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1 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 800ma low dropout positive regulators adjustable and fixed 2.85v, 3.3v, 5v active terminator for scsi-2 bus dropout voltage (v in C v out ) n space saving sot-223 surface mount package n 3-terminal adjustable or fixed 2.85v, 3.3v, 5v n output current of 800ma n operates down to 1v dropout n guaranteed dropout voltage at multiple current levels n 0.2% line regulation max n 0.4% load regulation max the lt ? 1117 is a positive low dropout regulator designed to provide up to 800ma of output current. the device is available in an adjustable version and fixed output voltages of 2.85v, 3.3v and 5v. the 2.85v version is designed specifically to be used in active terminators for the scsi bus. all internal circuitry is designed to operate down to 1v input to output differential. dropout voltage is guaranteed at a maximum of 1.2v at 800ma, decreasing at lower load currents. on chip trimming adjusts the reference/output voltage to within 1%. current limit is also trimmed in order to minimize the stress on both the regulator and the power source circuitry under overload conditions. the low profile surface mount sot-223 package allows the device to be used in applications where space is limited. the lt1117 requires a minimum of 10 m f of output capacitance for stability. output capacitors of this size or larger are normally included in most regulator designs. unlike pnp type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the lt1117 flows into the load, increasing efficiency. n active scsi terminators n high efficiency linear regulators n post regulators for switching supplies n battery chargers n 5v to 3.3v linear regulators features descriptio u applicatio s u typical applicatio u , ltc and lt are registered trademarks of linear technology corporation. 18 to 27 lines lt1117 ?ta01 10 m f 110 w 110 w 110 w 110 w 4.75v to 5.25v 22 m f lt1117-2.85 in gnd out + + output current (ma) 0 0 dropout voltage (v) 0.2 0.4 0.6 0.8 1.0 1.4 100 400 600 800 lt1117 ?tpc01 1.2 200 300 500 700 t j = 25 c t j = 125 c indicates guaranteed test point 0 c t j 125 c ?0 c t j < 0 c
2 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 input voltage operating voltage lt1117, lt1117-3.3, lt1117-5 ...................... 15v lt1117-2.85 ................................................... 10v surge voltage lt1117, lt1117-3.3, lt1117-5 ...................... 20v order part number lt1117cst lt1117cst-2.85 lt1117cst-3.3 lt1117cst-5 lt1117ist lt1117ist-2.85 lt1117ist-3.3 lt1117ist-5 st part marking operating junctiontemperature range c grade ................................................. 0 c to 125 c i grade ............................................. C 40 c to 125 c storage temperature range ................. C 65 c to 150 c lead temperature ................... (see soldering methods) t j max = 125 c, q jc = 15 c/w front view tab is v out in out adj/gnd st package 3-lead plastic sot-223 3 2 1 m package 3-lead plastic dd front view 3 2 1 in out adj/gnd tab is v out t j max = 125 c, q jc = 10 c/w 1117 11172 11173 11175 consult factory for military grade parts. absolute axi u rati gs w ww u package/order i for atio uu w (note 1) 1117i 11172i 11173i 11175i lt1117cm lt1117cm-2.85 lt1117cm-3.3 lt1117cm-5 1117 11172 11173 11175 order part number dd part marking parameter conditions min typ max units reference voltage lt1117 i out = 10ma, (v in C v out ) = 2v, t j = 25 c 1.238 1.250 1.262 v 10 i out 800ma, 1.4v (v in C v out ) 10v l 1.225 1.250 1.270 v output voltage lt1117-2.85 i out = 10ma, v in = 4.85v, t j = 25 c 2.820 2.850 2.880 v 0 i out 800ma, 4.25v v in 10v l 2.790 2.850 2.910 v 0 i out 500ma, v in = 3.95v l 2.790 2.850 2.910 v lt1117-3.3 i out = 10ma, v in = 5v, t j = 25 c 3.267 3.300 3.333 v 0 i out 800ma, 4.75v v in 10v l 3.235 3.300 3.365 v lt1117-5 i out = 10ma, v in = 7v, t j = 25 c 4.950 5.000 5.050 v 0 i out 800ma, 6.50v v in 12v l 4.900 5.000 5.100 v line regulation lt1117 i out = 10ma, 1.5v v in C v out 15v (note 2) l 0.035 0.2 % lt1117-2.85 i out = 0ma, 4.25v v in 10v (note 2) l 16 mv lt1117-3.3 i out = 0ma, 4.75v v in 15v (note 2) l 16 mv lt1117-5 i out = 0ma, 6.5v v in 15v (note 2) l 110 mv electrical characteristics the l denotes specifications which apply over the full operating temperature range, otherwise specifications are at t j = 25 c.
