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general description the lm4050/lm4051 are precision two-terminal, shunt- mode, bandgap voltage references available in fixed reverse breakdown voltages of 1.225v, 2.048v, 2.500v, 3.000v, 3.3v, 4.096v, and 5.000v. ideal for space-critical applications, the lm4050/lm4051 are offered in the sub miniature 3-pin sc70 surface-mount packages (1.8mm x 1.8mm), 50% smaller than comparable devices in sot23 surface-mount package (sot23 versions are also avail able). laser-trimmed resistors ensure excellent initial accuracy. with a 50ppm/c temperature coefficient, these devices are offered in three grades of initial accuracy ranging from 0.1% to 0.5%. the lm4050/lm4051 have a 60a to 15ma shunt-current capability with low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. the lm4050/lm4051 do not require an external stabilizing capacitor while ensuring stability with any capacitive loads. the lm4050/lm4051 specifications are guaranteed over the temperature range of -40c to +125c. applications portable, battery-powered equipment notebook computers cell phones industrial process controls features 50ppm/c (max) temperature coefficient guaranteed over the -40c to +125c temperature range ultra-small 3-pin sc70 package 0.1% (max) initial accuracy wide operating current range: 60a to 15ma low 28v rms output noise (10hz to 10khz) 1.225v, 2.048v, 2.500v, 3.000v, 3.3v, 4.096v, and 5.000v fixed reverse breakdown voltages no output capacitors required tolerates capacitive loads ordering information appears at end of data sheet. 19-2563; rev 8; 11/14 - 1 3 n.c.* + + lm4050lm4051 sc70/sot23 top view 2 *pin 3 must be left unconnected or connected to pin 2. lm4050 i load i shunt r s v s v r i shunt + i load lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages pin coniguration pin coniguration downloaded from: http:///
reverse current (cathode to anode) ..................................20ma forward current (anode to cathode) .................................. 10ma continuous power dissipation (t a = +70c) 3-pin sc70 (derate 2.17mw/c above +70c) ........... 174mw 3-pin sot23 (derate 4.01mw/c above +70c) ........ 320mw operating temperature range lm4050/lm4051_e_ _ _ .............................. -40c to +125c storage temperature range ............................ -65c to +150c junction temperature ...................................................... +150c lead temperature (soldering, 10s)..................................+300c soldering temperature (reflow) ....................................... +260c (i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4051a (0.1%) 1.2238 1.2250 1.2262 v lm4051b (0.2%) 1.2226 1.2250 1.2275 lm4051c (0.5%) 1.2189 1.2250 1.2311 reverse breakdown voltage tolerance (note 2) v rtol lm4051a 1.2 7 mv lm4051b 2.4 9 lm4051c 6.0 12 minimum operating current i rmin 45 60 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 20 ppm/ c i r = 1ma 15 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.7 1.5 mv 1ma i r 12ma 2.5 8.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r 0.5 1.5 ? wideband noise e n i r = 100a, 10hz f 10khz 20 v rms reverse breakdown voltage long-term stability ?v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 2 absolute maximum ratings stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. electrical characteristics 1.225v downloaded from: http:///
(i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 2.0460 2.0480 2.0500 v lm4050b (0.2%) 2.0439 2.0480 2.0521 lm4050c (0.5%) 2.0378 2.0480 2.0582 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 2.0 12 mv lm4050b 4.0 14 lm4050c 10 20 minimum operating current i rmin 45 65 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 20 ppm/ c i r = 1ma 15 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.3 1.0 mv 1ma i r 15ma 2.5 8.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050a/b 0.3 0.8 ? lm4050c 0.3 0.9 wideband noise e n i r = 100a, 10hz f 10khz 28 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 3 electrical characteristics 2.048v downloaded from: http:///
