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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-criti- cal applications, the lm4050/lm4051 are offered in the subminiature 3-pin sc70 surface-mount packages (1.8mm x 1.8mm), 50% smaller than comparable devices in sot23 surface-mount package (sot23 ver- sions are also available). laser-trimmed resistors ensure excellent initial accuracy. with a 50ppm/? temperature coefficient, these devices are offered in three grades of initial accu- racy ranging from 0.1% to 0.5%. the lm4050/lm4051 have a 60? to 15ma shunt-current capability with low dynamic impedance, ensuring stable reverse break- down 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 -40? to +125?. ________________________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: 60 a 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 lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages ________________________________________________________________ maxim integrated products 1 - 1 3 n.c.* + lm4050/ lm4051 sc70/sot23 top view 2 *pin 3 must be left unconnected or connected to pin 2. pin temp range pin- package output voltage (v) lm 4050_e m3- 2.1+t - 40c to + 125c 3 sot23 2.048 lm 4050_e x 3-2.1+t - 40c to + 125c 3 sc70 2.048 lm 4050_e m3- 2.5+t - 40c to + 125c 3 sot23 2.500 lm 4050_e x 3-2.5+t - 40c to + 125c 3 sc70 2.500 lm 4050_e m3- 3.0+t - 40c to + 125c 3 sot23 3.000 lm 4050_e x 3-3.0+t - 40c to + 125c 3 sc70 3.000 lm 4050_e m3- 3.3+t - 40c to + 125c 3 sot23 3.300 lm 4050_e x 3-3.3+t - 40c to + 125c 3 sc70 3.300 lm4050_ex3-3.3/v+t - 40c to + 125c 3 sc70 3.300 lm 4050_e m3- 4.1+ t - 40c to + 125c 3 sot23 4.096 lm 4050_e m3- 4.1/v+ t - 40c to + 125c 3 sot23 4.096 lm 4050_e x 3-4.1+t - 40c to + 125c 3 sc70 4.096 lm 4050_e m3- 5.0+ t - 40c to + 125c 3 sot23 5.000 lm4050_em3-5.0/v+t - 40c to + 125c 3 sot23 5.000 lm 4050_e x 3-5.0+t - 40c to + 125c 3 sc70 5.000 lm 4051_e m3- 1.2+ t - 40c to + 125c 3 sot23 1.225 lm 4051_e x 3-1.2+t - 40c to + 125c 3 sc70 1.225 pin configuration typical operating circuit selector guide 19-2563; rev 5; 5/11 ordering information appears at end of data sheet. lm4050 i load i shunt r s v s v r i shunt + i load +denotes a lead(pb)-free/rohs-compliant package. t = tape and reel. /v denotes an automotive qualified part. for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com.
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics1.225v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) stresses beyond those listed under ?bsolute 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. reverse current (cathode to anode) ..................................20ma forward current (anode to cathode) ..................................10ma continuous power dissipation (t a = +70?) 3-pin sc70 (derate 2.17mw/? above +70?) ............174mw 3-pin sot23 (derate 4.01mw/? above +70?)..........320mw operating temperature range lm4050/lm4051_e_ _ _ ................................-40? to +125? storage temperature range .............................-65? to +150? junction temperature ......................................................+150? lead temperature (soldering, 10s)..................................+300? soldering temperature (reflow) .......................................+260? parameter symbol conditions min typ max units lm4051a (0.1%) 1.2238 1.2250 1.2262 lm4051b (0.2%) 1.2226 1.2250 1.2275 reverse breakdown voltage v r t a = +25 c lm4051c (0.5%) 1.2189 1.2250 1.2311 v lm4051a 1.2 7 lm4051b 2.4 9 reverse breakdown voltage tolerance (note 2) v rtol lm4051c 6.0 12 mv minimum operating current i rmin 45 60 ? i r = 10ma 20 i r = 1ma 15 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.7 1.5 reverse breakdown voltage change with operating current change 1ma i r 12ma 2.5 8.0 mv 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 = 100?, 10hz f 10khz 20 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages _______________________________________________________________________________________ 3 electrical characteristics2.048v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 2.0460 2.0480 2.0500 lm4050b (0.2%) 2.0439 2.0480 2.0521 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 2.0378 2.0480 2.0582 v lm4050a 2.0 12 lm4050b 4.0 14 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 10 20 mv minimum operating current i rmin 45 65 ? i r = 10ma 20 i r = 1ma 15 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.3 1.0 reverse breakdown