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1 lt3014b 3014bf , ltc and lt are registered trademarks of linear technology corporation. thinsot is a trademark of linear technology corporation. all other trademarks are the property of their respective owners. protected by u.s. patents including 6118263, 6144250. in lt3014b 1 f v in 5.4v to 80v out adj gnd 3014 ta01 v out 5v 20ma 0.47 f 3.92m 1.27m 400 350 300 250 200 150 100 50 0 3014 ta02 output current (ma) dropout voltage (mv) 0 4 10 12 2 6 8 14161820 wide input voltage range: 3v to 80v low quiescent current: 7 a low dropout voltage: 350mv output current: 20ma lt3014bhv survives 100v transients (2ms) no protection diodes needed adjustable output from 1.22v to 60v stable with 0.47 f output capacitor stable with aluminum, tantalum or ceramic capacitors reverse-battery protection no reverse current flow from output thermal limiting available in 5-lead thinsot tm and 8-lead dfn packages 20ma, 3v to 80v low dropout micropower linear regulator 5v supply dropout voltage the lt ? 3014b is a high voltage, micropower low dropout linear regulator. the device is capable of supplying 20ma of output current with a dropout voltage of 350mv. de- signed for use in battery-powered or high voltage sys- tems, the low quiescent current (7 a operating) makes the lt3014b an ideal choice. quiescent current is also well controlled in dropout. other features of the lt3014b include the ability to oper- ate with very small output capacitors. the regulators are stable with only 0.47 f on the output while most older devices require between 10 f and 100 f for stability. small ceramic capacitors can be used without the neces- sary addition of esr as is common with other regulators. internal protection circuitry includes reverse-battery pro- tection, current limiting, thermal limiting and reverse current protection. the device is available as an adjustable device with a 1.22v reference voltage. the lt3014b regulator is available in the 5-lead thinsot and 8-lead dfn packages. low current high voltage regulators regulator for battery-powered systems telecom applications automotive applications features descriptio u applicatio s u typical applicatio u
2 lt3014b 3014bf order part number dd part marking consult ltc marketing for parts specified with wider operating temperature ranges. t jmax = 125 c, ja = 40 c/ w jc = 10 c/ w measured at pin 9. lt3014bedd lt3014bhvedd lchm lchp order part number t jmax = 125 c, ja = 150 c/ w jc = 25 c/ w measured at pin 2. see applications information section. s5 part marking lt3014bes5 lt3014bhves5 ltchk LTCHN (note 1) in pin voltage, operating ................................. 80v transient (2ms survival, lt3014bhv) ........... +100v out pin voltage ............................................... 60v in to out differential voltage ........................... 80v adj pin voltage .................................................. 7v output short-circuit duration ..................... indefinite absolute axi u rati gs w ww u package/order i for atio uu w electrical characteristics parameter conditions min typ max units minimum input voltage i load = 20ma 3 3.3 v adj pin voltage v in = 3.3v, i load = 100 a 1.200 1.220 1.240 v (notes 2, 3) 3.3v < v in < 80v, 100 a < i load < 20ma 1.180 1.220 1.260 v line regulation ? v in = 3.3v to 80v, i load = 100 a (note 2) 110mv load regulation v in = 3.3v, ? i load = 100 a to 20ma (note 2) 13 25 mv v in = 3.3v, ? i load = 100 a to 20ma 40 mv dropout voltage i load = 100 a 120 180 mv v in = v out(nominal) (notes 4, 5) i load = 100 a 250 mv i load = 1ma 200 270 mv i load = 1ma 360 mv i load = 10ma 300 350 mv i load = 10ma 450 mv i load = 20ma 350 410 mv i load = 20ma 570 mv gnd pin current i load = 0ma 720 a v in = v out(nominal) i load = 100 a 12 30 a (notes 4, 6) i load = 1ma 40 100 a i load = 10ma 250 450 a i load = 20ma 650 1000 a the denotes specifications which apply over the full operating temperature range, otherwise specifications are at t j = 25 c. storage temperature range thinsot package......................... C65 c to 150 c dfn package ............................... C65 c to 125 c operating junction temperature range (notes 3, 9, 10) ........................... C40 c to 125 c lead temperature, sot-23 (soldering, 10 sec) ..................................... 300 c 5 out 4 adj in 1 top view s5 package 5-lead plastic sot-23 gnd 2 nc 3 top view dd package 8-lead (3mm 3mm) plastic dfn exposed pad is gnd (pin 9) must be soldered to pcb 5 6 7 8 4 3 2 1 out adj nc gnd in nc nc nc 9 order options tape and reel: add #tr lead free: add #pbf lead free tape and reel: add #trpbf lead free part marking: http://www.linear.com/leadfree/