(i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 2.4975 2.5000 2.5025 v lm4050b (0.2%) 2.4950 2.5000 2.5050 lm4050c (0.5%) 2.4875 2.5000 2.5125 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 2.5 15 mv lm4050b 5.0 18 lm4050c 13 25 minimum operating current i rmin 45 65 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 20 ppm/c i r = 1ma 15 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.3 1.0 mv 1ma i r 15ma 2.5 8.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050a/b 0.3 0.8 ? lm4050c 0.3 0.9 wideband noise e n i r = 100a, 10hz f 10khz 35 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 4 electrical characteristics2.500v downloaded from: http:///
(i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) (i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 2.9970 3.0000 3.0030 v lm4050b (0.2%) 2.9940 3.0000 3.0060 lm4050c (0.5%) 2.9850 3.0000 3.0150 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 3.0 18 mv lm4050b 6.0 21 lm4050c 15 30 minimum operating current i rmin 45 67 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 20 ppm/ c i r = 1ma 15 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.3 1.0 mv 1ma i r 15ma 2.5 8.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050a/b 0.3 0.8 ? lm4050c 0.3 0.9 wideband noise e n i r = 100a, 10hz f 10khz 45 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 3.2967 3.3000 3.3033 v lm4050b (0.2%) 3.2934 3.3000 3.3066 lm4050c (0.5%) 3.2835 3.3000 3.3165 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 3.0 18 mv lm4050b 6.0 21 lm4050c 15 30 minimum operating current i rmin 45 67 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 20 ppm/c i r = 1ma 15 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.3 1.0 mv 1ma i r 15ma 2.5 8.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050a/b 0.3 0.8 ? lm4050c 0.3 0.9 wideband noise e n i r = 100a, 10hz f 10khz 50 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 5 electrical characteristics3.000velectrical characteristics3.300v downloaded from: http:///
(i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 4.0919 4.0960 4.1001 v lm4050b (0.2%) 4.0878 4.0960 4.1042 lm4050c (0.5%) 4.0755 4.0960 4.1165 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 4.1 25 mv lm4050b 8.2 29 lm4050c 20 41 minimum operating current i rmin 50 73 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 30 ppm/c i r = 1ma 20 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.5 1.2 mv 1ma i r 15ma 3.0 10.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r 0.5 1.0 ? wideband noise e n i r = 100a, 10hz f 10khz 64 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 6 electrical characteristics4.096v downloaded from: http:///
(i r = 100a, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) note 1: all devices are 100% production tested at +25c and are guaranteed by design for t a = t min to t max , as specified. note 2: the limit over the full temperature range for the reverse breakdown voltage tolerance is defined as: [v rtol ] [(?v r / ?t) x (max?t) x (v r )] where ?v r / ?t is the v r temperature coefficient, max?t is the difference from the +25c reference point to t min or t max , and v r is the reverse breakdown voltage. the total tolerance over the full temperature range for the different grades where max?t = +100c is shown below: ? a grade: 0.6% = 0.1% 50ppm/c x 100c ? b grade: 0.7% = 0.2% 50ppm/c x 100c ? c grade: 1.0% = 0.5% 50ppm/c x 100c note 3: guaranteed by design. parameter symbol conditions min typ max units reverse breakdown voltage v r t a = +25c lm4050a (0.1%) 4.9950 5.0000 5.0050 v lm4050b (0.2%) 4.9900 5.0000 5.0100 lm4050c (0.5%) 4.9750 5.0000 5.0250 reverse breakdown voltage tolerance (note 2) v rtol lm4050a 5.0 30 mv lm4050b 10 