general description the MAX6125/max6141/max6145/max6150/max6160 low-dropout, micropower, three-terminal voltage refer- ences offer 2.5v, 4.096v, 4.5v, 5.0v, and adjustable (1.23v to 12.4v) output voltages, respectively. low, 200mv dropout makes these devices ideal for 3v and 5v systems. unlike two-terminal references that waste battery current and require an external resistor, the max61xx family? supply current is virtually independent of input voltage variations, which translates to longer battery life. initial accuracy for these devices is 1%. the output temperature coefficient is typically 15ppm/?, and guaranteed to be less than 50ppm/? (except for the max6160). the MAX6125/max6141/max6145/ max6150 are available in 3-pin sot23 and 8-pin so packages. the max6160 is available in 4-pin sot143 and 8-pin so packages. features ? 3-pin sot23 package (MAX6125/max6141/max6145/max6150) 4-pin sot143 package (max6160) ? low, 200mv dropout voltage ? 75 a supply current, independent of input voltage ? 15ppm/? typical tempco (50ppm/?, max) ? stable for all capacitive loads up to 10nf ? adjustable output voltage from 1.23v to (v in - 0.2v) (max6160) ? optimized for 3v/5v operation applications 3v/5v systems battery-powered systems portable and hand-held equipment data-acquisition systems instrumentation and process control MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references ________________________________________________________________ maxim integrated products 1 1 2 8 7 in n.c. n.c. n.c. (adj) out n.c. n.c. gnd MAX6125 max6141 max6145 max6150 max6160 so top view 3 4 6 5 ( ) are for max6160 only 1 2 3 gnd out in MAX6125 max6141 max6145 max6150 sot23-3 1 2 4 3 out in adj gnd max6160 sot143-4 pin configurations part MAX6125 esa MAX6125eur-t -40? to +85? -40? to +85? temp range pin- package 8 so 3 sot23-3 ordering information selector guide for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. top mark ebaa part MAX6125 max6141 max6145 max6150 4.096 2.5 preset output voltage (v) pin- package 3 sot23/8 so 3 sot23/8 so 5 4.5 3 sot23/8 so 3 sot23/8 so max6160 adjustable (1.23 to 12.40) 4 sot143/8 so 19-1177; rev. 1; 10/02 ordering information continued on last page. typical operating circuit appears on last page. max6141 esa -40? to +85? 8 so max6141eur-t -40? to +85? 3 sot23-3 ecaa
MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics?ax6125 (v in = 2.7v, i out = 0ma, t a = +25?, unless otherwise noted.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltages with respect to gnd) in .......................................................................-0.3v to +13.5v out, adj...................................................-0.3v to (v in + 0.3v) output short-circuit duration (to in or gnd).............continuous continuous power dissipation (t a = +70?) 8-pin so (derate 5.9mw/? above +70?)....................471mw 3-pin sot23 (derate 4mw/? above +70?).................320mw 4-pin sot143 (derate 4mw/? above +70?)...............320mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +160? lead temperature (soldering, 10s) .................................+300? t a = t min to t max t a = +25? t a = t min to t max t a = t min to t max t a = +25? i sink = 0ma to 1ma i source = 0ma to 1ma t a = t min to t max 0.1hz to 10hz 10hz to 10khz v in = 2.7v to 12.6v, t a = t min to t max v in = 2.7v to 12.6v conditions ?