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p-dso-14-8 5-v low-drop voltage regulator tle 4263 data sheet rev. 2.4 1 2001-01-17 features output voltage tolerance ? 2% 200 ma output current capability low-drop voltage very low standby current consumption overtemperature protection reverse polarity protection short-circuit proof adjustable reset threshold watchdog wide temperature range suitable for use in automotive electronics smd type functional description tle 4263 is a 5-v low-drop voltage regulator in a p-dso-14-8 smd package. the maximum input voltage is 45 v. the maximum output current is more than 200 ma. the ic is short-circuit proof and incorporates temperature protection which turns off the ic at overtemperature. the ic regulates an input voltage v i in the range of 6 v < v i <45vto v q,nom =5.0v.a reset signal is generated for an output voltage of v q,rt < 4.5 v. this voltage threshold can be decreased to 3.5 v by external connection of a voltage divider. the reset delay can be set externally by a capacitor. the integrated watchdog logic supervises the connected microcontroller. the ic can be switched off via the inhibit input, which causes the current consumption to drop from 900 a to typical 0 a. type ordering code package tle 4263 gm q67006-a9357-a201k5 p-dso-14-8
tle 4263 data sheet rev. 2.4 2 2001-01-17 choosing external components the input capacitor c i is necessary for compensation of line influences. using a resistor of approx. 1 in series with c i , the oscillating circuit consisting of input inductivity and input capacitance can be damped. the output capacitor is necessary for the stability of the regulating circuit. stability is guaranteed at values 22 f and an esr of ? 3 within the operating temperature range. for small tolerances of the reset delay the spread of the capacitance of the delay capacitor and its temperature coefficient should be noted. figure 1 pin configuration (top view) tle 4263 gm 10 9 1 2 3 4 5 6 7 14 13 12 11 aep03067 n.c. 8 gnd gnd gnd gnd gnd gnd d w radj ro q inh
tle 4263 data sheet rev. 2.4 3 2001-01-17 pin definitions and functions pin (p-dso-14-4) symbol function 1ro reset output; open-collector output connected to the output via a resistor of 30 k . 2 n.c. not connected 3-5, 10 - 12 gnd ground 6d reset delay; connected to ground with a capacitor. 7radj reset threshold; to adjust the switching threshold connect a voltage divider (output to gnd) to the pin. if this input is connected to gnd, reset is triggered at an output voltage of 4.5 v. 8w watchdog; rising edge triggered input for monitoring a microcontroller. 9q 5-v output voltage; block to ground with a capacitor, c 22 f, esr ? 3 at 13 i input voltage; block to ground directly at the ic with a ceramic capacitor. 14 inh inhibit; ttl-compatible, low-active input.
tle 4263 data sheet rev. 2.4 4 2001-01-17 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 the series transistor via a buffer. saturation control as a function of the load current prevents any over-saturation of the power element. if the externally scaled down output voltage at the reset threshold input drops below 1.35 v, the external reset delay capacitor is discharged by the reset generator. when the voltage of the capacitor reaches the lower threshold v drl , a reset signal occurs at the reset output and is held until the upper threshold v du is exceeded. if the reset threshold input is connected to gnd, reset is triggered at an output voltage of typ. 4.65 v. a connected microcontroller will be monitored through the watchdog logic. in case of missing pulses at pin w, the reset output is set to low. the pulse sequence time can be set in a wide range with the reset delay capacitor. the ic can be switched at the ttl-compatible, low-active inhibit input. the ic also incorporates a number of internal circuits for protection against: overload overtemperature reverse polarity figure 2 block diagram input aeb03068 inh gnd output d ro radj reset delay reset output reset threshold watchdog w temperature sensor generator reset reference bandgap adjustment buffer control amplifier saturation control and protection circuit inhibit q gnd
tle 4263 data sheet rev. 2.4 5 2001-01-17 absolute maximum ratings parameter symbol limit values unit remarks min. max. input i input voltage input current v i i i ?42 ? 45 ? v ? ? internally limited reset output ro voltage current v r i r ?0.3 ? 42 ? v ? ? internally limited reset threshold radj voltage v radj ?0.3 6 v ? reset delay d voltage current v d i d ?0.3 ? 42 ? v ? ? internally limited output q voltage current v q i q ?0.3 ? 7 ? v ? ? internally limited inhibit inh voltage v inh ?42 45 v ? watchdog w voltage v w ?0.3 6 v ? ground gnd current i gnd ?0.5 ? a ?
tle 4263 data sheet rev. 2.4 6 2001-01-17 temperature junction temperature storage temperature t j t stg ? ?50 150 150 ? c ? c ? ? operating range input voltage v i ?45v? junction temperature t j ? 40 150 ? c? thermal resistance junction-ambient junction-pin r thj-a r thj-p ? ? 112 32 k/w k/w 1) 2) 1) package mounted on pcb 80 ? 80 ? 1.5mm 3 ;35 cu; 5 sn; footprint only; zero airflow. 2) measured to pin 4. absolute maximum ratings (cont?d) parameter symbol limit values unit remarks min. max.
tle 4263 data sheet rev. 2.4 7 2001-01-17 characteristics v i = 13.5 v; ? 40 ? c< t j < 125 ? c; v inh > 3.5 v; (unless specified otherwise) parameter symbol limit values unit test condition min. typ. max. normal operation output voltage v q 4.90 5.00 5.10 v 5 ma ? i q ? 150 ma; 6v ? v i ? 28 v output voltage v q 4.90 5.00 5.10 v 6 v ? v i ? 32 v; i q = 100 ma; t j = 100 ? c output current i q 200 250 ? ma 1) current consumption; i q = i i ? i q i q i q i q i q ? ? ? ? 0 900 10 15 50 1300 18 23 a a ma ma v inh =0 i q =0ma i q = 150 ma i q = 150 ma ; v i =4.5v drop voltage v dr ? 0.35 0.50 v i q = 150 ma 1) load regulation v q,lo ??25mv i q = 5 ma to 150 ma line regulation v q.li ?325mv v i =6vto28v; i q = 150 ma power supply ripple rejection psrr ? 54 ? db f r = 100 hz; v r =0.5 v pp reset generator switching threshold v q,rt 4.5 4.65 4.8 v v radj =0v reset adjust threshold v radj,th 1.26 1.35 1.44 v v q >3.5v reset low voltage v ro,l ? 0.10 0.40 v i ro =1ma note: the reset output is low within the range v q =1vto v q,rt 1) drop voltage = v i ? v q (measured when the output voltage has dropped 100 mv from the nominal value obtained at 6 v input)
tle 4263 data sheet rev. 2.4 8 2001-01-17 saturation voltage v d,sat ? 50 100 mv v q < v r,th upper timing threshold v du 1.45 1.70 2.05 v ? lower reset timing threshold v drl 0.20 0.35 0.55 v ? charge current i d,ch 40 60 85 a? reset delay time t rd 1.3 2.8 4.1 ms c d = 100 nf reset reaction time t rr 0.5 1.2 4 s c d = 100 nf watchdog discharge current i d,wd 4.40 6.25 9.10 a v d =1.0v upper timing threshold v du 1.45 1.70 2.05 v ? lower timing threshold v dwl 0.20 0.35 0.55 v ? watchdog trigger time t wi,tr 16 22.5 27 ms c d = 100 nf inhibit switching voltage v inh,on 3.6 ? ? v ic turned on turn-off voltage v inh,off ? ? 0.8 v ic turned off input current i inh 51025 a v inh =5v note: the reset output is low within the range v q =1vto v q,rt characteristics (cont?d) v i = 13.5 v; ? 40 ? c< t j < 125 ? c; v inh > 3.5 v; (unless specified otherwise) parameter symbol limit values unit test condition min. typ. max.
tle 4263 data sheet rev. 2.4 9 2001-01-17 figure 3 application circuit figure 4 test circuit aes03069 22 f gnd d ro 470 nf inh 100 nf output kl 15 to mc input reset tle 4263g w watchdog from mc q radj 6 v...45 v 100 k ? 56 k ? aes03070 22 f q rd v radj ? 5.6 k d ro inh e 1000 f 470 nf v e d c v c gnd d, ch v ro q v v tle 4263g gnd w v w radj 100 nf q v r + psrr = 20 log v r q, r v ?
tle 4263 data sheet rev. 2.4 10 2001-01-17 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 rd ? i d,ch )/ v definitions: c d = delay capacitor t rd = reset delay time i d,ch = charge current, typical 60 a v = v du , typical 1.70 v v du = upper delay switching threshold at c d for reset delay time figure 5 time response, watchdog with high-frequency clock reset switching threshold the present default value is typ. 4.65 v. when using the tle 4263 the reset threshold can be set to 3.5 v < v q,rt < 4.6 v by connecting an external voltage divider to pin radj. the calculation can be easily done since the reset adjust input current can be neglected. if this feature is not needed, the pin has to be connected to gnd. v q, rt = (1+r1/r2) ? v radj,th aet03066 i v v q q, rt v v d du v v drl ro v rd t t rr < rr t v d t d = d, ch i d c power-on reset over- temperature at input voltage drop under- voltage spike secondary bounce load t t t t
tle 4263 data sheet rev. 2.4 11 2001-01-17 definitions: v q,rt = reset threshold v radj, th = comparator reference voltage, typical 1.35 v watchdog timing the frequency of the watchdog pulses has to be higher than the minimum pulse sequence which is set by the external reset delay capacitor c d . calculation can be done according to the formulas given in figure 6 . figure 6 timing of the watchdog functionreset aed03099 w v v v q d v v ro v du - v dwl () ( d, wc + d, wd ) d, wc x d, wd t wd, p = wd, l t wd, p t wi, tr t wd, l t = v v ( du - dwl ) d, wc t = v v ( du - dwl ) d, wd du v v dwl wi, tr c d ; ; d c d c t t t t t
tle 4263 data sheet rev. 2.4 12 2001-01-17 reset switching threshold versus output voltage reset switching threshold versus temperature timing threshold voltage v du and v drl versus temperature current consumption of inhibit versus temperature 0.8 0.4 0.6 0.2 1 0 2 0 1.6 1.2 1.4 1.0 radj v v v 4 3 5 v q aed01098 v = 13.5 v aed01088 -40 04080 120 ?c 160 0 j t radj v 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 v aed03062 -40 0 i v = 13.5 v 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 v 04080 120 160 ? c v t j v drl du v aed03063 v inh = 5 v a inh i 80 -40 4 2 0 6 8 40 0 10 12 14 16 160 ? c 120 t j
tle 4263 data sheet rev. 2.4 13 2001-01-17 drop voltage versus outputcurrent current consumption versus input voltage current consumption versus output current output voltage versus input voltage aed03060 0 0 q i 50 100 150 200 300 ma 100 200 300 400 500 600 700 800 mv v dr j t = 125 ? c 25 ? c 15 10 5 20 010 0 20 ma 30 25 q = 25 r l 50 v 30 40 v aed01096 ? aed03061 0 0 q i q i 50 100 150 200 300 i v = 13.5 v ma 4 8 12 16 20 24 28 32 ma r 6 4 2 0 4 0 2 8 12 10 q v v 10 v 68 v aed01097 = 25 l ?
tle 4263 data sheet rev. 2.4 14 2001-01-17 charge current and discharge current versus temperature pulse time versus temperature output voltage versus temperature output current versus input voltage 40 20 30 10 0 -40 40 0 80 60 70 50 a c 120 80 160 t j aed03064 = 13.5 v = 1.5 v v v d d, ch d, dis 20 10 15 5 0 -40 40 0 40 30 35 25 wi,tr t c 120 80 160 t j aed03065 ms v = 13.5 v = 100 nf c d aed01090 -40 04080 120 ? c 160 4.6 j t q v v i = 13.5 v 4.7 4.8 4.9 5.0 5.1 v 5.2 t 10 0 0 50 100 20 250 300 q ma 200 150 v 40 30 v 50 = 25 c j aed01091
tle 4263 data sheet rev. 2.4 15 2001-01-17 package outlines sorts of packing package outlines for tubes, trays etc. are contained in our data book package information . dimensions in mm smd = surface mounted device p-dso-14-8 (plastic dual small outline) gps09222
tle 4263 data sheet rev. 2.4 16 2001-01-17
tle 4263 data sheet rev. 2.4 17 2001-01-17
tle 4263 data sheet rev. 2.4 18 2001-01-17 edition 2001-01-17 published by infineon technologies ag, st.-martin-strasse 53, d-81541 mnchen ? infineon technologies ag1999. 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. infineon technologies is an approved cecc manufacturer. information for further information on technology, deliv- ery terms and conditions and prices please contact your nearest infineon technologies office in germany or our infineon 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 infineon technologies office. infineon technologies components may only be used in life-support devices or systems with the express written approval of infineon 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 endangered.

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