracy. the short circuit protection limits the output type ordering code package t tle 4271 q67000-a9210-a901 p-to220-7-11 t tle 4271 s q67000-a9244-a901 p-to220-7-12 t tle 4271 g q67006-a9195-a901 p-to263-7-1 current of more than 650 ma. the ic can be switched off via the inhibit input. an integrated watchdog monitors the connected controller. the device incorporates overvoltage protection and temperature protection that disables the circuit at unpermissibly high temperatures.
tle 4271 data sheet rev. 2.1 2 2000-02-14 pin configuration (top view) figure 1 pin definitions and functions pin symbol function 1 i input ; block to ground directly on the ic with ceramic capacitor. 2 inh inhibit 3ro reset output ; the open collector output is connected to the 5 v output via an integrated resistor of 30 k w. 4 gnd ground 5d reset delay ; connect a capacitor to ground for delay time adjustment. 6w watchdog input 7q 5-v output ; block to ground with 22 m f capacitor, esr < 3 w . p-to220-7-11 p-to263-7-1 aep01939 gnd inh i ro w d q 17 aep01938 inh ro gnd 17 w d i q p-to220-7-12 gnd inh i ro 1 w aep02017 d q 7
tle 4271 data sheet rev. 2.1 3 2000-02-14 circuit description the control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of a series transistor via a buffer. saturation control as a function of the load current prevents any over-saturation of the power element. if the output voltage decreases below 4.5 v, an external capacitor c d on pin 4 (d) will be discharged by the reset generator. if the voltage on this capacitor v d drops below v drl , a reset signal is generated on pin 2 (ro), i.e. reset output is set low. if the output voltage rises above 4.5 v, c d will be charged with constant current. after the power-on-reset time v d reaches v du and the reset output will be set high again. the value of the power- on-reset time can be set within a wide range depending on the capacity of c d . the value of the pull-up resistor at reset output is typically 30 k w . after v d has reached the voltage v du and reset was set to high, the watchdog circuit is enabled and discharges c d with a constant current. if there is no positive-going edge observed at watchdog input, c d will be discharged down to v dwl . then reset will be set low and the watchdog circuit will be disabled. c d will be charged with the current as at power-on reset until v d reaches v du and reset will be set high again. if a watchdog pulse will be observed before c d is discharged down to v dwl , the watchdog circuit will be enabled and c d will be charged too, but reset will not be set low. after v d has reached v du , the periodical behavior starts again. the ic also incorporates a number of internal circuits for protection against: ? overload ? overvoltage ? overtemperature ? reverse polarity
tle 4271 data sheet rev. 2.1 4 2000-02-14 figure 2 block diagram temperature sensor saturation control and protection circuit + - reference bandgap adjustment reset generator watchdog 4 2 1 7 3 5 6 inh gnd w aeb01940 control amplifier buffer i q d r