35 lm4050c 25 50 minimum operating current i rmin 54 80 a average reverse voltage temperature coeficient (notes 2, 3) d v r / d t i r = 10ma 30 ppm/c i r = 1ma 20 50 i r = 100a 15 reverse breakdown voltage change with operating current change i rmin i r 1ma 0.5 1.4 mv 1ma i r 15ma 3.5 12.0 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r 0.5 1.1 ? wideband noise e n i r = 100a, 10hz f 10khz 80 v rms reverse breakdown voltage long-term stability d v r t = 1000h 120 ppm lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 7 electrical characteristics5.000v downloaded from: http:///
(i r = 100a, sc70-3 package, t a = +25c, unless otherwise noted.) output voltage vs. temperature (v out = 2.500v) max4050 toc02 temperature (c) output voltage (v) 110 85 60 35 10 -15 2.492 2.494 2.496 2.4982.490 -40 135 output voltage vs. temperature (v out = 5.000v) max4050 toc03 temperature (c) output voltage (v) 110 85 -15 10 35 60 4.989 4.991 4.993 4.995 4.997 4.999 5.001 5.0034.987 -40 135 lm4050-2.5v reverse voltage vs. i shunt lm4050 toc04 i shunt (ma) reverse voltage change (mv) 15 10 5 1 2 3 4 50 0 20 t a = +125c t a = -40c t a = +25c t a = +85c lm4050-5.0v reverse voltage vs. i shunt lm4050 toc05 i shunt (ma) reverse voltage change (mv) 15 10 5 1 2 3 4 5 60 0 20 t a = -40c t a = +125c t a = +85c t a = +25c 0 1 2 3 4 5 6 0 50 100 reverse characteristics and minimum operating current lm4050 toc01 reverse current (a) reverse voltage (v) lm4050_i_3-5.0 lm4050_i_3-4.1 lm4050_i_3-3.0 lm4050_i_3-2.5 lm4050_i_3-2.1 maxim integrated 8 www.maximintegrated.com lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages typical operating characteristics downloaded from: http:///
(i r = 100a, sc70-3 package, t a = +25c, unless otherwise noted.) figure 1. load-transient test circuit v gen v r ac-coupled +25a -25a2mv/div lm4050-2.5v load-transient response lm4050 toc06 10s/div ch1: v gen 2v/div ch2: v r ac-coupled 2mv/div i shunt = 100a 25a, r l = 100k ? , see figure 1. v gen v r ac-coupled +25a -25a10mv/div lm4050-5.0v load-transient response lm4050 toc07 40s/div i shunt = 100a 25a r l = 100k ? , see figure 1. v gen v r ac-coupled +250a -250a10mv/div lm4050-2.5v load-transient response lm4050 toc08 10s/div i shunt = 1ma 250a r l = 10k ? , see figure 1. v gen v r ac-coupled +250a -250a10mv/div lm4050-5.0v load-transient response lm4050 toc09 10s/div i shunt = 1ma 250a r l = 10k ? , see figure 1. v gen v r ac-coupled +2.5ma -2.5ma20mv/div lm4050-2.5v load-transient response lm4050 toc10 10s/div i shunt = 10ma 2.5a r l = 1k ? , see figure 1. v gen v r ac-coupled +2.5ma -2.5ma20mv/div lm4050-5.0v load-transient response lm4050 toc11 10s/div i shunt = 10ma 2.5ma r l = 1k ? , see figure 1. 1k ? v b + - i shunt v r r l v gen maxim integrated 9 www.maximintegrated.com lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages typical operating characteristics (continued) downloaded from: http:///
(i r = 100a, sc70-3 package, t a = +25c, unless otherwise noted.) figure 2. startup characteristics test circuit v in v out lm4050-2.5v startup characteristics lm4050 toc12 0 16 20 8 12 4 24 28 32 36 response time (s) 5v 0 0 2v 1v r s = 30k ? see figure 2. v in v out lm4050-5.0v startup characteristics lm4050 toc13 0 40 50 20 30 10 60 70 80 90 response time (s) 5v 0 0 4v 2v r s = 16k ? see figure 2. 0.1k 10k 1k 100k 1m lm4050-2.5v output impedance vs. frequency lm4050 toc14 frequency (hz) impedance ( ? ) 1000 0.1 1 10 100 i r = 150a i r = 1ma c 1 = 1f c 1 = 0 0.1k 10k 1k 100k 1m lm4050-5.0v output impedance vs. frequency lm4050 toc15 frequency (hz) impedance ( ? ) 100 0.1 1 10 i r = 150a i r = 1ma c 1 = 0 c 1 = 1f 1 100 10 1k 10k lm4050-2.5v noise vs. frequency lm4050 toc16 frequency (hz) 10,000 100 1000 noise (nv/ hz) 1 100 10 1k 10k lm4050-5.0v noise vs. frequency lm4050 toc17 frequency (hz) 10,000 100 1000 noise (nv/ hz) r s v in 1hz rate 50% duty cycle v r maxim integrated 10 www.maximintegrated.com lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages typical operating characteristics (continued) downloaded from: http:///