3 lt3014b 3014bf parameter conditions min typ max units output voltage noise c out = 0.47 f, i load = 20ma, bw = 10hz to 100khz 115 v rms adj pin bias current (note 7) 4 10 na ripple rejection v in = 7v(avg), v ripple = 0.5v p-p , f ripple = 120hz, i load = 20ma 60 70 db current limit v in = 7v, v out = 0v 70 ma v in = 3.3v, ? v out = C0.1v (note 2) 25 ma input reverse v in = C80v, v out = 0v 6ma leakage current reverse output current v out = 1.22v, v in < 1.22v (note 2) 2 4 a (note 8) electrical characteristics the denotes specifications which apply over the full operating temperature range, otherwise specifications are at t j = 25 c. note 1: stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. exposure to any absolute maximum rating condition for extended periods may affect device reliability and lifetime. note 2: the lt3014b is tested and specified for these conditions with the adj pin connected to the out pin. note 3: operating conditions are limited by maximum junction temperature. the regulated output voltage specification will not apply for all possible combinations of input voltage and output current. when operating at maximum input voltage, the output current range must be limited. when operating at maximum output current, the input voltage range must be limited. note 4: to satisfy requirements for minimum input voltage, the lt3014b is tested and specified for these conditions with an external resistor divider (249k bottom, 392k top) for an output voltage of 3.3v. the external resistor divider adds a 5 a dc load on the output. note 5: dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. in dropout, the output voltage is equal to (v in C v dropout ). note 6: gnd pin current is tested with v in = v out (nominal) and a current source load. this means the device is tested while operating in its dropout region. this is the worst-case gnd pin current. the gnd pin current decreases slightly at higher input voltages. note 7: adj pin bias current flows into the adj pin. note 8: reverse output current is tested with the in pin grounded and the out pin forced to the rated output voltage. this current flows into the out pin and out of the gnd pin. note 9: the lt3014be is guaranteed to meet performance specifications from 0 c to 125 c operating junction temperature. specifications over the C40 c to 125 c operating junction temperature range are assured by design, characterization and correlation with statistical process controls. note 10: this ic includes overtemperature protection that is intended to protect the device during momentary overload conditions. junction temperature will exceed 125 c when overtemperature protection is active. continuous operation above the specified maximum operating junction temperature may impair device reliability. typical perfor a ce characteristics uw output current (ma) dropout voltage (mv) 3014 g01 016 4 2 6 10 14 18 812 20 500 450 400 300 350 250 200 150 100 50 0 t j = 125 c t j = 25 c typical dropout voltage output current (ma) 0 dropout voltage (mv) 200 400 600 100 300 500 4 8 12 16 3014 g02 20 2 0 6 10 14 18 = test points t j 125 c t j 25 c temperature ( c) C50 0 dropout voltage (mv) 50 150 200 250 500 350 0 50 75 3014 g03 100 400 450 300 C25 25 100 125 i l = 20ma i l = 10ma i l = 1ma i l = 100 a guaranteed dropout voltage dropout voltage
4 lt3014b 3014bf output voltage (v) 0 reverse output current ( a) 30 40 50 8 3014 g15 20 10 25 35 45 15 5 0 2 1 4 3 67 9 5 10 t j = 25 c v in = 0v v out = v adj current flows into output pin adj pin esd clamp temperature ( c) C50 0 current limit (ma) 10 30 40 50 100 70 0 50 75 3014 g14 20 80 90 60 C25 25 100 125 v in = 7v v out = 0v input voltage (v) 0 current limit (ma) 16 3014 g13 4 28 6121418 10 20 70 40 20 10 0 80 60 50 30 v out = 0v t j = 25 c current limit reverse output current current limit temperature ( c) adj pin bias current (na) 25 3014 g12 C25 0 50 C50 75 100 125 14 12 10 8 6 4 2 0 adj pin bias current output current (ma) 0 gnd pin current ( a) 600 800 1000 16 3014 g08 400 200 500 700 900 300 100 0 4 2 8 6 12 14 18 10 20 v in = 3.3v t j = 25 c v out = 1.22v input voltage (v) 0 gnd pin current ( a) 600 800 1000 8 3014 g07 400 200 500 700 900 300 100 0 2 14 3679 510 t j = 25 c *for v out = 1.22v r l = 61 ? i l = 20ma* r l = 122 ? i l = 10ma* r l = 1.22k i l = 1ma* 08 2 13579 4 6 10 16 14 12 10 8 6 4 2 0 input voltage (v) quiescent current ( a) 3014 g06 t j = 25 c r l = v out = 1.22v quiescent current quiescent current adj pin voltage temperature ( c) C50 adj pin voltage (v) 1.235 25 3014 g05 1.220 1.210 C25 0 50 1.205 1.200 1.240 1.230 1.225 1.215 75 100 125 i l = 100 a gnd pin current vs i load gnd pin current temperature ( c) C50 quiescent current ( a) 14 25 3014 g04 8 4 C25 0 50 2 0 16 12 10 6 75 100 125 v in = 6v r l = i l = 0 typical perfor a ce characteristics uw
5 lt3014b 3014bf temperature ( c) C50 ripple rejection (db) 70 25 3014 g17 64 60 C25 0 50 58 56 72 68 66 62 75 100 125 v in = 7v + 0.5v p-p ripple at f = 120hz i l = 20ma typical perfor a ce characteristics uw reverse output current input ripple rejection input ripple rejection temperature ( c) C50 reverse output current ( a) 7 25 3014 g16 4 2 C25 0 50 1 0 8 6 5 3 75 100 125 v in = 0v v out = v adj = 1.22v frequency (hz) 10 ripple rejection (db) 100 1k 10k 100k 1m 3014 g18 70 40 20 10 0 80 60 50 30 v in = 7v + 50mv rms ripple i l = 20ma c out = 4.7 f c out = 0.47 f load regulation minimum input voltage output noise spectral density temperature ( c) C50 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 25 75 3014 g19 C25 0 50 100 125 minimum input voltage (v) i load = 20ma temperature ( c) C50 load regulation (mv) C5 25 3014 g20 C20 C30 C25 0 50 C35 C40 0 C10 C15 C25 75 100 125 ? i l = 100 a to 20ma v out = 1.22v frequency (hz) 0.1 output noise spectral density ( v/ hz) 1 10 1k 10k 100k 3014 g21 0.01 100 10 c out = 0.47 f i l = 20ma v out = 1.22v time ( s) 0 output voltage deviation (v) load current (ma) C0.02 0.02 800 3014 g23 4 C0.04 0 0.04 6 2 0 200 400 600 1000 v in = 7v v out = 5v c in = c out = 0.47 f ceramic ? i load = 1ma to 5ma 10hz to 100khz output noise v out 200 v/div c out = 0.47 f 1ms/div 3014 g22 i l = 20ma v out = 1.22v transient response
6 lt3014b 3014bf in lt3014b v in out adj gnd 3014 f01 v out r2 r1 + r2 r1 v out = 1.22v v adj = 1.22v i adj = 4na at 25 c output range = 1.22v to 60v + (i adj )(r2) 1 + () ? figure 1. adjustable operation in (pin 1/pin 8): input. power is supplied to the device through the in pin. a bypass capacitor is required on this pin if the device is more than six inches away from the main input filter capacitor. in general, the output impedance of a battery rises with frequency, so it is advisable to include a bypass capacitor in battery-powered circuits. a bypass capacitor in the range of 0.1 f to 10 f is sufficient. the lt3014b is designed to withstand reverse voltages on the in pin with respect to ground and the out pin. in the case of a reversed input, which can happen if a battery is plugged in backwards, the lt3014b will act as if there is a diode in series with its input. there will be no reverse current flow into the lt3014b and no reverse voltage will appear at the load. the device will protect both itself and the load. gnd (pin 2/pins 4, 9): ground. adj (pin 4/pin 2): adjust. this is the input to the error amplifier. this pin is internally clamped to 7v. it has a bias current of 4na which flows into the pin (see curve of adj pin bias current vs temperature in the typical perfor- mance characteristics). the adj pin voltage is 1.22v referenced to ground, and the output voltage range is 1.22v to 60v. out (pin 5/pin 1): output. the output supplies power to the load. a minimum output capacitor of 0.47 f is re- quired to prevent oscillations. larger output capacitors will be required for applications with large transient loads to limit peak voltage transients. see the applications information section for more information on output ca- pacitance and reverse output characteristics. nc (pin 3/pin 3, 5, 6, 7): no connect. no connect pins may be floated, tied to in or tied to gnd. uu u pi fu ctio s (sot-23 package/dd package) applicatio s i for atio wu uu the lt3014b is a 20ma high voltage low dropout regula- tor with micropower quiescent current. the device is capable of supplying 20ma at a dropout voltage of 350mv. operating quiescent current is only 7 a. in addition to the low quiescent current, the lt3014b incorporates several protection features which make it ideal for use in battery- powered systems. the device is protected against both reverse input and reverse output voltages. in battery backup applications where the output can be held up by a backup battery when the input is pulled to ground, the lt3014b acts like it has a diode in series with its output and prevents reverse current flow. adjustable operation the lt3014b has an output voltage range of 1.22v to 60v. the output voltage is set by the ratio of two external resistors as shown in figure 1. the device servos the output to maintain the voltage at the adjust pin at 1.22v referenced to ground. the current in r1 is then equal to 1.22v/r1 and the current in r2 is the current in r1 plus the adj pin bias current. the adj pin bias current, 4na at 25 c, flows through r2 into the adj pin. the output voltage can be calculated using the formula in figure 1. the value of r1 should be less than 1.62m to minimize errors in the output voltage caused by the adj pin bias current. the device is tested and specified with the adj pin tied to the out pin and a 5 a dc load (unless otherwise specified) for an output voltage of 1.22v. specifications for output voltages greater than 1.22v will be proportional to the ratio of the desired output voltage to 1.22v (v out / 1.22v). for example, load regulation for an output current change of 1ma to 20ma is C13mv typical at v out = 1.22v. at v out = 12v, load regulation is: (12v/1.22v) ? (C13mv) = C128mv
7 lt3014b 3014bf output capacitance and transient response the lt3014b is designed to be stable with a wide range of output capacitors. the esr of the output capacitor affects stability, most notably with small capacitors. a minimum output capacitor of 0.47 f with an esr of 3 ? or less is recommended to prevent oscillations. the lt3014b is a micropower device and output transient response will be a function of output capacitance. larger values of output capacitance decrease the peak deviations and provide improved transient response for larger load current changes. bypass capacitors, used to decouple individual components powered by the lt3014b, will increase the effective output capacitor value. extra consideration must be given to the use of ceramic capacitors. ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior across temperature and applied voltage. the most common dielectrics used are specified with eia temperature char- acteristic codes of z5u, y5v, x5r and x7r. the z5u and y5v dielectrics are good for providing high capacitances in a small package, but they tend to have strong voltage and temperature coefficients as shown in figures 2 and 3. when used with a 5v regulator, a 16v 10 f y5v capacitor can exhibit an effective value as low as 1 f to 2 f for the dc bias voltage applied and over the operating tempera- ture range. the x5r and x7r dielectrics result in more stable characteristics and are more suitable for use as the output capacitor. the x7r type has better stability across temperature, while the x5r is less expensive and is available in higher values. care still must be exercised when using x5r and x7r capacitors; the x5r and x7r applicatio s i for atio wu uu codes only specify operating temperature range and maxi- mum capacitance change over temperature. capacitance change due to dc bias with x5r and x7r capacitors is better than y5v and z5u capacitors, but can still be significant enough to drop capacitor values below appro- priate levels. capacitor dc bias characteristics tend to improve as component case size increases, but expected capacitance at operating voltage should be verified. voltage and temperature coefficients are not the only sources of problems. some ceramic capacitors have a piezoelectric response. a piezoelectric device generates voltage across its terminals due to mechanical stress, similar to the way a piezoelectric accelerometer or micro- phone works. for a ceramic capacitor the stress can be induced by vibrations in the system or thermal transients. thermal considerations the power handling capability of the device will be limited by the maximum rated junction temperature (125 c). the power dissipated by the device will be made up of two components: 1. output current multiplied by the input/output voltage differential: i out ? (v in C v out ) and, 2. gnd pin current multiplied by the input voltage: i gnd ? v in . the gnd pin current can be found by examining the gnd pin current curves in the typical performance character- istics. power dissipation will be equal to the sum of the two components listed above. dc bias voltage (v) change in value (%) 3014 f02 20 0 C20 C40 C60 C80 C100 0 4 8 10 26 12 14 x5r y5v 16 both capacitors are 16v, 1210 case size, 10 f figure 2. ceramic capacitor dc bias characteristics temperature ( c) C50 40 20 0 C20 C40 C60 C80 C100 25 75 3014 f03 C25 0 50 100 125 y5v change in value (%) x5r both capacitors are 16v, 1210 case size, 10 f figure 3. ceramic capacitor temperature characteristics
8 lt3014b 3014bf the lt3014b regulator has internal thermal limiting de- signed to protect the device during overload conditions. for continuous normal conditions 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. additional heat sources mounted nearby must also be considered. for surface mount devices, heat sinking is accomplished by using the heat spreading capabilities of the pc board and its copper traces. copper board stiffeners and plated through-holes can also be used to spread the heat gener- ated by power devices. the following table lists thermal resistance for several different board sizes and copper areas. all measurements were taken in still air on 3/32" fr-4 board with one ounce copper. table 1. sot-23 measured thermal resistance copper area thermal resistance topside backside board area (junction-to-ambient) 2500 sq mm 2500 sq mm 2500 sq mm 125 c/w 1000 sq mm 2500 sq mm 2500 sq mm 125 c/w 225 sq mm 2500 sq mm 2500 sq mm 130 c/w 100 sq mm 2500 sq mm 2500 sq mm 135 c/w 50 sq mm 2500 sq mm 2500 sq mm 150 c/w table 2. dfn measured thermal resistance copper area thermal resistance topside backside board area (junction-to-ambient) 2500 sq mm 2500 sq mm 2500 sq mm 40 c/w 1000 sq mm 2500 sq mm 2500 sq mm 45 c/w 225 sq mm 2500 sq mm 2500 sq mm 50 c/w 100 sq mm 2500 sq mm 2500 sq mm 62 c/w for the dfn package, the thermal resistance junction-to- case ( jc ), measured at the exposed pad on the back of the die, is 16 c/w. continuous operation at large input/output voltage differ- entials and maximum load current is not practical due to thermal limitations. transient operation at high input/ output differentials is possible. the approximate thermal time constant for a 2500sq mm 3/32" fr-4 board with maximum topside and backside area for one ounce copper is 3 seconds. this time constant will increase as more thermal mass is added (i.e. vias, larger board, and other components). for an application with transient high power peaks, aver- age power dissipation can be used for junction tempera- ture calculations as long as the pulse period is significantly less than the thermal time constant of the device and board. calculating junction temperature example 1: given an output voltage of 5v, an input voltage range of 24v to 30v, an output current range of 0ma to 20ma, and a maximum ambient temperature of 50 c, what will the maximum junction temperature be? the power dissipated by the device will be equal to: i out(max) ? (v in(max) C v out ) + (i gnd ? v in(max) ) where: i out(max) = 20ma v in(max) = 30v i gnd at (i out = 20ma, v in = 30v) = 0.55ma so: p = 20ma ? (30v C 5v) + (0.55ma ? 30v) = 0.52w the thermal resistance for the dfn package will be in the range of 40 c/w to 62 c/w depending on the copper area. so the junction temperature rise above ambient will be approximately equal to: 0.52w ? 50 c/w = 26 c the maximum junction temperature will then be equal to the maximum junction temperature rise above ambient plus the maximum ambient temperature or: t jmax = 50 c + 26 c = 76 c example 2: given an output voltage of 5v, an input voltage of 48v that rises to 72v for 5ms(max) out of every 100ms, and a 5ma load that steps to 20ma for 50ms out of every 250ms, what is the junction temperature rise above ambi- ent? using a 500ms period (well under the time constant of the board), power dissipation is as follows: p1(48v in, 5ma load) = 5ma ? (48v C 5v) + (100 a ? 48v) = 0.22w applicatio s i for atio wu uu