tle 4271 data sheet rev. 2.1 5 2000-02-14 absolute maximum ratings t j = C 40 to 150 c parameter symbol limit values unit notes min. max. input voltage voltage current v i v i i i C 42 C C 42 65 C v v ma C t 400 ms internally limited inhibit voltage voltage current v e v e i e C 42 C C 42 65 C v v ma C t 400 ms internally limited reset output voltage current v r i r C 0.3 C 42 C v ma C internally limited reset delay voltage current v d i d C 0.3 C 5 7 5 v ma C C watchdog voltage current v w i w C 0.3 C 5 7 5 v ma C C output voltage current v q i q C 1.0 C 5 16 C v ma C internally limited ground current i gnd C 0.5 C a C temperatures junction temperature storage temperature t j t stg C C 50 150 150 c c C C
tle 4271 data sheet rev. 2.1 6 2000-02-14 operating range parameter symbol limit values unit notes min. max. input voltage v i 640vC junction temperature t j C 40 150 cC thermal resistance junction ambient r thja C65 70 k/w k/w C p-to263 junction case r thjc z thjc C C 3 2 k/w k/w C t < 1ms
tle 4271 data sheet rev. 2.1 7 2000-02-14 characteristics v i = 13.5 v; C 40 c t j = 125 c (unless otherwise specified) parameter symbol limit values unit test condition min. typ. max. output voltage v q 4.90 5.00 5.10 v 5 ma i q 550 ma; 6 v v i 26 v output voltage v q 4.90 5.00 5.10 v 26 v v i 36 v; i q 300 ma; output current limiting i qmax 650 800 C ma v q = 0 v current consumption i q = i i i q CC50 m a v e = 0 v; i q = 0 ma current consumption i q = i i i q C 800 C m a v e = 5 v; i q = 0 ma current consumption i q = i i C i q i q C 1 1.5 ma i q = 5 ma current consumption i q = i i C i q i q C 5575ma i q = 550 ma current consumption i q = i i C i q i q C 7090ma i q = 550 ma; v i =5v drop voltage v dr C 350 700 mv i q = 550 ma 1) load regulation d v q C 2550mv i q = 5 to 550 ma; v i = 6 v supply voltage regulation d v q C 1225mv v i = 6 to 26 v i q = 5 ma power supply ripple rejection psrr C54Cdb f r = 100 hz; v r = 0.5 v pp 1) drop voltage = v i C v q (measured when the output voltage has dropped 100 mv from the nominal value obtained at 13.5 v input)
tle 4271 data sheet rev. 2.1 8 2000-02-14 reset generator switching threshold v rt 4.5 4.65 4.8 v C reset high voltage v roh 4.5 C C v C reset low voltage v rol C60Cmv r intern = 30 k w 2) ; 1.0 v v q 4.5 v reset low voltage v rol C 200 400 mv i r = 3 ma, v q = 4.4 v reset pull-up r 18 30 46 k w internally connection to q3 lower reset timing threshold v drl 0.2 0.45 0.8 v v q < v rt charge current i d 81425 m a v d = 1.0 v upper timing threshold v du 1.4 1.8 2.3 v C delay time t d 8 1318ms c d = 100 nf reset reaction time t rr CC3 m s c d = 100 nf overvoltage protection turn-off voltage v i , ov 40 44 46 v C inhibit inhibit on voltage v inh 1.0 2.0 3.5 v v q = high (> 4.5 v) inhibit off voltage v inh 0.8 1.3 3.3 v v q = low (< 0.8 v) inhibit current i inh 81225 m a v inh = 5 v watchdog upper timing threshold v du 1.4 1.8 2.3 v C lower watchdog timing threshold v dwl 0.2 0.45 0.8 v C discharge current i dis 1.5 2.7 3.5 m a v d = 1 v characteristics (contd) v i = 13.5 v; C 40 c t j = 125 c (unless otherwise specified) parameter symbol limit values unit test condition min. typ. max.
tle 4271 data sheet rev. 2.1 9 2000-02-14 charge current i d 81425 m a v d = 1 v watchdog period t w 40 55 75 ms c d = 100 nf watchdog trigger time t wt 30 45 66 ms c d = 100 nf see diagram watchdog pulse slew rate v w 5CCv/ m s from 20% to 80% v q 2) reset peak is always lower than 1.0 v. characteristics (contd) v i = 13.5 v; C 40 c t j = 125 c (unless otherwise specified) parameter symbol limit values unit test condition min. typ. max.
