for free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. for small orders, phone 1-800-835-8769. general description the max6375?ax6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulat- ed system voltages. each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. these devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 2.5v to 5v. these circuits perform a single function: they assert an output signal whenever the v cc supply voltage falls below a preset threshold. the devices are differentiated by their output logic configurations and preset thresh- old voltages. the max6375/max6378 (push-pull) and max6377/max6380 (open-drain) have an active-low output ( out is logic low when v cc is below v th ). the max6376/max6379 have an active-high push-pull out- put (out is logic high when v cc is below v th ). all parts are guaranteed to be in the correct output logic state for v cc down to 1v. the detector is designed to ignore fast transients on v cc . the max6375/max6376/ max6377 have voltage thresholds between 2.20v and 3.08v in approximately 100mv increments. the max6378/max6379/max6380 have voltage thresholds between 3.30v and 4.63v in approximately 100mv increments. ultra-low supply current of 500na (max6375/max6376/ max6377) makes these parts ideal for use in portable equipment. all six devices are available in space-saving sc70 packages. applications precision battery monitoring load switching/power sequencing power-supply monitoring in digital/analog systems portable/battery-powered equipment features ultra-low 500na supply current (max6375/max6376/max6377) thresholds available from 2.20v to 4.63v in approximately 100mv increments 2.5% threshold accuracy over temperature low cost available in three versions: push-pull out , push-pull out, and open-drain out power-supply transient immunity no external components 3-pin sc70 package max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors ________________________________________________________________ maxim integrated products 1 1 2 3 v cc out (out) gnd ( ) are for max6376/max6379 only. max6375 max6376 max6377 max6378 max6379 max6380 sc70-3 top view pin configuration 19-1721; rev 0; 4/00 ? the max6375/max6376/max6377 are available in factory-pre- set thresholds from 2.20v to 3.08v, in approximately 0.1v incre- ments. the max6378/max6379/max6380 are available in factory-preset thresholds from 3.30v to 4.63v, in approximately 0.1v increments. choose the desired threshold suffix from table 1 and insert it in the blank spaces following r. there are 21 standard versions, with a required order increment of 2500 pieces. sample stock is generally held on the standard versions only (see the selector guide). the required order increment is 10,000 pieces for nonstandard versions (table 2). contact facto- ry for availability. all devices available in tape-and-reel only. * future product?ontact factory for availability. ordering information 3 sc70-3 3 sc70-3 3 sc70-3 -40? to +85? -40? to +85? -40? to +85? max6380 xr_ _-t max6379 xr_ _-t* max6378 xr_ _-t 3 sc70-3 3 sc70-3 3 sc70-3 pin-package temp. range -40? to +85? -40? to +85? -40? to +85? max6377 xr_ _-t max6376 xr_ _-t max6375 xr_ _-t part ? selector guide appears at end of data sheet.
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = full range, t a = -40? to +85?, unless otherwise noted. typical values are at t a = +25? and v cc = 3v.) (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. terminal voltage (with respect to gnd) v cc ...........................................................................-0.3v to +6v out, out (push-pull) ................................-0.3v to (v cc + 0.3v) out (open-drain) .....................................................-0.3v to +6v input current (v cc ) .............................................................20ma output current (out, out ) ................................................20ma continuous power dissipation (t a = +70?) 3-pin sc70 (derate 2.17mw/? above +70?) ...........174mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? junction temperature ......................................................+150? lead temperature (soldering, 10s) .................................+300? note 1: production tested at +25? only. overtemperature limits are guaranteed by design, not production tested. 42 v cc = (v th - 100mv) to (v th + 100mv) i sink = 100?, v cc 1.2v, out asserted 0.4 v ol out output voltage (max6375/max6377/ max6378/max6380) i sink = 1.6ma, v cc > 2.1v, out asserted 0.3 v max6375/76/77 only, v cc = 3.0v for v th 2.93v, v cc = 3.2v for v th > 2.93v, no load i source = 500?, v cc = 3.2v, max6375 only v oh i source = 800?, v cc = 4.5v, v th 4.38v out output voltage (max6375/max6377) i source = 800?, v cc = v th(max) , v th 4.5v v t a = -40? to +85? t a = 0? to +70? conditions ppm/? 40 ? v th /? voltage threshold tempco v v cc operating range units min typ max symbol parameter v cc = (v th + 100mv) to (v th - 100mv) ? 20 propagation delay max6375/max6376/max6377 6.3 max6378/max6379/max6380 9.5 mv voltage threshold hysteresis 0.1 ? open-drain out output leakage current 0.8 ? v cc 0.8 ? v cc 0.8 ? v cc 1.0 5.5 1.2 5.5 t a = -40? to +85? t a = +25? table 1 v th -2.5% v th v th +2.5% v th v v th -1.5% v th v th +1.5% voltage threshold v cc = 5.5v, no load i cc supply current 0.5 1.0 ? 1.0 1.75 i source = 500?, v cc 2.1v, out asserted 0.8 ? v cc 0.8 ? v cc i sink = 1.2ma, v cc 3.2v, out not asserted, max6376 only 0.3 i source = 50?, v cc 1.2v, out asserted v oh v i sink = 3.2ma, v cc 4.5v, out not asserted, v th 4.38v 0.4 i sink = 3.2ma, v cc = v th(max) , v th 4.5v 0.4 v ol out output voltage (max6376/max6379)
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors ______________________________________________________________________________________ 3 __________________________________________typical operating characteristics (v cc = 5, t a = +25?, unless otherwise noted.) 0 0.3 0.2 0.1 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 0 -20 20 40 60 80 supply current vs. temperature max6375-01 temperature ( c) supply current ( a) v cc = 3.3v v cc = 5v v cc = 1.2v 0 50 100 150 200 -40 0 -20 20 40 60 80 propagation delay (falling) vs. temperature max6375-02 temperature (?) propagation delay ( s) v od = 200mv v od = 10mv v od = 100mv v od = 20mv 0 40 20 80 60 120 100 140 -40 0 20 -20 40 60 80 propagation delay (rising) vs. temperature max6375-03 temperature ( c) propagation delay (s) v od = 10mv v od = 20mv v od = 100mv v od = 200mv 500 0 1 100 1000 maximum transient duration vs. threshold overdrive 100 300 400 200 max6375-04 threshold overdrive v th - v cc (mv) maximum transient duration ( s) 10 out/out is asserted above line pin description max6375/max6378 max6377/max6380 max6376 max6379 v cc out out gnd name supply voltage 3 3 active-high output. out remains high while v cc is below the threshold. 2 active-low output. out remains low while v cc is below the threshold. out is open-drain on the max6377/max6380 and push-pull on the max6375/max6378. 2 ground 1 1 function pin
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors 4 _______________________________________________________________________________________ ____________ applications information interfacing to different logic voltage components the max6377/max6380 have an active-low, open- drain output. this output structure will sink current when out is asserted. connect a pull-up resistor from out to any supply voltage up to 5.50v (figure 1). select a resistor value large enough to allow a valid logic low (see electrical characteristics ), and small enough to register a logic high while supplying all input current and leakage paths connected to the out line. negative-going v cc transients these devices are relatively immune to short-duration, negative-going v cc transients (glitches). the typical operating characteristics show the maximum transient duration vs. threshold overdrive graph, for which out- put pulses are not generated. the graph shows the maximum pulse width that a negative-going v cc tran- sient may typically have before the devices issue out- put signals. as the amplitude of the transient increases, the maximum-allowable pulse width decreases. figure 1. interfacing to different logic voltage components table 1. factory-trimmed voltage thresholds factory-trimmed voltage thresholds