detailed description the lm4050/lm4051 shunt references use the bandgap principle to produce a stable, accurate voltage. the device behaves similarly to an ideal zener diode; a fixed voltage is maintained across its output terminals when biased with 60a to 15ma of reverse current. the lm4050/ lm4051 clamps to a voltage of one diode drop below ground when biased with forward currents up 10ma. figure 3 shows a typical operating circuit. the lm4050/ lm4051 are ideal for providing stable references from a high-voltage power supply. applications information the lm4050/lm4051s internal pass transistors are used to maintain a constant output voltage (v shunt ) by sink - ing the necessary amount of current across a source resistor. the source resistance (r s ) is determined from the load current (i load ) range, supply voltage (v s ) varia - tions, v shunt , and desired quiescent current. choose the value of r s when v s is at a minimum and i load is at a maximum. maintain a minimum i shunt of 60a at all times. the r s value should be large enough to keep i shunt less than 15ma for proper regulation when v s is maximum and i load is at a minimum. to prevent damage to the device, i shunt should never exceed 20ma. therefore, the value of rs is bounded by the following equation: [v s(min) - v r ] / [60a + i load(max) ] > r s > [v s(max) - v r ] / [20ma + i load(min) ] choosing a larger resistance minimizes the total power dissipation in the circuit by reducing the shunt current (p d(total) = v s x i shunt ). provide a safety margin to incorporate the worst-case tolerance of the resistor used. ensure that the resistors power rating is adequate, using the following general power equation: pd r = i shunt x (v s(max) - v shunt ) output capacitance the lm4050/lm4051 do not require external capaci - tors for frequency stability and are stable for any output capacitance. temperature performance the lm4050/lm4051 typically exhibit output voltage tem - perature coefficients within 15ppm/c. the polarity of the temperature coefficients may be different from one device to another; some may have positive coefficients, and oth - ers may have negative coefficients. high temperature operation the maximum junction temperature of the lm4050/ lm4051 is +150c. the maximum operating temperature for the lm4050/lm4051_e_ is +125c. at a maximum load current of 15ma and a maximum output voltage of 5v, the parts dissipate 75mw of power. the power dis - sipation limits of the 3-pin sc70 call for a derating value of 2.17mw/c above +70c and thus for 75mw of power dissipation, the parts self-heat to 35.56c above ambient temperature. if the ambient temperature is +125c, the parts operate at 159.56c, thereby exceeding the maxi - mum junction temperature value of +150c. for high-temperature operation, care must be taken to ensure the combination of ambient temperature, output power dissi - pation, and package thermal resistance does not conspire to raise the device temperature beyond that listed in the absolute maximum ratings . either reduce the output load current or the ambient temperature to keep the part within the limits. figure 3. typical operating circuit pin name function 1 + positive terminal of the shunt reference 2 - negative terminal of the shunt reference 3 n.c. no connection. leave this pin unconnected or connected to pin 2. lm4050 i load i shunt r s v s v r i shunt + i load lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 11 pin description downloaded from: http:///