tle 4271 data sheet rev. 2.1 10 2000-02-14 figure 3 test circuit figure 4 application circuit 3 2 v v i v inh i c d i d 5 d 4 w gnd v 6 aes02757 r v v q 470 nf 1000 f i m i i tle 4271 17 q 22 f r m i 22 f to mc reset 3 4 5 100 nf aes02758 m 470 nf input tle 4271 1 7 5 v-output 6 2 e.g. kl 15 input watchdog signal from mc
tle 4271 data sheet rev. 2.1 11 2000-02-14 application description the ic regulates an input voltage in the range of 5.5 v < v i <36vto v qnom = 5.0 v. up to 26 v it produces a regulated output current of more than 550 ma. above 26 v the save-operating-area protection allows operation up to 36 v with a regulated output current of more than 300 ma. overvoltage protection limits operation at 42 v. the overvoltage protection hysteresis restores operation if the input voltage has dropped below 36 v. the ic can be switched off via the inhibit input, which causes the quiescent current to drop below 50 m a. a reset signal is generated for an output voltage of v q < 4.5 v. the watchdog circuit monitors a connected controller. if there is no positive- going edge at the watchdog input within a fixed time, the reset output is set to low. the delay for power-on reset and the maximum permitted watchdog-pulse period can be set externally with a capacitor. design notes for external components an input capacitor c i is necessary for compensation of line influences. the resonant circuit consisting of lead inductance and input capacitance can be damped by a resistor of approx. 1 w in series with c i . an output capacitor c q is necessary for the stability of the regulating circuit. stability is guaranteed at values of c q 3 22 m f and an esr of <3 w . reset circuitry if the output voltage decreases below 4.5 v, an external capacitor c d on pin d will be discharged by the reset generator. if the voltage on this capacitor drops below v drl ,a reset signal is generated on pin ro, i.e. reset output is set low. if the output voltage rises above the reset threshold, c d will be charged with constant current. after the power-on- reset time the voltage on the capacitor reaches v du and the reset output will be set high again. the value of the power-on-reset time can be set within a wide range depending of the capacitance of c d . reset timing the power-on reset delay time is defined by the charging time of an external capacitor c d which can be calculated as follows: c d =( t d i d )/ d v definitions: c d = delay capacitor t d = reset delay time i d = charge current, typical 5 ma d v = v du , typical 1.9 v v du = upper delay switching threshold at c d for reset delay time t d = d v c d / i d
tle 4271 data sheet rev. 2.1 12 2000-02-14 the reset reaction time t rr is the time it takes the voltage regulator to set the reset out low after the output voltage has dropped below the reset threshold. it is typically 1 m s for delay capacitor of 47 nf. for other values for c d the reaction time can be estimated using the following equation: t rr ? 20 s/f c d figure 5 time response aes01927 d = d i d v d c t < t rr rr t t d d v v q v i v r v rt v drl du v power-on-reset thermal shutdown at input voltage drop undervoltage spike secondary load bounce
tle 4271 data sheet rev. 2.1 13 2000-02-14 watchdog timing figure 6 time response, watchdog behavior aes01943 w t t wr d v v q v i v r v dwl du v w v w t du v = - v dwl ( ) ( ) i dis + i d i d x dis ii wr t v = du - d dwl v c d d c = (watchdog reset time) t i = wt v du dis v - dwl c d wt t
tle 4271 data sheet rev. 2.1 14 2000-02-14 typical performance characteristics output voltage v q versus temperature t j output voltage v q versus input voltage v i ( v i = v e ) 4.90 4.80 4.70 40 -40 0 4.60 5.00 v 5.20 5.10 q 160 c 80 120 t j aed01928 v i = 13.5 v v r 6 4 2 0 4 0 2 8 12 10 q v v 10 v 68 v i aed01929 = 25 l w
tle 4271 data sheet rev. 2.1 15 2000-02-14 output current i q versus temperature t j current consumption i q versus output current i q output current i q versus input voltage v i current consumption i q versus output current i q 600 400 200 40 -40 0 0 800 ma 1200 1000 q i 160 c 80 120 t j aed01930 0 0 20 120 60 40 i q ma aed01932 80 ma 1 2 3 4 5 6 q i v i = 13.5 v 0.6 0.4 0.2 20 010 0 0.8 a 1.2 1.0 q i = 25 c t j 50 v 30 40 v i aed01931 = 125 c t j 300 40 30 100 0 200 0 10 20 80 60 70 50 ma q i v = 13.5 v i ma 400 600 i q aed01933