are available in approximately 100mv increments with a 1.5% room-temperature variance. out suspend p v in v cc v out 3.6v li+ regulated 3.0v v cc dc/dc converter (open-drain) max6377 threshold voltage, v th (v) t a = +25 ct a = -40 c to +85 c part suffix min typ max min max 22 2.167 2.200 2.233 2.145 2.250 23 2.285 2.320 2.355 2.262 2.375 24 2.364 2.400 2.436 2.340 2.460 25 2.462 2.500 2.537 2.437 2.562 26 2.591 2.630 2.669 2.564 2.696 27 2.660 2.700 2.741 2.633 2.768 28 2.758 2.800 2.842 2.730 2.870 29 2.886 2.930 2.974 2.857 3.000 30 2.955 3.000 3.045 2.925 3.075 max6375xr max6376xr max6377xr 31 3.034 3.080 3.126 3.003 3.150
3-pin, ultra-low-power sc70 voltage detectors _______________________________________________________________________________________ 5 table 1. factory-trimmed voltage thresholds (continued) factory-trimmed voltage thresholds are available in approximately 100mv increments with a 1.5% room-temperature variance. table 2. device marking codes and minimum order increments threshold voltage, v th (v) t a = +25 ct a = -40 c to +85 c part suffix min typ max min max 33 3.250 3.300 3.350 3.217 3.383 34 3.349 3.400 3.451 3.315 3.485 35 3.447 3.500 3.552 3.412 3.587 36 3.546 3.600 3.654 3.510 3.690 37 3.644 3.700 3.755 3.607 3.792 38 3.743 3.800 3.857 3.705 3.895 39 3.841 3.900 3.958 3.802 3.997 40 3.940 4.000 4.060 3.900 4.100 41 4.038 4.100 4.161 3.997 4.202 42 4.137 4.200 4.263 4.095 4.305 43 4.235 4.300 4.364 4.192 4.407 44 4.314 4.380 4.446 4.270 4.489 45 4.432 4.500 4.567 4.387 4.612 max6378xr max6379xr max6380xr 46 4.560 4.630 4.699 4.514 4.746 part top mark (sc70) order increment (k) max6375xr22-t adh 2.5 max6375xr23-t adi 2.5 max6375xr24-t 10 max6375xr25-t 10 max6375xr26-t acz 2.5 max6375xr27-t 10 max6375xr28-t 10 max6375xr29-t adj 2.5 max6375xr30-t 10 max6375xr31-t adk 2.5 max6376xr22-t adl 2.5 max6376xr23-t adm 2.5 max6376xr24-t 10 max6376xr25-t 10 max6376xr26-t adn 2.5 max6376xr27-t 10 part top mark (sc70) order increment (k) max6376xr28-t 10 max6376xr29-t ada 2.5 max6376xr30-t 10 max6376xr31-t ado 2.5 max6377xr22-t adp 2.5 max6377xr23-t adb 2.5 max6377xr24-t 10 max6377xr25-t 10 max6377xr26-t adq 2.5 max6377xr27-t 10 max6377xr28-t 10 max6377xr29-t adc 2.5 max6377xr30-t 10 max6377xr31-t adr 2.5 max6378xr33-t 10 max6378xr34-t 10 max6375?ax6380
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors 6 _______________________________________________________________________________________ ___________________chip information transistor count: 419 table 2. device marking codes and minimum order increments (continued) selector guide (standard versions*) *sample stock is generally held on all standard versions. contact factory for availability of nonstandard versions. part top mark (sc70) order increment (k) max6378xr35-t 10 max6378xr36-t 10 max6378xr37-t 10 max6378xr38-t 10 max6378xr39-t 10 max6378xr40-t 10 max6378xr41-t 10 max6378xr42-t 10 max6378xr43-t 10 max6378xr44-t ads 2.5 max6378xr45-t 10 max6378xr46-t add 2.5 max6379xr33-t 10 max6379xr34-t 10 max6379xr35-t 10 max6379xr36-t 10 max6379xr37-t 10 max6379xr38-t 10 max6379xr39-t 10 max6379xr40-t 10 part top mark (sc70) order increment (k) max6379xr41-t 10 max6379xr42-t 10 max6379xr43-t 10 max6379xr44-t ade 2.5 max6379xr45-t 10 max6379xr46-t adt 2.5 max6380xr33-t 10 max6380xr34-t 10 max6380xr35-t 10 max6380xr36-t 10 max6380xr37-t 10 max6380xr38-t 10 max6380xr39-t 10 max6380xr40-t 10 max6380xr41-t 10 max6380xr42-t 10 max6380xr43-t 10 max6380xr44-t adu 2.5 max6380xr45-t 10 max6380xr46-t adf 2.5 part nominal v th (v) max63__xr46-t 4.63 max63__xr44-t 4.38 max63__xr31-t 3.08 max63__xr29-t 2.93 max63__xr26-t 2.63 max63__xr23-t 2.32 max63__xr22-t 2.20
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors _______________________________________________________________________________________ 7 ________________________________________________________package information sc70, 3l.eps
max6375?ax6380 3-pin, ultra-low-power sc70 voltage detectors maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2000 maxim integrated products printed usa is a registered trademark of maxim integrated products. notes
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