3 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 parameter conditions min typ max units load regulation lt1117 (v in C v out ) = 3v, 10ma i out 800ma (note 2) l 0.1 0.4 % lt1117-2.85 v in = 4.25v, 0 i out 800ma (note 2) l 110 mv lt1117-3.3 v in = 4.75v, 0 i out 800ma (note 2) l 110 mv lt1117-5 v in = 6.5v, 0 i out 800ma (note 2) l 115 mv dropout voltage i out = 100ma, 0 c t j 125 c (note 3) 1.00 1.10 v i out = 500ma, 0 c t j 125 c (note 3) 1.05 1.15 v i out = 800ma, 0 c t j 125 c (note 3) 1.10 1.20 v i out = 100ma, C 40 c t j < 0 c (note 3) 1.00 1.20 v i out = 500ma, C 40 c t j < 0 c (note 3) 1.05 1.25 v i out = 800ma, C 40 c t j < 0 c (note 3) 1.10 1.30 v current limit (v in C v out ) = 5v, t j = 25 c, 800 950 1200 ma minimum load current lt1117 (v in C v out ) = 15v (note 4) l 1.7 5 ma quiescent current lt1117-2.85 v in 10v l 510 ma lt1117-3.3 v in 15v l 510 ma lt1117-5 v in 15v l 510 ma thermal regulation t a = 25 c, 30ms pulse 0.01 0.1 %/w ripple rejection f ripple = 120hz, (v in C v out ) = 3v, v ripple = 1v p-p l 60 75 db adjust pin current l 55 120 m a adjust pin current change 10ma i out 800ma, 1.4v (v in C v out ) 10v l 0.2 5 m a temperature stability 0.5 % long term stability t a = 125 c, 1000hrs 0.3 % rms output noise (% of v out ), 10hz f 10khz 0.003 % thermal resistance (junction-to-case, at tab) 15 c/w e lectr ic al c c hara terist ics note 1: absolute maximum ratings are those values beyond which the life to the device may be imparied. note 2: see thermal regulation specification for changes in output voltage due to heating effects. load regulation and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. note 3: dropout voltage is specified over the full output current range of the device. dropout voltage is defined as the minimum input/output differential measured at the specified output current. test points and limits are also shown on the dropout voltage curve. note 4: minimum load current is defined as the minimum output current required to maintain regulation. cc hara terist ics uw a t y p i ca lper f o r c e minimum operating current (adjustable device) short-circuit current load regulation the l denotes specifications which apply over the full operating temperature range, otherwise specifications are at t j = 25 c. input/output differential (v) 0 0 minimum operating current (ma) 1 3 4 10 15 20 lt1117 ?tpc02 5 t j = 25 c t j = 125 c t j = 55 c 2 input/output differential (v) 0 0 short circuit current (a) 0.25 0.50 0.75 1.25 10 15 lt1117 ?tpc03 5 1.00 t j = 25 c t j = 125 c temperature ( c) ?0 0.20 output voltage deviation (%) 0.15 0.10 0.05 0.10 50 75 125 lt1117 ?tpc04 0 0.05 0 25 25 100 d i load = 800ma
4 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 cc hara terist ics uw a t y p i ca lper f o r c e lt1117-5 line transient response lt1117-2.8 line transient response lt1117 ripple rejection lt1117 ripple rejection vs current temperature stability lt1117-2.85 lt1117-5 adjust pin current load transient response load transient response temperature ( c) ?0 0 ajust pin current ( m a) 20 50 100 0 50 100 150 lt1117 ?tpc08 80 ?5 25 75 125 10 30 40 60 70 90 time ( m s) 0 0.5 load current (a) 0.3 20 50 70 100 lt1117 ?tpc09 0.1 10 30 60 80 0 0.5 0.2 0 0.2 0.1 40 90 ouput voltage deviation (v) c in = 10 m f c out = 10 m f tantalum v in = 4.25v preload = 0.1a time ( m s) 0 0.5 load current (a) 0.3 20 50 70 100 lt1117 ?tpc10 0.1 10 30 60 80 0 0.5 0.2 0 0.2 0.1 40 90 ouput voltage deviation (v) c in = 10 m f c out = 10 m f tantalum v in = 6.5v preload = 0.1a time ( m s) 0 3.25 input voltage (v) 60 40 100 140 200 lt1117 ?tpc11 20 20 60 120 160 4.25 5.25 ?0 0 40 ?0 80 180 ouput voltage deviation (mv) c in = 1 m f c out = 10 m f tantalum i out = 0.1a time ( m s) 0 5.50 input voltage (v) 60 40 100 140 200 lt1117 ?tpc12 20 20 60 120 160 6.50 7.50 ?0 0 40 ?0 80 180 ouput voltage deviation (mv) c in = 1 m f c out = 10 m f tantalum i out = 0.1a frequency (hz) 20 ripple rejection (db) 40 60 80 100 10 1k 10k 100k lt1117 ?tpc05 0 100 90 70 50 30 10 c adj = 200 m f at f < 60hz c adj = 25 m f at f > 60hz i out = 0.5a (v in ?v out) 3 v dropout v ripple 3v p-p v ripple 0.5v p-p (v in ?v out) 3 3v output current (a) 0 0 ripple rejection (db) 20 30 50 80 100 0.2 0.4 0.6 0.8 lt1117 ?tpc06 10 40 60 70 90 v out = 5v c adj = 25 m f c out = 25 m f v ripple 3v p-p f ripple = 120hz f ripple = 20khz v ripple 0.5v p-p temperature ( c) ?0 ?.0 output voltage change (%) ?.0 0 2.0 0 50 100 150 lt1117 ?tpc07 1.0 ?5 25 75 125
5 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 the lt1117 family of 3-terminal regulators are easy to use. they are protected against short circuit and thermal overloads. thermal protection circuitry will shut down the regulator should the junction temperature exceed 165 c at the sense point. these regulators are pin compatible with older 3-terminal adjustable regulators, offer lower dropout voltage and more precise reference tolerance. reference stability over temperature is improved over older types of regulators. stability the lt1117 family of regulators requires an output ca- pacitor as part of the device frequency compensation. a minimum of 10 m f of tantalum or 50 m f of aluminum electrolytic is required. the esr of the output capacitor should be less than 0.5 w . surface mount tantalum capaci- tors, which have very low esr, are available from several manufacturers. when using the lt1117 adjustable device the adjust terminal can be bypassed to improve ripple rejection. when the adjust terminal is bypassed the required value of the output capacitor increases. the device will require an output capacitor of 22 m f tantalum or 150 m f aluminum electrolytic when the adjust pin is bypassed. normally, capacitor values on the order of 100 m f are used in the output of many regulators to ensure good load transient response with large load current changes. out- put capacitance can be increased without limit and larger values of output capacitance further improve stability and transient response. protection diodes in normal operation, the lt1117 family does not need any protection diodes. older adjustable regulators required protection diodes between the adjust pin and the output and between the output and input to prevent over stress- ing the die. the internal current paths on the lt1117 adjust pin are limited by internal resistors. therefore, even with capacitors on the adjust pin, no protection diode is needed to ensure device safety under short-circuit conditions. lt1117 ?bd01 + thermal limit out in adj gnd for fixed voltage device block diagra w applicatio hi ts uu
6 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 the adjust pin can be driven, on a transient basis, 25v with respect to the output without any device degradation. diodes between input and output are not usually needed. the internal diode between the output and input pins of the device can withstand microsecond surge currents of 10a to 20a. normal power supply cycling can not generate currents of this magnitude. only with extremely large output capacitors, such as 1000 m f and larger, and with the input pin instantaneously shorted to ground can damage occur. a crowbar circuit at the input of the lt1117 in combination with a large output capacitor could generate currents large enough to cause damage. in this case a diode from output to input is recommended, as shown in figure 1. to set the overall output voltage. normally this current is chosen to be the specified minimum load current of 10ma. because i adj is very small and constant when compared to the current through r1, it represents a small error and can usually be ignored. for fixed voltage devices r1 and r2 are included in the device. load regulation because the lt1117 is a 3-terminal device, it is not possible to provide true remote load sensing. load regu- lation will be limited by the resistance of the wire connect- ing the regulator to the load. the data sheet specification for load regulation is measured at the output pin of the device. negative side sensing is a true kelvin connection, with the bottom of the output divider returned to the negative side of the load. although it may not be immedi- ately obvious, best load regulation is obtained when the top of the resistor divider (r1) is returned directly to the output pin of the device, not to the load. this is illustrated in figure 3. connected as shown, r p is not multiplied by the divider ratio. if r1 were connected to the load, the effective resistance between the regulator and the load would be: r rr r r pp + = 21 1 , parasitic line resistance figure 2. basic adjustable regulator output voltage the lt1117 develops a 1.25v reference voltage between the output and the adjust terminal (see figure 2). by placing a resistor between these two terminals, a constant current is caused to flow through r1 and down through r2 figure 1 lt1117 ?ta02 + + d1 1n4002 (optional) c adj 10 m f r2 r1 c out 150 m f v out v in lt1117 in adj out lt1117 ?ta03 r2 r1 v out v in v ref i adj 50 m a lt1117 in adj out v out = v ref 1 + + i adj r2 r2 r1 () + figure 3. connections for best load regulation lt1117 ?ta04 r2 r1 v in r p parasitic line resistance r l connect r1 to case connect r2 to load lt1117 in adj out for fixed voltage devices the top of r1 is internally kelvin connected, and the ground pin can be used for negative side sensing. applicatio hi ts uu
7 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 thermal considerations lt1117 series regulators have internal thermal limiting circuitry designed to protect the device during overload conditions. for continuous normal load conditions how- ever, the maximum junction temperature rating of 125 c must not be exceeded. it is important to give careful consideration to all sources of thermal resistance from junction to ambient. for the sot-223 package, which is designed to be surface mounted, additional heat sources mounted near the de- vice must also be considered. heat sinking is accom- plished using the heat spreading capability of the pc board and its copper traces. the thermal resistance of the lt1117 is 15 c/w from the junction to the tab. thermal resistances from tab to ambient can be as low as 30 c/w. the total thermal resistance from junction to ambient can be as low as 45 c/w. this requires a reasonable sized pc board with at least one layer of copper to spread the heat across the board and couple it into the surrounding air. experiments have shown that the heat spreading copper layer does not need to be electrically connected to the tab of the device. the pc material can be very effective at transmitting heat between the pad area, attached to the tab of the device, and a ground plane layer either inside or on the opposite side of the board. although the actual thermal resistance of the pc material is high, the length/area ratio of the thermal resistor between layers is small. the data in table 1 was taken using 1/16" fr-4 board with 1oz. copper foil. it can be used as a rough guideline in estimating thermal resistance. table 1. copper area thermal resistance topside* backside board area (junction-to-ambient) 2500 sq. mm 2500 sq. mm 2500 sq. mm 45 c/w 1000 sq. mm 2500 sq. mm 2500 sq. mm 45 c/w 225 sq. mm 2500 sq. mm 2500 sq. mm 53 c/w 100 sq. mm 2500 sq. mm 2500 sq. mm 59 c/w 1000 sq. mm 1000 sq. mm 1000 sq. mm 52 c/w 1000 sq. mm 0 1000 sq. mm 55 c/w * tab of device attached to topside copper the thermal resistance for each application will be affected by thermal interactions with other components on the board. some experimentation will be necessary to deter- mine