tle 4271 data sheet rev. 2.1 16 2000-02-14 current consumption i q versus input voltage v i inhibit current i e versus inhibit voltage v e drop voltage v dr versus output current i q output voltage v q versus inhibit voltage v e 60 40 20 20 010 0 80 ma 120 100 q i 50 v 30 40 v i aed01934 = 20 r l w l r = 50 r = 10 l w w 0 0 1 6 3 2 e aed01944 4 v 2 4 6 8 10 12 v i = 13.5 v = 25 c j t e, high i i e, on i e, off 5 e v m a i 400 200 300 100 200 0 400 0 800 600 700 500 dr v mv ma 600 1000 i q aed02759 t = 125 c j t = 25 c j 3 3 2 1 0 0 1 2 6 5 4 v 5 v 4 6 v e = 25 c = 13.5 v i j v t aed01945 q v
tle 4271 data sheet rev. 2.1 17 2000-02-14 inhibit current consumptions i e versus temperature t j switching voltage v du and v dwl versus temperature t j inhibit voltages v e versus temperature t j -40 0 0 120 80 40 t j a 14 aed01946 160 i e m 2 4 6 8 10 12 i e, high i e, on i e, off du 40 -40 0 0 v v v v i 160 c 80 120 t j aed01948 = 13.5 v 1.2 0.8 0.4 1.6 2.4 2.0 dwl v 3 2 1 40 -40 0 0 4 v 6 5 e 160 c 80 120 aed01947 j t v v e, on e, off v
tle 4271 data sheet rev. 2.1 18 2000-02-14 charge current i d and discharge current i dis versus temperature t j watchdog pulse time t w versus temperature t j 80 8 -40 8 2 6 4 40 0 i d a 10 12 i m 14 16 160 120 c t j = 13.5 v aed01949 i v d v = 1 v dis i 80 40 -40 0 10 30 20 40 0 50 60 70 80 160 120 c t j = 13.5 v aed01950 i c d v = 100 nf ms w t
tle 4271 data sheet rev. 2.1 19 2000-02-14 package outlines typical 0.1 1.27 4.4 9.25 0.2 0.05 1) all metal surfaces tin plated, except area of cut. 2.4 0.5 0.1 0.3 8.6 10.2 0.3 0.4 3.9 0.4 8.4 3.7 0.3 a a 0.25 m 9.8 0.15 2.8 1) 15.65 0.3 13.4 0...0.15 1.27 0.6 0.1 c 0.2 17 0.3 8.5 1) 9.9 0.2 7x -0.15 3.7 10 0.2 6x c 1.6 0.3 p-to220-7-11 (plastic transistor single outline package) gpt09083 sorts of packing package outlines for tubes, trays etc. are contained in our data book package information. dimensions in mm
tle 4271 data sheet rev. 2.1 20 2000-02-14 gpt09084 a b a 0.25 m typical 9.8 0.15 2.8 1) 15.65 0.3 13.4 0...0.15 1.27 0.6 0.1 0.1 1.27 4.4 b 9.25 0.2 0.05 1) all metal surfaces tin plated, except area of cut. c 0.2 17 0.3 8.5 1) 10 0.2 3.7 -0.15 c 2.4 0.5 0.1 13 0.5 0.5 11 7x p-to220-7-12 (plastic transistor single outline package) sorts of packing package outlines for tubes, trays etc. are contained in our data book package information. dimensions in mm
tle 4271 data sheet rev. 2.1 21 2000-02-14 a 8? max. b a 0.25 m 0.1 typical 9.8 0.15 0.2 10 8.5 1) 8 1) (15) 0.2 9.25 0.3 1 0...0.15 7x0.6 0.1 0.1 1.27 4.4 b 0.5 0.1 0.3 2.7 4.7 0.5 0.05 1) 0.1 all metal surfaces tin plated, except area of cut. 2.4 6x1.27 p-to263-7-1 (plastic transistor single outline package) gpt09114 sorts of packing package outlines for tubes, trays etc. are contained in our data book package information. dimensions in mm smd = surface mounted device
tle 4271 data sheet rev. 2.1 22 2000-02-14 edition 2000-02-14 published by infineon technologies ag, st.-martin-strasse 53, d-81541 mnchen, germany ? infineon technologies ag 2000. all rights reserved. attention please! the information herein is given to describe certain components and shall not be consid- ered as warranted characteristics. terms of delivery and rights to technical change reserved. we hereby disclaim any and all warranties, including but not limited to warranties of non- infringement, regarding circuits, descriptions and charts stated herein. in?neon technologies is an approved cecc manufacturer. information for further information on technology, deliv- ery terms and conditions and prices please contact your nearest in?neon technologies of?ce in germany or our in?neon technolo- gies representatives worldwide (see ad- dress list). warnings due to technical requirements components may contain dangerous substances. for in- formation on the types in question please contact your nearest in?neon technologies of?ce. in?neon technologies components may only be used in life-support devices or systems with the express written approval of in?neon technologies, if a failure of such components can reasonably be expected to cause the fail- ure of that life-support device or system, or to affect the safety or effectiveness of that de- vice or system. life support devices or sys- tems are intended to be implanted in the hu- man body, or to support and/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 endan- gered.

▲Up To Search▲

Price & Availability of TLE4271-G

	To Download TLE4271-G Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .