general description the max6700/max6710 precision triple/quad voltage microprocessor (p) supervisory circuits monitor up to four system-supply voltages and assert a single reset if any supply voltage drops below its preset threshold. these devices significantly reduce system size and component count while improving reliability compared to separate ics or discrete components. a variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances with minimal external component requirements. the max6710 includes internally fixed options for monitoring 5.0v, 3.3v, 3.0v, 2.5v, and 1.8v supplies with -5% or -10% tolerances. the max6710 is also available with one to three adjustable threshold options to monitor voltages down to 0.62v. the max6700 monitors three voltages with adjustable thresholds down to 0.62v. a single active-low output asserts when any monitored input falls below its associated threshold. the open-drain output has a weak internal pullup (10a) to in2. for the max6710, reset remains low for the reset timeout period (140ms min) after all voltages rise above the selected threshold. the max6700 acts as a voltage detector with a propagation delay of 5s after all monitored voltages exceed their thresholds. the output remains valid as long as either in2 or in2 input voltage remains above 1v (max6710) or v cc is above 2v (max6700/max6710q). the max6700/max6710 are available in a small 6-pin sot23 package and operate over the extended (-40c to +85c) temperature range. applications telecommunications high-end printers desktop and notebook computers data storage equipment networking equipment industrial equipment set-top boxes servers/workstations features monitor up to four power-supply voltages precision factory-set reset threshold options for 5.0v, 3.3v, 3.0v, 2.5v, and 1.8v supplies adjustable voltage threshold monitors down to 0.62v with 1.5% accuracy low 35a supply current open-drain reset output with 10a internal pullup 5s propagation delay (max6700) 140ms (min) reset timeout period (max6710) reset valid to in1 = 1v or in2 = 1v immune to short monitored supply transients guaranteed from -40c to +85c small 6-pin sot23 package 19-2324; rev 5; 8/16 pin configuration appears at end of data sheet. selector guide with top marks appears at end of data sheet. insert the desired suffix letter from the selector guide into the blank to complete the part number. there is a 2500 piece mini - mum order increment requirement on the sot package. these devices are available in tape-and-reel only. devices are available in both leaded and lead-free packaging. specify lead-free by replacing -t with +t when ordering. part temp range pin-package max6700 ut-t -40c to +85c 6 sot23-6 max6710 _ut-t -40c to +85c 6 sot23-6 max6710fut-t -40c to +105c 6 sot23-6 max6710kut-t -40c to +105c 6 sot23-6 max6700max6710 in1in2 in3 in4 reset gnd supplies to be monitored p max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package typical operating circuit ordering information downloaded from: http:///
v cc , in_, reset to gnd .......................................-0.3v to +6v continuous reset current ...............................................20ma continuous power dissipation 6-pin sot23 (derate 8.7mw/c above +70c) .......695.7mw operating temperature range ......................... -40c to +105c storage temperature range ............................ -65c to +150c junction temperature ......................................................+150c lead temperature (soldering, 10s) ................................. +300c (v in2 = 1v to 5.5v, t a = -40c to +105c, unless otherwise noted. typical values are at v in2 = 3.0v to 3.3v, t a = +25c.) (note 1) parameter symbol conditions min typ max units operating voltage range (note 2) v cc max6700/max6710q 2.0 5.5 v v in2 all others (note 3) t a = 0c to +105c 1.0 5.5 t a = -40c to +105c 1.2 5.5 input current i in_ in_ = nominal input voltage (for 1.8v, 2.5v, and 5.0v supplies) 25 45 a in2 = nominal input voltage (for 3.0v and 3.3v supplies) (note 4) 55 115 v in1 = 0 to 0.85v (for adjustable thresholds) 1 v in3 , v in4 = 0 to 0.85v (for adjustable thresholds) 0.2 i cc max6700/max6710q only, v cc = 5.5v 35 65 threshold