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general description the max4373/max4374/max4375 low-cost, micropow- er, high-side current-sense supervisors contain a high- side current-sense amplifier, bandgap reference, and comparator with latching output. they feature a voltage output that eliminates the need for gain-setting resistors, making them ideal for today? notebook computers, cell phones, and other systems where battery/dc current monitoring is critical. high-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. the 0 to +28v input common-mode range is independent of the supply voltage, which ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge. the comparator output of the max4373/max4374/ max4375 is latched to provide a turn-off flag that doesn? oscillate. in addition, the max4374/max4375 contain a second comparator for use in window-detec- tion functions. the max4373/max4374/max4375 are available in three different gain versions (t = +20v/v, f = +50v/v, h = +100v/v) and use an external sense resistor to set the sensitivity of the input voltage to the load current. these features offer a high level of inte- gration, resulting in a simple and compact current- sense solution. the max4373/max4374/max4375 operate from a sin- gle +2.7v to +28v supply and consume 50?. they are specified for the extended operating temperature range (-40? to +85?) and are available in 8-pin and 10-pin ?ax packages. applications notebook computers portable/battery-powered systems smart battery packs/chargers cell phones power-management systems general-system/board-level current monitoring precision current sources features ? current-sense amplifier plus internal comparator and bandgap reference with improved accuracy ? 50a supply current ? single +2.7v to +28v operating supply ? 1mv (max) input offset voltage ? 2% (max) full-scale accuracy ? internal bandgap reference (1.6% accuracy) ? latching comparator output ? three gain versions available (+20v/v, +50v/v, +100v/v) ? wide 0 to +28v common-mode range, independent of supply voltage max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics ________________________________________________________________ maxim integrated products 1 max4373 rs- rs+ out cin load/ battery v cc = 2.7v to 28v v in = 0 to 28v gnd v cc r sense + v sense - i load v pull-up (up to 5v) r3 cout c1 0.1 f r2 r1 reset t ypical operating circuit 19-1630; rev 2; 10/03 pin configurations appear at end of data sheet. ordering information continued at end of data sheet. ordering information 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. part temp range pin- package gain (v/v) max4373 teua -40 c to +85 c 8 ?ax +20 max4373tesa -40 c to +85 c 8 so +20 max4373feua -40 c to +85 c 8 ?ax +50 max4373fesa -40 c to +85 c 8 so +50 max4373heua -40 c to +85 c 8 ?ax +100 max4373hesa -40 c to +85 c 8 so +100
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +2.7v to +28v, v rs+ = 0 to +28v, v sense = 0, v reset = 0, r load = 1m ? , 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 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. v cc , rs+, rs- to gnd ...........................................-0.3v to +30v out to gnd ................................................-0.3v to the lesser of (v cc + 0.3v) or +15v cin1, cin2, reset to gnd ........................-0.3v to the lesser of (v cc + 0.3v) or +12v differential input voltage (v rs + - v rs -) ..............................?.3v cout1, cout2 to gnd........................................-0.3v to +6.0v current into any pin..........................................................?0ma continuous power dissipation (t a = +70?) 8-pin ?ax (derate 4.1mw/? above +70?) .............330mw 8-pin so (derate 5.9mw/? above +70?)..................471mw 10-pin ?ax (derate 5.6mw/? above +70?) ...........444mw 14-pin so (derate 8.3mw/? above +70?)