/v 1.7 6 ? i q / ? v in change in supply current vs. change in input voltage v 2.450 2.550 v out output voltage 2.475 2.500 2.525 v 2.7 12.6 v in supply voltage ? 130 i q quiescent supply current 75 100 mv/ma 1.15 10 ? v out / ? i out load regulation 0.4 1 ppm/? 15 50 tcv out output voltage temperature coefficient 15 ? p-p 500 e n output voltage noise ?/v 150 ? v out / ? v in line regulation units min typ max symbol parameter t a = t min to t max t a = +25? t a = t min to t max t a = t min to t max t a = +25? i sink = 0ma to 1ma i source = 0ma to 1ma t a = t min to t max 0.1hz to 10hz 10hz to 10khz v in = 4.3v to 12.6v, t a = t min to t max v in = 4.3v to 12.6v conditions ?/v 1.7 6 ? i q / ? v in change in supply current vs. change in input voltage v 4.015 4.180 v out output voltage 4.055 4.096 4.140 v 4.3 12.6 v in supply voltage ? 130 i q quiescent supply current 78 105 mv/ma 1.65 16 ? v out / ? i out load regulation 0.55 1.6 ppm/? 15 50 tcv out output voltage temperature coefficient 25 ? p-p 700 e n output voltage noise ?/v 250 ? v out / ? v in line regulation units min typ max symbol parameter electrical characteristics?ax6141 (v in = 4.3v, i out = 0ma, t a = +25?, unless otherwise noted.) (note 1)
_______________________________________________________________________________________ 3 MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references electrical characteristics?ax6145 (v in = 4.7v, i out = 0ma, t a = +25?, unless otherwise noted.) (note 1) t a = t min to t max t a = +25? t a = t min to t max t a = t min to t max t a = +25? i sink = 0ma to 1ma i source = 0ma to 1ma t a = t min to t max 0.1hz to 10hz 10hz to 10khz v in = 4.7v to 12.6v, t a = t min to t max v in = 4.7v to 12.6v conditions ?/v 1.7 6 ? i q / ? v in change in supply current vs. change in input voltage v 4.410 4.590 v out output voltage 4.455 4.500 4.545 v 4.7 12.6 v in supply voltage ? 130 i q quiescent supply current 79 105 mv/ma 1.75 18 ? v out / ? i out load regulation 0.6 1.8 ppm/? 15 50 tcv out output voltage temperature coefficient 30 ? p-p 800 e n output voltage noise ?/v 250 ? v out / ? v in line regulation units min typ max symbol parameter t a = t min to t max t a = +25? t a = t min to t max t a = t min to t max t a = +25? i sink = 0ma to 1ma i source = 0ma to 1ma t a = t min to t max 0.1hz to 10hz 10hz to 10khz v in = 5.2v to 12.6v, t a = t min to t max v in = 5.2v to 12.6v conditions ?/v 1.7 6 ? i q / ? v in change in supply current vs. change in input voltage v 4.900 5.100 v out output voltage 4.950 5.000 5.050 v 5.2 12.6 v in supply voltage ? 145 i q quiescent supply current 80 110 mv/ma 1.9 20 ? v out / ? i out load regulation 0.65 2 ppm/? 15 50 tcv out output voltage temperature coefficient 35 ? p-p 900 e n output voltage noise ?/v 150 ? v out / ? v in line regulation units min typ max symbol parameter electrical characteristics?ax6150 (v in = 5.2v, i out = 0ma, t a = +25?, unless otherwise noted.) (note 1)
__________________________________________typical operating characteristics (v in = v in(min) , i out = 0ma, t a = +25?, unless otherwise noted.) 40 2 supply current vs. input voltage MAX6125-toc01 input voltage ( v) supply current ( a) 50 60 70 80 90 100 468101214 valid over v in(min) to v in(max) for each part 110 -50 supply current vs. temperature MAX6125-toc02 temperature (?) supply current ( a) 10 20 30 40 50 70 60 80 90 100 -25 0 25 50 75 100 v in = 10v v in = 3v v in = 5v 0 -50 load regulation (sourcing) vs. temperature MAX6125-toc03 temperature (?) load regulation (mv/ma) 0.2 0.4 0.6 0.8 1.0 -25 0 25 50 75 100 v out = 5.0v (max6150) v out = 4.096v (max6141) v out = 2.5v (MAX6125/max6160) v out = 4.5v (max6145) MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references 4 _______________________________________________________________________________________ electrical characteristics?ax6160 (v in = 2.7v; i out = 0ma; r1 = 215k ? ?.1%, r2 = 208k ? ?.1% (circuit of figure 1); t a = +25?; unless otherwise noted.) (notes 1, 2) t a = t min to t max t a = +25? t a = t min to t max t a = t min to t max t a = +25? i sink = 0ma to 1ma i source = 0ma to 1ma 0.1hz to 10hz 10hz to 10khz v in = 2.7v to 12.6v, t a = t min to t max v in = 2.7v to 12.6v conditions ?/v 1.7 6 ? i q / ? v in change in supply current vs. change in input voltage v 2.450 2.550 v out output voltage 2.475 2.500 2.525 v 2.7 12.6 v in supply voltage ? 130 i q quiescent supply current 75 100 mv/ma 1.15 10 ? v out / ? i out load regulation 0.35 1 v 1.23 v adj adj feedback voltage threshold 15 ? p-p 500 e n output voltage noise ?/v 150 ? v out / ? v in line regulation units min typ max symbol parameter note 1: all devices are 100% production tested at t a = +25?, and are guaranteed by design for t a = t min to t max as specified. note 2: r1 and r2 program the output voltage in the 1.23v to (v in - 0.2v) range (see the setting the max6160 output voltage section). t a = t min to t max v 1.23 v in - 0.2 output voltage range t a = t min to t max ppm/? 15 100 tcv out output voltage temperature coefficient v adj = 1.23v na 70 i adj adj input current
MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references ________________________________________________________________________________________ 5 0 -50 load regulation (sinking) vs. temperature MAX6125-toc04 temperature (?) load regulation (mv/ma) 0.5 1.0 1.5 2.0 2.5 -25 0 25 50 75 100 v out = 5.0v (max6150) v out = 4.096v (max6141) v out = 2.5v (MAX6125/max6160) v out = 4.5v (max6145) 2.496 0 MAX6125/max6160 output voltage vs. source current MAX6125-toc05 source current (ma) output voltage (v) 2.497 2.498 2.499 2.500 2.501 0.5 1.0 1.5 2.0 2.5 4.092 0 max6141 output voltage vs. source current MAX6125-toc06 source current (ma) output voltage (v) 4.093 4.094 4.095 4.096 4.097 0.5 1.0 1.5 2.0 2.5 4.496 0 max6145 output voltage vs. source current MAX6125-toc07 source current (ma) output voltage (v) 4.499 4.498 4.497 4.500 4.501 0.5 1.0 1.5 2.0 2.5 70 -50 MAX6125/max6160 dropout voltage vs. temperature MAX6125-toc10 temperature (?) dropout voltage (mv) 100 90 80 110 i out = 1ma 120 -25 0 25 50 75 100 4.996 0 max6150 output voltage vs. source current MAX6125-toc08 source current (ma) output voltage (v) 4.999 4.998 4.997 5.000 5.001 0.5 1.0 1.5 2.0 2.5 0 0.0 dropout voltage vs. source current MAX6125-toc09 source current (ma) dropout voltage (mv) 50 100 150 200 250 300 350 400 0.5 1.0 1.5 2.5 2.0 3.5 3.0 4.0 80 -50 max6141/max6145/max6150 dropout voltage vs. temperature MAX6125-toc11 temperature (?) dropout voltage (mv) 84 88 92 96 100 -25 0 25 50 75 100 i out = 1ma 0 -50 max6160 adj input current vs. temperature MAX6125-toc12 temperature (?) adj input current (na) 20 40 60 80 100 120 -25 0 25 50 75 100 v in = 2.7v v adj = 1.23v ____________________________typical operating characteristics (continued) (v in = v in(min) , i out = 0ma, t a = +25?, unless otherwise noted.)
MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references 6 _______________________________________________________________________________________ 10 s/div a = output current, 1ma/div, i out = 0ma to -1ma b = output voltage, 200mv/div MAX6125 load-transient response (sinking) a b _____________________________typical operating characteristics (continued) (v in = v in(min) , i out = 0ma, t a = +25?, unless otherwise noted.) 10 s/div a = output current, 1ma/div, i out = 0ma to 1ma b = output voltage, 50mv/div MAX6125 load-transient response (sourcing) a b 5 s/div a = input voltage, 100mv/div, v in = 3v ?0mv b = output voltage, 20mv/div MAX6125 line-transient response a b 0v 0v 1s/div MAX6125 0.1hz to 100hz noise 50 v/div -1.0 2 change in output voltage vs. input voltage MAX6125-toc013 input voltage (v) change in output voltage * (%) -0.5 0 0.5 1.0 468101214 valid over v in(min) to v in(max) for each part -0.3 -50 change in output voltage vs. temperature MAX6125-toc014 temperature (?) change in output voltage** (%) -0.2 -0.1 0 0.1 0.2 -25 0 25 50 75 100 0 0.0001 power-supply rejection ratio vs. frequency MAX6125-toc15 frequency (khz) psrr (db) 20 40 60 80 120 100 140 0.001 0.01 0.1 1 10 * with respect to output voltage at v in = v in(min) . ** with respect to output voltage at t a = +25?.
_______________________________________________________________________________________ 7 _____________ applications information setting the max6160 output voltage set the output voltage on the max6160 by connecting a resistor divider between out, adj, and gnd (figure 1). choose r1 according to the following equa- tion: r1 = (1.06 x 10 5 ) (v out / v adj ) ? where v th = 1.23v. the scaling factor (1.06 x 10 5 ) compensates for the max6160's change in adj input current over temperature. when r1 is chosen correctly, the change in voltage across r1 caused by the adj input current is properly cancelled. choose r1 to within ?% of this calculated value (nearest standard value plus specified resistor tolerance) to optimize the output voltage temperature coefficient. using r1 = 215k ? : which is also the nearest 0.1% resistor value. choose r2 according to the following equation: r2 = r1 / (v out / v adj - 1) for example, a 2.5v output requires r1 = (1.06 x 10 5 ) (2.5v / 1.23v) 215k ? , which is the nearest standard- value 0.1% resistor. input bypassing for the best line-transient performance, decouple the input with a 0.1? ceramic capacitor, as shown in the typical operating circuit . locate the capacitor as close to the device pin as possible. where transient performance is less important, no capacitor is necessary. output bypassing the MAX6125/max6141/max6145/max6150/max6160 do not require an output capacitor. they are stable for capacitive loads from 0nf to 10nf. if your application requires an output charge reservoir (e.g., to decouple the reference from a dac? input), then make sure that the total output capacitive load does not exceed 10nf for optimum settling-time performance. MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references ______________________________________________________________pin description adjustable output voltage feedback input. connect a resistor divider between out, adj, and gnd (figure 1). adj 5** input voltage in 8 ground gnd 4 no connection. not internally connected. n.c. 2, 3, 5*, 6, 7 reference output out 1 function name so 1 3 2 sot23-3 2 3 1 4 sot143 * except max6160. ** max6160 only. max6160 out adj gnd in r1 = 1.06 x 10 5 ( ) ? v out v adj r2 = v out v adj ( - 1 ) r1 v adj = 1.23v v out v in r1 r2 figure 1. max6160 adjustable output circuit pin r2 = 215k 2.5v 1.23v -1 208k ? ? ? ? ? ? ? ?
MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references 8 _______________________________________________________________________________________ ordering information (continued) part max6145 esa max6145eur-t -40? to +85? -40? to +85? 8 so 3 sot23-3 temp range pin- package edaa top mark max6160eus-t -40? to +85? 4 sot143-4 jxaa max6150 esa max6150eur-t -40? to +85? -40? to +85? 8 so 3 sot23-3 eeaa max6160 esa -40? to +85? 8 so chip information transistor count: 42 t ypical operating circuit MAX6125 max6141 max6145 max6150 in v in = (v out + 200mv) to 12.6v out 0.1 f* *optional gnd v out
MAX6125/max6141/max6145/max6150/max6160 sot23, low-cost, low-dropout, 3-terminal voltage references 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 _____________________ 9 2002 maxim integrated products printed usa is a registered trademark of maxim integrated products. sot23 l.eps package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation g o t o w w w . m a x i m - i c . c o m / p a c k a g e s . )
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