voltage v th in_ decreasing 5v (-5%) 4.50 4.63 4.75 v 5v (-10%) 4.25 4.38 4.50 3.3v (-5%) 3.00 3.08 3.15 3.3v (-10%) 2.85 2.93 3.00 3.0v (-5%) 2.70 2.78 2.85 3.0v (-10%) 2.55 2.63 2.70 2.5v (-5%) 2.25 2.32 2.38 2.5v (-10%) 2.13 2.19 2.25 1.8v (-5%) 1.62 1.67 1.71 1.8v (-10%) 1.53 1.58 1.62 adjustable threshold v th in_ decreasing 0.611 0.620 0.629 v reset threshold hysteresis v hyst in_ increasing relative to in_ decreasing 0.3 %v th reset threshold temperature coeficient tcv th 60 ppm/c in_ to reset delay t rd v in falling at 10mv/s from v th to (v th - 50mv) 30 s propagation delay t pd max6700 only 5 s reset timeout period t rp max6710 only 140 200 280 ms max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package 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 downloaded from: http:///
(v in2 = 1v to 5.5v, t a = -40c to +105c, unless otherwise noted. typical values are at v in2 = 3.0v to 3.3v, t a = +25c.) (note 1) note 1: 100% production tested at t a = +25c. limits over temperature guaranteed by design. note 2: the devices are powered from in2 or v cc (for max6700/max6710q). note 3: the reset output is guaranteed to be in the correct state for in1 or in2 down to 1v. note 4: monitored in2 voltage (3.3v, 3.0v) is also the device power supply. supply current splits as follow s: 25a for the resistor divider (for the monitored voltage) and 30a for other circuits. (v in2 = v cc = 3.0v, t a = +25c) parameter symbol conditions min typ max units reset output low v ol v in2 , v cc = 5v, i sink = 2ma 0.3 v v in2 , v cc = 2.5v, i sink = 1.2ma 0.4 v in2 = 1.0v, i sink = 50a, t a = 0c to +105c 0.3 reset output high v oh v cc 2.0v, i source = 6a, reset deasserted (max6700/max6710q) 0.8 x v cc v v in2 2.0v, i source = 6a, reset deasserted 0.8 x v in2 reset output high source current i oh v in2 2.0v, reset deasserted 10 a 0 2010 5040 30 60 70 80 90 0 1.0 1.5 0.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 in2 input current vs. in2 voltage max6700 toc02 in2 voltage (v) in2 input current (a) -0.10 -0.04-0.06 -0.08 -0.02 0 0.02 0.04 0.06 0.08 0.10 -40 -15 10 35 60 85 normalized threshold error vs. temperature max6700 toc03 temperature (c) normalized threshold error (%) v th = 1.8v v in2 = 3.3v 40 4644 42 48 50 52 54 56 58 60 -40 -15 10 35 60 85 in2 input current vs. temperature max6700 toc01 temperature (c) in2 input current (a) v in2 = 3.3v v in2 = 3v max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 3 electrical characteristics (continued) typical operating characteristics downloaded from: http:///
(v in2 = v cc = 3.0v, t a = +25c) pin name function 1 in1 input voltage 1. see the selector guide for monitored voltages. 2 in2 input voltage 2. see the selector guide for monitored voltages. in2 is the power-supply input for the device. for the max6700/max6710q, v cc is the power-supply input for the device and is not a monitored voltage. v cc 3 in3 input voltage 3. see the selector guide for monitored voltages. 4 in4 input voltage 4. see the selector guide for monitored voltages. 5 gnd ground 6 reset active-low, reset output. reset goes low when any input goes below its speciied threshold. after all inputs rise above their threshold voltage, reset remains low for 5s (max6700) or for 200ms (max6710) before going high. the open-drain reset output has a weak (10a) internal pullup to in2 or v cc . 0 2010 4030 6050 70 9080 100 0 200 300 400 100 500 600 700 900 800 1000 max6700 toc04 maximum in_ transient duration (s) reset asserted above this line reset threshold overdrive (mv) maximum in_ transient duration vs. reset threshold overdrive 0 2010 4030 6050 70 9080 100 0 200 300 400 100 500 600 700 900 800 1000 max6700 toc05 reset threshold overdrive (mv) reset delay vs. reset threshold overdrive (in_ decreasing) reset delay (s) in_100mv/div ac-coupled 10s/div max6700 toc06 reset pullup and pulldown response (c l = 47pf) reset 2v/div 220 222221 223 224 225 226 227 228 229 230 231 232 max6700 toc07 temperature (c) -40 10 -15 35 60 85 reset timeout delay vs. temperature reset timeout delay (s) 2s/div max6700 toc08 reset 2v/div reset propagation delay (max6700) in_2v/div 40s/div max6700 toc09 reset 2v/div in_2v/div reset timeout delay (max6710) max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package maxim integrated 4 www.maximintegrated.com typical operating characteristics (continued) pin description downloaded from: http:///