9 lt3014b 3014bf p2(48v in, 20ma load) = 20ma ? (48v C 5v) + (0.55ma ? 48v) = 0.89w p3(72v in, 5ma load) = 5ma ? (72v C 5v) + (100 a ? 72v) = 0.34w p4(72v in, 20ma load) = 20ma ? (72v C 5v) + (0.55ma ? 72v) = 1.38w operation at the different power levels is as follows: 76% operation at p1, 19% for p2, 4% for p3, and 1% for p4. p eff = 76%(0.22w) + 19%(0.89w) + 4%(0.34w) + 1%(1.38w) = 0.36w with a thermal resistance in the range of 40 c/w to 62 c/w, this translates to a junction temperature rise above ambient of 20 c. protection features the lt3014b incorporates several protection features which make it ideal for use in battery-powered circuits. in addition to the normal protection features associated with monolithic regulators, such as current limiting and ther- mal limiting, the device is protected against reverse-input voltages, and reverse voltages from output to input. current limit protection and thermal overload protection are intended to protect the device against current overload conditions at the output of the device. for normal opera- tion, the junction temperature should not exceed 125 c. the input of the device will withstand reverse voltages of 80v. current flow into the device will be limited to less than 6ma (typically less than 100 a) and no negative voltage will appear at the output. the device will protect both itself and the load. this provides protection against batteries which can be plugged in backward. the adj pin can be pulled above or below ground by as much as 7v without damaging the device. if the input is left open circuit or grounded, the adj pin will act like an open circuit when pulled below ground, and like a large resistor (typically 100k) in series with a diode when pulled above ground. if the input is powered by a voltage source, pulling the adj pin below the reference voltage will cause the device to current limit. this will cause the output to go to an unregulated high voltage. pulling the adj pin above the reference voltage will turn off all output current. in situations where the adj pin is connected to a resistor divider that would pull the adj pin above its 7v clamp voltage if the output is pulled high, the adj pin input current must be limited to less than 5ma. for example, a resistor divider is used to provide a regulated 1.5v output from the 1.22v reference when the output is forced to 60v. the top resistor of the resistor divider must be chosen to limit the current into the adj pin to less than 5ma when the adj pin is at 7v. the 53v difference between the out and adj pins divided by the 5ma maximum current into the adj pin yields a minimum top resistor value of 10.6k. in circuits where a backup battery is required, several different input/output conditions can occur. the output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage, or is left open circuit. current flow back into the output will follow the curve shown in figure 4. the rise in reverse output current above 7v occurs from the breakdown of the 7v clamp on the adj pin. with a resistor divider on the regulator output, this current will be reduced depending on the size of the resistor divider. when the in pin of the lt3014b is forced below the out pin or the out pin is pulled above the in pin, input current will typically drop to less than 2 a. this can happen if the input of the lt3014b is connected to a discharged (low voltage) battery and the output is held up by either a backup battery or a second regulator circuit. applicatio s i for atio wu uu output voltage (v) 0 reverse output current ( a) 50 45 40 30 35 25 20 15 10 5 0 8 3014 f04 2 13579 46 10 t j = 25 c v in = 0v v out = v adj current flows into output pin adj pin esd clamp figure 4. reverse output current
10 lt3014b 3014bf in lt3014b 1 f return C48v out adj gnd 3014 ta06 1 f r set i led = 1.22v/r set C48v can vary from C3.3v to C80v + adj out in lt3014b gnd 1 f 1 f v in 12v (later 42v) load: clock, security system etc + C adj out in lt3014b gnd 1 f 1 f v in 48v (72v transient) load: system monitor etc no protection diode needed! no protection diode needed! 3014 ta05 backup battery r1 r2 r1 r2 lt3014b automotive application lt3014b telecom application constant brightness for indicator led over wide input voltage range typical applicatio s u