................667mw operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? mv parameter symbol min typ max units -25 2.0 input bias current i rs+ 0 2.5 ? leakage current i rs+, i rs- ?.015 ?.5 ? supply current i cc 50 100 ? i rs- 04 -50 4 full-scale sense voltage (note 4) v sense 150 170 mv 100 120 common-mode input range (note 3) operating voltage range (note 2) v cc 2.7 28 v v cmr 028 v common-mode rejection cmr 85 db out voltage high v cc - v oh 0.25 v conditions v rs+ 2v v rs+ > 2v v cc = 0 v rs+ > 2v, v sense = 5mv v rs+ > 2v v rs+ 2v v cc = 2.7v, i out = -500? gain = +20v/v, +50v/v gain = +100v/v v rs+ > 2v input offset voltage v os 0.1 1 v cc = v rs+ = 12v (note 11) t a = +25? t a = t min to t max 2 8.5 65 i out = 100? i out = 10? out voltage low v out 2.5 mv v cc = 2.7v ?.30 ? t a = +25? v sense = 100mv (note 6) ? v cc = 12v, v rs+ = 12v t a = t min to t max ?.35 ? v cc = 28v, v rs+ = 28v t a = +25? ? t a = t min to t max ?.0 v cc = 12v, v rs+ = 0.1v v sense = 6.25mv, v cc = 12v, v rs+ = 12v (note 7) total out voltage error (note 5) v out ?.0 %
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = +2.7v to +28v, v rs+ = 0 to +28v, v sense = 0, v reset = 0, r load = 1m ? , t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) ?.3 ?.7 ?.7 t a = -40? to +85? t a = +25? v sense = 20mv to 100mv, v cc = 12v, v rs+ = 12v, gain = 100 output low voltage v ol 0.6 v i sink = 1ma propagation delay 4 ? c l = 10pf, r l = 10k ? pull-up to 5v, 5mv of overdrive input bias current i b ?.2 ?5 na comparator hysteresis -9 mv 0.1 ms saturation recovery time (note 8) v cc = 12v, v rs+ = 12v, c load = 10pf db ms power-supply rejection power-up time to 1% of final value psr 20 v sense = 100mv to 6.25mv v sense = 6.25mv to 100mv ?.7 t a = -40? to +85? t a = +25? +50 +100 max437_f max437_h v sense = 6.25mv v sense = 100mv, gain = +100v/v v sense = 100mv, gain = +50v/v v sense = 100mv, gain = +20v/v 50 110 120 parameter symbol min typ max units 72 87 out output resistance r out 1.5 ? capacitive load stability 1000 pf out settling time to 1% of final value 20 ? 0.5 comparator threshold v th 590 600 610 mv gain -3db bandwidth bw 200 khz a v +20 v/v gain accuracy ? a v ?.3 ?.7 % conditions v out = 2v, v rs+ > 2v v sense = 100mv no sustained oscillations gain = +20v/v, v cc = 12v, v rs+ = 12v, c load = 10pf v sense = 100mv, c load = 10pf, v cc = 12v, v rs+ = 12v t a = +25? v rs+ = 12v, v cc = 12v, c load = 10pf max437_t v sense = 20mv to 150mv; v cc = 12v; v rs+ = 12v; gain = 20, 50 586 614 t a = t min to t max comparator (note 9)
0 20 10 40 30 50 60 01015 5202 530 supply current vs. supply voltage max4373 toc01 supply voltage (v) supply current ( a) max4373 max4374/max4375 v sense = 5mv 44 45 46 47 48 49 50 51 52 010 515202 530 supply current vs. common-mode voltage max4373 toc02 common-mode voltage (v) supply current ( a) max4374/max4375 max4373 v sense = 5mv -2.0 -0.5 -1.0 -1.5 0 0.5 1.5 1.0 2.0 268 410121 416182022242628 total output error vs. supply voltage max4373 toc03 supply voltage (v) output error (%) a v = +100v/v a v = +20v/v a v = +50v/v v sense = 100mv t ypical operating characteristics (v rs+ = +12v, v cc = +12v, r load = 1m ? , v reset = 0, v sense = 100mv, v pull-up = +5v, r pull-up = 10k ? , t a = +25?, unless otherwise noted.) max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 4 _______________________________________________________________________________________ note 1: all devices are 100% production tested at t a = +25?. all temperature limits are guaranteed by design. note 2: guaranteed by psr test. note 3: guaranteed by out voltage error test. note 4: guaranteed by gain accuracy test. output voltage is internally clamped not to exceed 12v. note 5: total out voltage error and full-scale accuracy are the sum of gain and offset voltage errors. note 6: measured at i out = -500? (r load = 4k ? for gain of +20v/v, r load = 10k ? for gain of +50v/v, r load = 20k ? for gain of +100v/v). note 7: +6.25mv = 1/16 of +100mv full-scale voltage. note 8: the device will not experience phase reversal when overdriven. note 9: all comparator tests are done with v rs+ = +12v. note 10: v pull-up is defined as an externally applied voltage through a resistor to pull up the comparator output. note 11: v os is extrapolated from the gain accuracy test. electrical characteristics (continued) (v cc = +2.7v to +28v, v rs+ = 0 to +28v, v sense = 0, v reset = 0, r load = 1m ? , t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) v cc = 28v, v pull-up = 5v (note 10) conditions ? 1 output high leakage current units min typ max symbol parameter v 2.0 v ih reset input high voltage v 0.8 v il reset input low voltage v il = 0, v ih = 5.5v, v cc = 28v ? -0.5 0.5 i il , i ih logic input current ? 3 t rpd reset propagation delay ? 1.5 t rpw minimum reset pulse width