part output voltage (v) initial accuracy (%) tempco (ppm/_c) temp range pin-package top mark lm4050 aem3-2.1+t 2.048 0.1 50 -40c to +125c 3 sot23 fztr lm4050aex3-2.1+t 2.048 0.1 50 -40c to +125c 3 sc70 asm lm4050bem3-2.1+t 2.048 0.2 50 -40c to +125c 3 sot23 fzts lm4050bex3-2.1+t 2.048 0.2 50 -40c to +125c 3 sc70 asn lm4050cem3-2.1+t 2.048 0.5 50 -40c to +125c 3 sot23 fztt lm4050cex3-2.1+t 2.048 0.5 50 -40c to +125c 3 sc70 aso lm4050aem3-2.5+t 2.500 0.1 50 -40c to +125c 3 sot23 fztu lm4050aex3-2.5+t 2.500 0.1 50 -40c to +125c 3 sc70 asp lm4050aex3-2.5/v+t 2.500 0.1 50 -40c to +125c 3 sc70 +aue lm4050bem3-2.5+t 2.500 0.2 50 -40c to +125c 3 sot23 fztv lm4050bex3-2.5+t 2.500 0.2 50 -40c to +125c 3 sc70 asq lm4050cem3-2.5+t 2.500 0.5 50 -40c to +125c 3 sot23 fztw lm4050cex3-2.5+t 2.500 0.5 50 -40c to +125c 3 sc70 asr lm4050aem3-3.0+t 3.000 0.1 50 -40c to +125c 3 sot23 fztx lm4050aex3-3.0+t 3.000 0.1 50 -40c to +125c 3 sc70 ass lm4050bem3-3.0+t 3.000 0.2 50 -40c to +125c 3 sot23 fzty lm4050bem3-3.0/v+t 3.000 0.2 50 -40c to +125c 3 sot23 +fzvg lm4050bex3-3.0+t 3.000 0.2 50 -40c to +125c 3 sc70 ast lm4050cem3-3.0+t 3.000 0.5 50 -40c to +125c 3 sot23 fztz lm4050cex3-3.0+t 3.000 0.5 50 -40c to +125c 3 sc70 asu lm4050aex3-3.3+t 3.300 0.1 50 -40c to +125c 3 sc70 aoj lm4050aex3-3.3/v+t 3.300 0.1 50 -40c to +125c 3 sc70 +aue lm4050bex3-3.3+t 3.300 0.2 50 -40c to +125c 3 sc70 aok lm4050cex3-3.3+t 3.300 0.5 50 -40c to +125c 3 sc70 aol lm4050cex3-3.3/v+t 3.300 0.5 50 -40c to +125c 3 sc70 +aue lm4050aem3-4.1+t 4.096 0.1 50 -40c to +125c 3 sot23 fzua lm4050aex3-4.1+t 4.096 0.1 50 -40c to +125c 3 sc70 asv lm4050bem3-4.1+t 4.096 0.2 50 -40c to +125c 3 sot23 fzub lm4050bem3-4.1/v+t 4.096 0.2 50 -40c to +125c 3 sot23 +fzvl lm4050bex3-4.1+t 4.096 0.2 50 -40c to +125c 3 sc70 asw lm4050cem3-4.1+t 4.096 0.5 50 -40c to +125c 3 sot23 fzuc lm4050cex3-4.1+t 4.096 0.5 50 -40c to +125c 3 sc70 asx lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 12 ordering information downloaded from: http:///
part output voltage (v) initial accuracy (%) tempco (ppm/_c) temp range pin-package top mark lm4050aem3-5.0+t 5.000 0.1 50 -40c to +125c 3 sot23 fzud lm4050aem3-5.0/v+t 5.000 0.1 50 -40c to +125c 3 sot23 +fzxl lm4050aex3-5.0+t 5.000 0.1 50 -40c to +125c 3 sc70 asy lm4050bem3-5.0+t 5.000 0.2 50 -40c to +125c 3 sot23 fzue lm4050bex3-5.0+t 5.000 0.2 50 -40c to +125c 3 sc70 asz lm4050cem3-5.0+t 5.000 0.5 50 -40c to +125c 3 sot23 fzuf lm4050cem3-5.0/v+t 5.000 0.5 50 -40c to +125c 3 sot23 +fzvm lm4050cex3-5.0+t 5.000 0.5 50 -40c to +125c 3 sc70 ata lm4051 aem3-1.2+t 1.225 0.1 50 -40c to +125c 3 sot23 fzto lm4051aex3-1.2+t 1.225 0.1 50 -40c to +125c 3 sc70 asj lm4051bem3-1.2+t 1.225 0.2 50 -40c to +125c 3 sot23 fztp lm4051bex3-1.2+t 1.225 0.2 50 -40c to +125c 3 sc70 ask lm4051cem3-1.2+t 1.225 0.5 50 -40c to +125c 3 sot23 fztq lm4051cex3-1.2+t 1.225 0.5 50 -40c to +125c 3 sc70 asl package type package code outline no. land pattern no. 3 sot23 u3+1 21-0051 90-0179 3 sc70 x3+2 21-0075 90-0208 lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages www.maximintegrated.com maxim integrated 13 ordering information (continued)chip information process: bicmos package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. downloaded from: http:///
revision number revision date description pages changed 0 7/02 initial release 4 5/09 added lead-free notation and corrected topmarks in the ordering information and selector guide sections 1, 12 5 5/11 added automotive packages and updated the absolute maximum ratings . 1, 2 6 9/11 added automotive packages to selector guide and ordering information . 1, 12 7 1/13 removed selector guide and revised ordering information . 1, 12 8 11/14 added lm4050aem3-5.0/v+t to ordering information . 13 maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and speciications without n otice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. ? 2014 maxim integrated products, inc. 14 lm4050/lm4051 50ppm/c precision micropower shunt voltage references with multiple reverse breakdown voltages revision history for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com. downloaded from: http:///

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