voltage change with operating current change 1ma i r 15ma 2.5 8.0 mv lm4050a/b 0.3 0.8 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050c 0.3 0.9 ? wideband noise e n i r = 100?, 10hz f 10khz 28 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 4 _______________________________________________________________________________________ electrical characteristics2.500v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 2.4975 2.5000 2.5025 lm4050b (0.2%) 2.4950 2.5000 2.5050 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 2.4875 2.5000 2.5125 v lm4050a 2.5 15 lm4050b 5.0 18 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 13 25 mv minimum operating current i rmin 45 65 ? i r = 10ma 20 i r = 1ma 15 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.3 1.0 reverse breakdown voltage change with operating current change 1ma i r 15ma 2.5 8.0 mv lm4050a/b 0.3 0.8 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050c 0.3 0.9 ? wideband noise e n i r = 100?, 10hz f 10khz 35 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages _______________________________________________________________________________________ 5 electrical characteristics3.000v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 2.9970 3.0000 3.0030 lm4050b (0.2%) 2.9940 3.0000 3.0060 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 2.9850 3.0000 3.0150 v lm4050a 3.0 18 lm4050b 6.0 21 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 15 30 mv minimum operating current i rmin 45 67 ? i r = 10ma 20 i r = 1ma 15 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.3 1.0 reverse breakdown voltage change with operating current change 1ma i r 15ma 2.5 8.0 mv lm4050a/b 0.3 0.8 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050c 0.3 0.9 ? wideband noise e n i r = 100?, 10hz f 10khz 45 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm electrical characteristics3.300v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 3.2967 3.3000 3.3033 lm4050b (0.2%) 3.2934 3.3000 3.3066 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 3.2835 3.3000 3.3165 v lm4050a 3.0 18 lm4050b 6.0 21 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 15 30 mv minimum operating current i rmin 45 67 ? i r = 10ma 20 i r = 1ma 15 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.3 1.0 reverse breakdown voltage change with operating current change 1ma i r 15ma 2.5 8.0 mv lm4050a/b 0.3 0.8 reverse dynamic impedance (note 3) z r i r = 1ma, f = 120hz, i ac = 0.1i r lm4050c 0.3 0.9 ? wideband noise e n i r = 100?, 10hz f 10khz 50 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 6 _______________________________________________________________________________________ electrical characteristics4.096v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 4.0919 4.0960 4.1001 lm4050b (0.2%) 4.0878 4.0960 4.1042 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 4.0755 4.0960 4.1165 v lm4050a 4.1 25 lm4050b 8.2 29 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 20 41 mv minimum operating current i rmin 50 73 ? i r = 10ma 30 i r = 1ma 20 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.5 1.2 reverse breakdown voltage change with operating current change 1ma i r 15ma 3.0 10.0 mv 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 = 100?, 10hz f 10khz 64 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages _______________________________________________________________________________________ 7 note 1: all devices are 100% production tested at +25? 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 +25? 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 = +100? is shown below: a grade: ?.6% = ?.1% ?0ppm/? 100? b grade: ?.7% = ?.2% ?0ppm/? 100? c grade: ?.0% = ?.5% ?0ppm/? 100? note 3: guaranteed by design. electrical characteristics5.000v (i r = 100?, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units lm4050a (0.1%) 4.9950 5.0000 5.0050 lm4050b (0.2%) 4.9900 5.0000 5.0100 reverse breakdown voltage v r t a = +25 c lm4050c (0.5%) 4.9750 5.0000 5.0250 v lm4050a 5.0 30 lm4050b 10 35 reverse breakdown voltage tolerance (note 2) v rtol lm4050c 25 50 mv minimum operating current i rmin 54 80 ? i r = 10ma 30 i r = 1ma 20 50 average reverse voltage temperature coefficient (notes 2, 3) ? v r /? t i r = 100? 15 ppm/ c i rmin i r 1ma 0.5 1.4 reverse breakdown voltage change with operating current change 1ma i r 15ma 3.5 12.0 mv 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 = 100?, 10hz f 10khz 80 ? rms reverse breakdown voltage long-term stability ? v r t = 1000h 120 ppm