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics _______________________________________________________________________________________ 5 5 4 3 2 1 0 -1 -2 -3 -4 -5 268 4101 21416182022242628 total output error vs. supply voltage max4373 toc04 supply voltage (v) output error (%) a v = +50v/v a v = +20v/v a v = +100v/v v sense = 6.25mv -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 050 25 75 100 125 150 total output error vs. sense voltage max4373 toc05 v sense (mv) output error (%) a v = +50v/v a v = +20v/v a v = +100v/v v cc = +5.5v -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 050 25 75 100 125 150 total output error vs. sense voltage max4373 toc06 v sense (mv) output error (%) a v = +50v/v a v = +100v/v a v = +20v/v 0 1.0 0.5 2.0 1.5 2.5 3.0 05075 25 100 125 150 total output error vs. sense voltage max4373 toc07 v sense (mv) output error (%) a v = +50v/v a v = +20v/v a v = +100v/v v cc = +28v 12 10 8 6 4 2 -2 0 268 4101 21416182022242628 total output error vs. common-mode voltage max4373 toc08 common-mode voltage (v) output error (%) a v = +50v/v a v = +100v/v a v = +20v/v input output 20 s/div 200mv 600mv 30mv 10mv small-signal pulse response (a v = +20v/v) max4373 toc09 input output 20 s/div 500mv 1.5v 30mv 10mv small-signal pulse response (a v = +50v/v) max4373 toc10 t ypical operating characteristics (continued) (v rs+ = +12v, v cc = +12v, r load = 1m ? , v reset = 0, v sense = 100mv, v pull-up = +5v, r pull-up = 10k ? , t a = +25?, unless otherwise noted.) input output 20 s/div 1v 3v 30mv 10mv small-signal pulse response (a v = +100v/v) max4373 toc11
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 6 _______________________________________________________________________________________ t ypical operating characteristics (continued) (v rs+ = +12v, v cc = +12v, r load = 1m ? , v reset = 0, v sense = 100mv, v pull-up = +5v, r pull-up = 10k ? , t a = +25?, unless otherwise noted.) input output 20 s/div 1v 3v 150mv 50mv large-signal pulse response (a v = +20v/v) max4373 toc12 input output 20 s/div 2.5v 7.5v 150mv 50mv large-signal pulse response (a v = +50v/v) max4373 toc13 input output 20 s/div 500mv 9.5v 95mv 5mv large-signal pulse response (a v = +100v/v) max4373 toc14 0 -10 -100 10 100 1k 10k 100k common-mode rejection vs. frequency -50 -60 -70 -80 -90 max4373 toc15 frequency (hz) cmr (db) -40 -30 -20 0 -10 -100 10 100 1k 10k 100k power-supply rejection vs. frequency -50 -60 -70 -80 -90 max4373 toc16 frequency (hz) psr (db) -40 -30 -20 -5 -2 -3 -4 -1 0 1 2 3 4 5 1k 100k 10k 1000k small-signal gain vs. frequency max4373 toc17 frequency (hz) gain (db) a v = +50v/v a v = +100v/v a v = +20v/v 5 4 -5 1k 10k 100k large-signal gain vs. frequency -3 -4 max4373 toc18 frequency (hz) gain (db) 0 -1 -2 3 2 1 v in = 100mvp-p (20, 50) v in = 50mvp-p (100) a v = +50v/v a v = +20v/v a v = +100v/v
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics _______________________________________________________________________________________ 7 590 593 592 591 594 595 596 597 598 599 600 010 5152 02530 comparator trip point vs. supply voltage max4373 toc21 supply voltage (v) trip point (mv) input 125mv/div output 2.5v/div 2 s/div comparator propagation delay max4373 toc22 v od = 5mv v cc output 100 s/div 0 2v 6v 0 power-up delay max4373 toc19 a v = +20v/v output v cc 5v 5v 0 0 comparator power-up delay max4373 toc20 v cc = v pull-up 10?/div 2 2.4 2.2 2.8 3.0 2.6 3.4 3.6 3.2 3.8 080 40 120 160 20 100 60 140 180 200 comparator propagation delay vs. overdrive voltage max4373 toc24 overdrive voltage (mv) progagation delay ( s) t ypical operating characteristics (continued) (v rs+ = +12v, v cc = +12v, r load = 1m ? , v reset = 0, v sense = 100mv, v pull-up = +5v, r pull-up = 10k ? , t a = +25?, unless otherwise noted.) 0 2 1 4 3 6 5 7 -50 -10 10 -30 30 50 70 90 comparator propagation delay vs. temperature max4373 toc26 temperature (?) propagation delay ( s) v od = 5mv
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 8 _______________________________________________________________________________________ t ypical operating characteristics (continued) (v rs+ = +12v, v cc = +12v, r load = 1m ? , v reset = 0, v sense = 100mv, v pull-up = +5v, r pull-up = 10k ? , t a = +25?, unless otherwise noted.) 0.8 1.2 1.0 1.6 1.4 1.8 2.0 01015 5202530 comparator reset voltage vs. supply voltage max4373 toc27 supply voltage (v) reset voltage (v) 0 20 10 50 40 30 80 70 60 90 00.6 0.8 0.2 0.4 1.0 1.2 1.4 1.6 comparator v ol vs. i sink max4373 toc28 i sink (ma) v ol (mv) input output 10 s/div 0 5v 750mv 250mv comparator ac response max4373 toc31 0 0.2 0.6 0.4 0.8 1.0 -60 -20 0 -40 20 40 6 080 100 total output error vs. temperature max4373 toc33 temperature ( c) total output error (%) 0 10 30 20 50 60 40 70 -60 -20 0 -40 20 40 60 80 100 supply current vs. temperature max4373 toc32 temperature (?) supply current ( a) max4374 max4375 max4373 v sense = 5mv 595 597 596 599 598 601 600 602 604 603 605 -60 -20 0 -40 20 40 60 80 100 comparator trip point vs. temperature max4373 toc35 temperature ( c) comparator trip point (mv) 0 0.2 0.6 0.4 0.8 1.0 -60 -20 0 -40 20 4 06080100 gain accuracy vs. temperature max4373 toc34 temperature (?) gain accuracy (%) a v = +20v/v, +50v/v a v = +100v/v
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics _______________________________________________________________________________________ 9 function detailed description the max4373 high-side current-sense supervisor fea- tures a high-side current-sense amplifier, bandgap ref- erence, and comparator with latching output to monitor a supply for an overcurrent condition (figure 1). the latching output allows the comparator to shut down a power supply without oscillations. the max4374/ max4375 offer an additional comparator to allow win- dow detection of the current. current-sense amplifier the internal current-sense amplifier features a 0v to +28v input common-mode range that is independent of the supply voltage. with this feature, the device can monitor the output current of a battery in deep dis- charge and also high-side current-sensing voltages exceeding v cc . the current-sense amplifier is also suitable for low-side current sensing. however, the total output voltage error will increase when v rs+ falls below 2v, as shown in the electrical characteristics and typical operating characteristics . pin description rs- rs+ out cin2 gnd cin1 load v in = 0 to 28v v cc reset 0.6v bandgap reference r sense + v sense - v pull-up (up to 5v) r2 r1 r4 r5 v pull-up (up to 5v) r6 max4374 (max4375) r3 cout1 cout2 current- sense amplifier + - + (-) - (+) figure 1. functional diagram function name 1 1 v cc 2 2 out pin 3 3 cin1 4 cin2 7 cout2 6 8 cout1 5 6 reset 4 5 gnd n.c. 8 10 rs+ 7 9 rs- supply voltage input 1 2 4 5 10 11 8 7 3, 6, 9, 12 14 13 max4374/max4375 voltage output. v out is proportional to v sense (v rs+ - v rs- ). max4373 comparator input 1. positive input of an internal comparator. the nega- tive terminal is connected to a 0.6v internal reference. comparator input 2. terminal of a second internal comparator. the pos- itive terminal for the max4374 and the negative terminal for the max4375. the other terminal is connected to a 0.6v internal reference. open-drain comparator output. output of the second unlatched inter- nal comparator. open-drain comparator output. latching output of the comparator con- trolled by cin1. connect reset to gnd to disable the latch. reset input. resets the output latch of the comparator at cin1. max ground max/so so no connection. not internally connected. power connection to the external sense resistor load-side connection for the external sense resistor