the actual value. the power dissipation of the lt1117 is equal to: p d = ( v in C v out )( i out ) maximum junction temperature will be equal to: t j =t a(max) + p d (thermal resistance (junction-to- ambient)) maximum junction temperature must not exceed 125 c. ripple rejection the curves for ripple rejection were generated using an adjustable device with the adjust pin bypassed. these curves will hold true for all values of output voltage. for proper bypassing, and ripple rejection approaching the values shown, the impedance of the adjust pin capacitor, at the ripple frequency, should be < r1. r1 is normally in the range of 100 w to 200 w . the size of the required adjust pin capacitor is a function of the input ripple frequency. at 120hz, with r1 = 100 w , the adjust pin capacitor should be >13 m f. at 10khz only 0.16 m f is needed. for fixed voltage devices, and adjustable devices without an adjust pin capacitor, the output ripple will increase as the ratio of the output voltage to the reference voltage (v out /v ref ). for example, with the output voltage equal to 5v, the output ripple will be increased by the ratio of 5v/1.25v. it will increase by a factor of four. ripple rejection will be degraded by 12db from the value shown on the curve. applicatio hi ts uu
8 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 1.2v to 10v adjustable regulator 5v regulator with shutdown remote sensing adjusting output voltage of fixed regulators regulator with reference lt1117 ?ta05 + r1 121 w c2 100 m f v out ? v in v out = 1.25v 1 + r2 r1 + c1* 10 m f r2 1k needed if device is far from filter capacitors * ? lt1117 in adj out () 121 w 1% 100 m f 5v v in 10 m f 365 w 1% 1k 1k + + ttl lt1117 ?ta06 lt1117 in adj out 2n3904 lt1117 ?ta07 121 w v in r p (max. drop 300mv) 10 m f + + + + 100 m f 365 w 100pf 5 m f 25 w 1k 25 w v in r l 7 2 3 4 8 1 6 lm301a output 5v return return lt1117 in adj out 100 m f 5v to 10v v in > 12v 10 m f lt1117 ?ta05 10 m f* 1k * optional improves ripple rejection lt1117-5 in gnd out + + + 100 m f 10v v in > 11.5v 10 m f lt1117 ?ta06 5v out lt1029 lt1117-5 in gnd out + + typical applicatio s u
9 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 battery charger battery backed up regulated supply improving ripple rejection automatic light control high efficiency dual supply lt1117 ?ta07 v out v in r1 if r s 1.25v adj lt1117 in out v out ?1.25v 1 + r2 r1 if = ? s 1 + r2 r1 1 = ? s 1 + r2 r1 () ? if ? v out () () 100 m f 5.2v line 5.0v battery v in 10 m f lt1117 ?ta08 50 w select for charge rate 6.5v 10 m f lt1117-5 in gnd out lt1117-5 in gnd out + + + r1 121 w 1% v in 3 16.5v v in 10 m f c1 10 m f 150 m f r2 365 w 1% * c1 improves ripple rejection. x c should be ? r1 at ripple frequency lt1117 ?ta09 lt1117 in adj out + + 1.2k 10 m f 100 m f lt1117 ?ta10 lt1117 in adj out + +5v 0.5a +v in 10 m f lt1117 ?ta11 1n4002 470 m f 10 m f 1n4002 470 m f mur410 mur410 mur410 switching regulator 470 m f 3.3v output (typical) ?v 0.5a feedback path lt1117-5 in gnd out lt1117-5 in gnd out + + + + + typical applicatio s u
10 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 high efficiency dual linear supply low dropout negative supply 100 m f lt1117 ?ta12 d2 1n4002 1000 m f mbr360 ?v 0.5a + 2.4k 510k 1k 30k 20k* 30.1k* lt1004-2.5 10k 4700 m f mda201 + (heat sink) 2n6667 (darlington) l1 285 m h 1/2 lt1018 100 m f 1000 m f mbr360 + 2.4k 510k 1k 30k 20k* 30.1k* lt1004-2.5 10k 4700 m f mda201 + (heat sink) 2n6667 (darlington) l1 285 m h 1/2 lt1018 d11 1n4002 5v 0.5a stancor p-8685 130vac to 90vac * mda l1 = 1 % film resistors = motorola = pulse engineering, inc. #pe-92106 v + v ? lt1117-5 in gnd out lt1117-5 in gnd out q1 + + + + + + 100 m f v in lt1117 ?ta13 v out = 5v 10 m f floating input lt1117-5 in gnd out + + typical applicatio s u