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 8 _______________________________________________________________________________________ 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 2.498 2.490 -40 135 output voltage vs. temperature (v out = 5.000v) max4050 toc03 temperature ( c) output voltage (v) 11085 -15 10 35 60 4.989 4.991 4.993 4.995 4.997 4.999 5.001 5.003 4.987 -40 135 typical operating characteristics (i r = 100?, sc70-3 package, t a = +25?, unless otherwise noted.) 0 1 2 3 4 5 6 050100 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 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 6 0 020 t a = -40c t a = +125c t a = +85c t a = +25c lm4050-2.5v reverse voltage vs. i shunt lm4050 toc04 i shunt (ma) reverse voltage change (mv) 15 10 5 1 2 3 4 5 0 020 t a = +125c t a = -40c t a = +25c t a = +85c
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages _______________________________________________________________________________________ 9 v gen v r ac-coupled +25a -25a 10mv/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 -250a 10mv/div lm4050-2.5v load-transient response lm4050 toc08 10s/div i shunt = 1ma 250a r l = 10k?, see figure 1. typical operating characteristics (continued) (i r = 100?, sc70-3 package, t a = +25?, unless otherwise noted.) v gen v r ac-coupled +25a -25a 2mv/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 +2.5ma -2.5ma 20mv/div lm4050-2.5v load-transient response lm4050 toc10 10s/div i shunt = 10ma 2.5ma r l = 1k?, see figure 1. v gen v r ac-coupled +2.5ma -2.5ma 20mv/div lm4050-5.0v load-transient response lm4050 toc11 10s/div i shunt = 10ma 2.5ma r l = 1k?, see figure 1. v gen v r ac-coupled +250a -250a 10mv/div lm4050-5.0v load-transient response lm4050 toc09 10s/div i shunt = 1ma 250a r l = 10k?, see figure 1. 1k? v b + - i shunt v r r l v gen figure 1. load-transient test circuit
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 10 ______________________________________________________________________________________ v in v out lm4050-5.0v startup characteristics lm4050 toc13 04 0 5 0 20 3010 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 typical operating characteristics (continued) (i r = 100?, sc70-3 package, t a = +25?, unless otherwise noted.) v in v out lm4050-2.5v startup characteristics lm4050 toc12 01 6 2 0 812 42 4 2 8 3 2 3 6 response time ( s) 5v 0 0 2v 1v r s = 30k? see figure 2. 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) 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 r s v in 1hz rate 50% duty cycle v r figure 2. startup characteristics test circuit
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages ______________________________________________________________________________________ 11 detailed description the lm4050/lm4051 shunt references use the bandgap principle to produce a stable, accurate volt- age. the device behaves similarly to an ideal zener diode; a fixed voltage is maintained across its output terminals when biased with 60? to 15ma of reverse current. the lm4050/lm4051 clamps to a voltage of one diode drop below ground when biased with for- ward currents up 10ma. figure 3 shows a typical operating circuit. the lm4050/lm4051 are ideal for providing stable refer- ences 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 sinking 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 ) variations, 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 60? 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 r s is bounded by the following equation: [v s(min) - v r ] / [60? + i load(max) ] > r s > [v s(max) - v r ] / [20ma + i load(min) ] choosing a larger resistance minimizes the total power dis- sipation in the circuit by reducing the shunt current (p d(total) = v s i shunt ). provide a safety margin to incorporate the worst-case tolerance of the resistor used. ensure that the resistor? power rating is adequate, using the following general power equation: pd r = i shunt (v s(max) - v shunt ) output capacitance the lm4050/lm4051 do not require external capacitors for frequency stability and are stable for any output capacitance. temperature performance the lm4050/lm4051 typically exhibit output voltage temperature coefficients within ?5ppm/?. the polari- ty of the temperature coefficients may be different from one device to another; some may have positive coeffi- cients, and others may have negative coefficients. high temperature operation the maximum junction temperature of the lm4050/ lm4051 is +150?. the maximum operating temperature for the lm4050/lm4051_e_ is +125?. at a maximum load current of 15ma and a maximum output voltage of 5v, the parts dissipate 75mw of power. the power dissi- pation limits of the 3-pin sc70 call for a derating value of 2.17mw/? above +70? and thus for 75mw of power dissipation, the parts self-heat to 35.56? above ambient temperature. if the ambient temperature is +125?, the parts operate at 159.56?, thereby exceeding the maxi- mum junction temperature value of +150?. 