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 10 ______________________________________________________________________________________ internal comparator(s) the max4373/max4374/max4375 contain an open- drain output comparator for current limiting. the com- parator? negative terminal is connected to the internal 600mv reference. the positive terminal is accessible at cin1. when reset is high, the internal latch is active, and once cin1 rises above 600mv, the output latches into the open state. pulsing reset low for 1.5? resets the latch, and holding reset low makes the latch transparent. see reset at power-up section the max4374/max4375 contain an additional open- drain comparator. the negative terminal of the max4374? additional comparator and the positive ter- minal of the max4375? additional comparator are con- nected to the internal 600mv reference as shown in figure 1. the positive terminal of the max4374? addi- tional comparator and the negative terminal of the max4375? additional comparator are accessible at cin2. ___________applications information recommended component values ideally, the maximum load current will develop the full- scale sense voltage across the current-sense resistor. choose the gain version needed to yield the maximum output voltage required for the application: where v sense is the full-scale sense voltage, 150mv for gains of +20v/v and +50v/v or 100mv for a gain of +100v/v. a v is the gain of the device. the minimum supply voltage is v out + 0.25v. note that the output for the gain of +100v/v is internally clamped at 12v. calculate the maximum value for r sense so that the differential voltage across rs+ and rs- does not exceed the full-scale sense voltage: choose the highest value resistance possible to maxi- mize v sense and thus minimize total output error. in applications monitoring high current, ensure that r sense is able to dissipate its own i 2 r loss. if the resis- tor? power dissipation is exceeded, its value may drift or it may fail altogether, causing a differential voltage across the terminals in excess of the absolute maxi- mum ratings. use resistors specified for current-sens- ing applications. overcurrent protection circuit the overcurrent protection circuit, shown in figure 2, uses the max4373 to control an external p-channel mosfet. the mosfet controlled by the max4373 opens the current path under overload conditions. the latched output of the max4373? comparator prevents the circuit from oscillating, and the pushbutton resets the current path after an overcurrent condition. window detection circuit figure 3 shows a simple circuit suitable for window detection. let i over be the minimum load current (i load ) required to cause a low state at cout2, and let i under be the maximum load current required to cause a high state at cout1: where a v is the gain of the device and v ref is the inter- nal reference voltage (0.6v typ). connect cout1 and cout2; the resulting comparator output will be high when the current is inside the cur- rent window and low when the current is outside the window. the window is defined as load currents less than i over and greater than i under . rs- rs+ out cin1 load max4373 gnd cout1 reset pushbutton v cc 2.7v to 5.5v r c figure 2. max4373 overcurrent protection circuit vva out sense v = r v i sense max load sense max () () = i v ra rr r and i v ra rr r under ref sense v over ref sense v = + ? ? ? ? ? ? = + ? ? ? ? ? ? 45 5 12 2
power-supply bypassing it is recommended that v cc be bypassed to gnd with at least a 0.1? ceramic capacitor to isolate the ic from supply voltage transients. it is possible that plugging in/out a battery or ac adapter/charger could cause large, fast line transients (>5v/?) at v cc . the simplest solution is to run v cc from a better regulated supply (+5v for example), since v cc and rs+ (or rs-) do not have to be connected together. for high-speed v cc transients, another solution is to add a resistor in series with the v cc pin and a 0.1? capacitor to create an rc time constant to slow the rise time of the transient. since these current-sense ampli- fiers consume less than 100?, even a 2.5k ? resistor only drops an extra 250mv at v cc . for most applica- tions with fast transients, 1k ? in conjunction with a 0.1? bypass capacitor works well. reset at power-up the reset pin is used to control the latch function of comparator 1. holding reset low (<0.8v) makes the latch transparent and cout1 will respond to changes at cin1, above and below the internal 