11 lt3014b 3014bf dd package 8-lead plastic dfn (3mm 3mm) (reference ltc dwg # 05-08-1698) 3.00 0.10 (4 sides) note: 1. drawing to be made a jedec package outline m0-229 variation of (weed-1) 2. drawing not to scale 3. all dimensions are in millimeters 4. dimensions of exposed pad on bottom of package do not include mold flash. mold flash, if present, shall not exceed 0.15mm on any side 5. exposed pad shall be solder plated 6. shaded area is only a reference for pin 1 location on top and bottom of package 0.38 0.10 bottom viewexposed pad 1.65 0.10 (2 sides) 0.75 0.05 r = 0.115 typ 2.38 0.10 (2 sides) 1 4 8 5 pin 1 top mark (note 6) 0.200 ref 0.00 C 0.05 (dd8) dfn 1203 0.25 0.05 2.38 0.05 (2 sides) recommended solder pad pitch and dimensions 1.65 0.05 (2 sides) 2.15 0.05 0.50 bsc 0.675 0.05 3.5 0.05 package outline 0.25 0.05 0.50 bsc u package descriptio 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. s5 package 5-lead plastic tsot-23 (reference ltc dwg # 05-08-1635) 1.50 C 1.75 (note 4) 2.80 bsc 0.30 C 0.45 typ 5 plcs (note 3) datum a 0.09 C 0.20 (note 3) s5 tsot-23 0302 pin one 2.90 bsc (note 4) 0.95 bsc 1.90 bsc 0.80 C 0.90 1.00 max 0.01 C 0.10 0.20 bsc 0.30 C 0.50 ref note: 1. dimensions are in millimeters 2. drawing not to scale 3. dimensions are inclusive of plating 4. dimensions are exclusive of mold flash and metal burr 5. mold flash shall not exceed 0.254mm 6. jedec package reference is mo-193 3.85 max 0.62 max 0.95 ref recommended solder pad layout per ipc calculator 1.4 min 2.62 ref 1.22 ref
12 lt3014b 3014bf part number description comments lt1129 700ma, micropower, ldo v in : 4.2v to 30v, v out(min) = 3.75v, v do = 0.4v, i q = 50 a, i sd = 16 a, dd, sot-223, s8, to220, tssop-20 packages lt1175 500ma, micropower negative ldo v in : C20v to C4.3v, v out(min) = C3.8v, v do = 0.50v, i q = 45 a, i sd = 10 a, dd, sot-223, s8 packages lt1185 3a, negative ldo v in : C35v to C4.2v, v out(min) = C2.40v, v do = 0.80v, i q = 2.5ma, i sd <1 a, to220-5 package lt1761 100ma, low noise micropower, ldo v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 20 a, i sd <1 a, thinsot package lt1762 150ma, low noise micropower, ldo v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 25 a, i sd <1 a, ms8 package lt1763 500ma, low noise micropower, ldo v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 30 a, i sd <1 a, s8 package lt1764/lt1764a 3a, low noise, fast transient response, ldo v in : 2.7v to 20v, v out(min) = 1.21v, v do = 0.34v, i q = 1ma, i sd <1 a, dd, to220 packages ltc1844 150ma, very low dropout ldo v in : 1.6v to 6.5v, v out(min) = 1.25v, v do = 0.08v, i q = 40 a, i sd <1 a, thinsot package lt1962 300ma, low noise micropower, ldo v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.27v, i q = 30 a, i sd <1 a, ms8 package lt1963/lt1963a 1.5a, low noise, fast transient response, ldo v in : 2.1v to 20v, v out(min) = 1.21v, v do = 0.34v, i q = 1ma, i sd <1 a, dd, to220, sot packages lt1964 200ma, low noise micropower, negative ldo v in : C1.9v to C20v, v out(min) = C1.21v, v do = 0.34v, i q = 30 a, i sd = 3 a, thinsot package lt3010 50ma, 80v, low noise micropower, ldo v in : 3v to 80v, v out(min) = 1.28v, v do = 0.3v, i q = 30 a, i sd <1 a, ms8e package lt3020 100ma, low v in , low v out micropower, vldo v in : 0.9v to 10v, v out(min) = 0.20v, v do = 0.15v, i q = 120 a, i sd <1 a, dfn, ms8 packages lt3023 dual 100ma, low noise micropower, ldo v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 40 a, i sd <1 a, dfn, ms10 packages lt3024 dual 100ma/500ma, low noise micropower, v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 60 a, i sd <1 a, ldo dfn, tssop-16e packages lt3027 dual 100ma, low noise ldo with independent v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 40 a, i sd <1 a, inputs dfn, ms10e packages lt3028 dual 100ma/500ma, low noise ldo with v in : 1.8v to 20v, v out(min) = 1.22v, v do = 0.30v, i q = 60 a, i sd <1 a, independent inputs dfn, tssop-16e packages related parts linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com lt 0206 1k ? printed in usa ? linear technology corporation 2006

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