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 con- spire to raise the device temperature beyond that listed in the absolute maximum ratings . either reduce the out- put load current or the ambient temperature to keep the part within the limits. figure 3. typical operating circuit lm4050 i load i shunt r s v s v r i shunt + i load pin description 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/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages 12 ______________________________________________________________________________________ part o u t pu t vo l t a g e ( v) i n i t i a l a c c u r a c y ( % ) tempco (ppm/_ c) temp range pin- package top mark lm4050 aem3-2.1+t 2.048 0.1 50 -40? to +125? 3 sot23 fztr lm4050aex3-2.1+t 2.048 0.1 50 -40? to +125? 3 sc70 asm lm4050bem3-2.1+t 2.048 0.2 50 -40? to +125? 3 sot23 fzts lm4050bex3-2.1+t 2.048 0.2 50 -40? to +125? 3 sc70 asn lm4050cem3-2.1+t 2.048 0.5 50 -40? to +125? 3 sot23 fztt lm4050cex3-2.1+t 2.048 0.5 50 -40? to +125? 3 sc70 aso lm4050aem3-2.5+t 2.500 0.1 50 -40? to +125? 3 sot23 fztu lm4050aex3-2.5+t 2.500 0.1 50 -40? to +125? 3 sc70 asp lm4050bem3-2.5+t 2.500 0.2 50 -40? to +125? 3 sot23 fztv lm4050bex3-2.5+t 2.500 0.2 50 -40? to +125? 3 sc70 asq lm4050cem3-2.5+t 2.500 0.5 50 -40? to +125? 3 sot23 fztw lm4050cex3-2.5+t 2.500 0.5 50 -40? to +125? 3 sc70 asr lm4050aem3-3.0+t 3.000 0.1 50 -40? to +125? 3 sot23 fztx lm4050aex3-3.0+t 3.000 0.1 50 -40? to +125? 3 sc70 ass lm4050bem3-3.0+t 3.000 0.2 50 -40? to +125? 3 sot23 fzty lm4050bex3-3.0+t 3.000 0.2 50 -40? to +125? 3 sc70 ast lm4050cem3-3.0+t 3.000 0.5 50 -40? to +125? 3 sot23 fztz lm4050cex3-3.0+t 3.000 0.5 50 -40? to +125? 3 sc70 asu lm4050aex3-3.3+t 3.300 0.1 50 -40? to +125? 3 sc70 aoj lm4050aex3-3.3/v+t 3.300 0.1 50 -40? to +125? 3 sc70 +aue lm4050bex3-3.3+t 3.300 0.2 50 -40? to +125? 3 sc70 aok lm4050cex3-3.3+t 3.300 0.5 50 -40? to +125? 3 sc70 aol lm4050aem3-4.1+t 4.096 0.1 50 -40? to +125? 3 sot23 fzua lm4050aex3-4.1+t 4.096 0.1 50 -40? to +125? 3 sc70 asv lm4050bem3-4.1+t 4.096 0.2 50 -40? to +125? 3 sot23 fzub lm4050bem3-4.1/v+t 4.096 0.2 50 -40? to +125? 3 sot23 +fzvl lm4050bex3-4.1+t 4.096 0.2 50 -40? to +125? 3 sc70 asw lm4050cem3-4.1+t 4.096 0.5 50 -40? to +125? 3 sot23 fzuc lm4050cex3-4.1+t 4.096 0.5 50 -40? to +125? 3 sc70 asx lm4050aem3-5.0+t 5.000 0.1 50 -40? to +125? 3 sot23 fzud lm4050aex3-5.0+t 5.000 0.1 50 -40? to +125? 3 sc70 asy lm4050bem3-5.0+t 5.000 0.2 50 -40? to +125? 3 sot23 fzue lm4050bex3-5.0+t 5.000 0.2 50 -40? to +125? 3 sc70 asz lm4050cem3-5.0+t 5.000 0.5 50 -40? to +125? 3 sot23 fzuf lm4050cem3-5.0/v+t 5.000 0.5 50 -40? to +125? 3 sot23 +fzvm lm4050cex3-5.0+t 5.000 0.5 50 -40? to +125? 3 sc70 ata lm4051 aem3-1.2+t 1.225 0.1 50 -40? to +125? 3 sot23 fzto lm4051aex3-1.2+t 1.225 0.1 50 -40? to +125? 3 sc70 asj lm4051bem3-1.2+t 1.225 0.2 50 -40? to +125? 3 sot23 fztp lm4051bex3-1.2+t 1.225 0.2 50 -40? to +125? 3 sc70 ask lm4051cem3-1.2+t 1.225 0.5 50 -40? to +125? 3 sot23 fztq lm4051cex3-1.2+t 1.225 0.5 50 -40? to +125? 3 sc70 asl ordering information
lm4050/lm4051 50ppm/? precision micropower shunt voltage references with multiple reverse breakdown voltages ______________________________________________________________________________________ 13 chip information process: bicmos package information for the latest package outline information and land patterns (footprints), go to www.maxim-ic.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. 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/? precision micropower shunt voltage references with multiple reverse breakdown voltages maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2011 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history 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

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