600mv reference threshold voltage. when reset is high (>2.0v), once cin1 rises above 600mv, cout1 latches into the open-drain off state and remains in this state even if cin1 drops below 600mv. pulsing reset low for at least 1.5? resets the latch. there is no internal circuitry to control the reset function during power-up. to prevent false latching, reset must be held low until the v cc power has risen above the 2.7v minimum operating supply voltage. this is easily accomplished when reset is driven under ? or logic gate control. however, if reset is to be always connected high, add an rc between v cc , reset and gnd (see figure 2). note that reset cannot exceed v cc + 0.3v or +12v, whichever is less. the following formula can be used to determine the appropriate rc value. where t is the maximum time for v cc to reach 2.7v and 0.8v is the maximum reset logic low voltage. for example, a 470k ? resistor and 0.22? capacitor will keep reset low during a power-up time of up to 36ms. a faster power-up time is also safe with the calculated r and c since the capacitor will have even less time to charge. rc t vv v t = ? () = ln . /( . . ) . 27 27 08 0 3514 max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics ______________________________________________________________________________________ 11 rs- rs+ out cin1 cin2 load v cc = 2.7v to 28v v in = 0 to 28v max4375 gnd v cc gnd r5 r4 r sense + v sense - r3 cout1 r2 r1 cout2 i load reset v pull-up (up to 5v) figure 3. max4375 window detector
max4373/max4374/max4375 low-cost, micropower, high-side current-sense amplifier + comparator + reference ics 12 ______________________________________________________________________________________ ___________________chip information transistor count: 390 substrate connected to gnd ordering information (continued) part temp range pin- package gain (v/v) max4374 teub -40 c to +85 c 10 ?ax +20 max4374tesd -40 c to +85 c 14 so +20 max4374feub -40 c to +85 c 10 ?ax +50 max4374fesd -40 c to +85 c 14 so +50 max4374heub -40 c to +85 c 10 ?ax +100 max4374hesd -40 c to +85 c 14 so +100 max4375 teub -40 c to +85 c 10 ?ax +20 max4375tesd -40 c to +85 c 14 so +20 max4375feub -40 c to +85 c 10 ?ax +50 max4375fesd -40 c to +85 c 14 so +50 max4375heub -40 c to +85 c 10 ?ax +100 max4375hesd -40 c to +85 c 14 so +100 1 2 3 4 5 10 9 8 7 6 14 13 12 11 10 9 8 1 2 3 4 5 6 7 1 2 8 7 3 4 6 5 max so max/so rs+ rs- cout1 cout2 cin2 cin1 out v cc gnd rs+ rs- n.c. cout1 cin1 n.c. out v cc cout2 n.c. gnd n.c. cin2 cout1 gnd rs+ rs- out cin1 v cc top view max4374 max4375 max4374 max4375 max4373 reset reset reset pin configurations
low-cost, micropower, high-side current-sense amplifier + comparator + reference ics max4373/max4374/max4375 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 2003 maxim integrated products printed usa is a registered trademark of maxim integrated products. 8lumaxd.eps package outline, 8l umax/usop 1 1 21-0036 j rev. document control no. approval proprietary information title: max 0.043 0.006 0.014 0.120 0.120 0.198 0.026 0.007 0.037 0.0207 bsc 0.0256 bsc a2 a1 c e b a l front view side view e h 0.60.1 0.60.1 ? 0.500.1 1 top view d 8 a2 0.030 bottom view 1 6 s b l h e d e c 0 0.010 0.116 0.116 0.188 0.016 0.005 8 4x s inches - a1 a min 0.002 0.95 0.75 0.5250 bsc 0.25 0.36 2.95 3.05 2.95 3.05 4.78 0.41 0.65 bsc 5.03 0.66 6 0 0.13 0.18 max min millimeters - 1.10 0.05 0.15 dim 10lumax.eps package outline, 10l umax/usop 1 1 21-0061 i rev. document control no. approval proprietary information title: top view front view 1 0.498 ref 0.0196 ref s 6 side view bottom view 0 0 6 0.037 ref 0.0078 max 0.006 0.043 0.118 0.120 0.199 0.0275 0.118 0.0106 0.120 0.0197 bsc inches 1 10 l1 0.0035 0.007 e c b 0.187 0.0157 0.114 h l e2 dim 0.116 0.114 0.116 0.002 d2 e1 a1 d1 min - a 0.940 ref 0.500 bsc 0.090 0.177 4.75 2.89 0.40 0.200 0.270 5.05 0.70 3.00 millimeters 0.05 2.89 2.95 2.95 - min 3.00 3.05 0.15 3.05 max 1.10 10 0.60.1 0.60.1 ? 0.500.1 h 4x s e d2 d1 b a2 a e2 e1 l l1 c gage plane a2 0.030 0.037 0.75 0.95 a1 p ac kag e information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .)

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