11 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. the sot-223 is manufactured with gull wing leadform for surface mount applications. the leads and heat sink are solder plated and allow easy soldering using nonactive or mildly active fluxes. the package is constructed with three leads exiting one side of the package and one heat sink exiting the other side, and the die attached to the heat sink internally. the recommended methods of soldering sot-223 are: vapor phase reflow and infrared reflow with preheat of component to within 65 c of the solder temperature. hand soldering and wave soldering are not recommended since these methods can easily damage the part with excessive thermal gradients across the package. care must be exercised during surface mount to minimize large (> 30 c per second) thermal shock to the package. lt1117 ?ta15 dimensions in inches (millimeters) unless otherwise noted. u package descriptio m package 3-lead plastic dd pak (ltc dwg # 05-08-1460) m (dd3) 1098 0.050 (1.270) bsc 0.143 +0.012 0.020 () 3.632 +0.305 0.508 0.090 ?0.110 (2.286 ?2.794) 0.013 ?0.023 (0.330 ?0.584) 0.095 ?0.115 (2.413 ?2.921) 0.004 +0.008 0.004 () 0.102 +0.203 0.102 0.050 0.012 (1.270 0.305) 0.059 (1.499) typ 0.045 ?0.055 (1.143 ?1.397) 0.165 ?0.180 (4.191 ?4.572) 0.330 ?0.370 (8.382 ?9.398) 0.060 (1.524) typ 0.390 ?0.415 (9.906 ?10.541) 15 typ 0.300 (7.620) 0.075 (1.905) 0.183 (4.648) 0.060 (1.524) 0.060 (1.524) 0.256 (6.502) bottom view of dd pak hatched area is solder plated copper heat sink solderi g ethods wu 0.114 ?0.124 (2.90 ?3.15) 0.248 ?0.264 (6.30 ?6.71) 0.130 ?0.146 (3.30 ?3.71) 0.264 ?0.287 (6.70 ?7.30) 0.0905 (2.30) nom 0.033 ?0.041 (0.84 ?1.04) 0.181 (4.60) nom 0.024 ?0.033 (0.60 ?0.84) 0.071 (1.80) max 10 max 0.012 (0.31) min 0.0008 ?0.0040 (0.0203 ?0.1016) 10 ?16 0.010 ?0.014 (0.25 ?0.36) 10 ?16 st3 (sot-233) 1298 st package 3-lead plastic sot-223 (ltc dwg # 05-08-1630)
12 lt1117/lt1117-2.85 lt1117-3.3/lt1117-5 ? linear technology corporation 1993 1117fc lt/tp 0500 2k rev c ? printed in usa high efficiency regulator 2k output adjust 240 w 100 m f 470 w 1n914 4n28 + 1n914 1k mr1122 10k 28v input 1mh 10,000 m f 1m 10k 10k lt1011 lt1117 ?ta14 28v output 28v lt1117 in adj out + + typical applicatio u linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 l fax: (408) 434-0507 l www.linear-tech.com related parts part number description comments lt1120 125ma low dropout regulator with 20 m a i q includes 2.5v reference and comparator lt1121 150ma micropower low dropout regulator 30 m a i q , sot-223 package lt1129 700ma micropower low dropout regulator 50 m a quiescent current lt1175 500ma negative low dropout micropower regulator 45 m a i q , 0.26v dropout voltage, sot-223 package lt1374 4.5a, 500khz step-down converter 4.5a, 0.07 w internal switch, so-8 package lt1521 300ma low dropout micropower regulator with shutdown 15 m a i q , reverse battery protection lt1573 ultrafast tm transient response low dropout regulator drives external pnp lt1575 ultrafast transient response low dropout regulator drives external n-channel mosfet lt1735 synchronous step-down converter high efficiency, opti-loop tm compensation lt1761 series 100ma, low noise, low dropout micropower regulators in sot-23 20 m a quiescent current, 20 m v rms noise, sot-23 package lt1762 series 150ma, low noise, ldo micropower regulators 25 m a quiescent current, 20 m v rms noise, msop package lt1763 series 500ma, low noise, ldo micropower regulators 30 m a quiescent current, 20 m v rms noise, so-8 package lt1764 series 3a, low noise, fast transient response ldo 40 m v rms noise, dd and to-220 packages lt1962 300ma, low noise, ldo micropower regulator 20 m v rms noise, msop package lt1963 1.5a, low noise, fast transient response ldo 40 m v rms noise, sot-223 package ultrafast and opt-loop are trademarks of linear technology corporation.

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