detailed description the max6700/max6710 are very small, low-power, triple/ quad voltage p supervisory circuits designed to maintain system integrity in multisupply systems ( figure 1 and figure 2 ). the max6710 offers several internally trimmed undervoltage threshold options for monitoring 5.0v, 3.3v, 3.0v, 2.5v, and 1.8v supplies. the devices offer one-to- three adjustable thresholds for monitoring voltages down to 0.62v. the triple/quad voltage monitors include an accurate bandgap reference, precision comparators, and a series of internally trimmed resistor-divider networks to set the factory-fixed reset threshold options. the resistor networks scale the specified in_ reset voltages to match the internal bandgap reference/ comparator voltage. adjustable threshold options bypass the internal resistor networks and connect directly to one of the comparator inputs (use an external resistor-divider network for threshold matching). the max6700/max6710q provide a separate unmonitored power-supply input (v cc ) and three adjustable voltage inputs. each of the internal comparators has a typical hysteresis of 0.3% with respect to its reset threshold. this built-in hysteresis improves the monitors immunity to ambient noise without significantly reducing threshold accuracy. the devices are immune to short in_ transients. see the typical operating characteristics for a glitch immunity graph. figure 1. max6700 functional diagram in1 in3in4 0.62v reference v cc reset max6700 v cc v cc v cc v cc uvlo max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 5 downloaded from: http:///
applications information reset output the max6700 reset output asserts low when any monitored in_ voltage drops below its specified reset threshold and remains low for the propagation delay (5s) after all inputs exceed their thresholds ( figure 3 ). the max6710 provides an extended reset timeout period of 140ms (min). the output is open drain with a weak internal pullup to the monitored in2 or v cc supply (10a typ). for many applications no external pullup resistor is required to interface with other logic devices. an external pullup resistor to any voltage from 0 to 5.5v can overdrive the internal pullup if interfacing to different logic-supply voltages ( figure 4 ). internal circuitry prevents reverse current flow from the external pullup voltage to in2. figure 2. max6710 functional diagram in1 (adj) in2, v cc (3.3v/3v) in3 (2.5v/1.8v) in4 (adj) 0.62v reference nor gate time- out (200ms) in2, v cc reset max6710 all devices are powered from in2, v cc (3.0v/3.3v). reset is valid if v in1 or v in2 is greater than 1v, or if v cc is greater than 2v (max6710q only) uvlo max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 6 downloaded from: http:///
v cc powers the max6700/max6710q and is not a monitored voltage. in2 powers all other options for the max6710 and is a monitored voltage. when any supply drops below its threshold, the reset output asserts low and remains low while either in1 or in2 is above 1.0v. adjustable thresholds the max6700/max6710 offer several monitor options with adjustable reset thresholds. the threshold voltage at each adjustable in_ input is typically 0.62v. to monitor a voltage > 0.62v, connect a resistor-divider network to the circuit as shown in figure 5. v inth = 0.62v x (r1 + r2) / r2 or, solved in terms of r1: r1 = r2 ((v inth / 0.62v) - 1) because the devices have a guaranteed input current of 0.2a (0.4a for in1) on their adjustable inputs, resistor values up to 100k can be used for r2 with < 1% error. the max6700/max6710q include an internal voltage clamp (1.5v typ) at each of the adjustable voltage inputs. an input voltage higher than 1.5v induces a higher input current. unused inputs connect unused monitor inputs to a supply voltage greater in magnitude than their specified threshold voltages. for unused in_ adjustable inputs, connect a 1m series resistor between the unused input and in2 (or v cc ) to limit the bias current. use in2 for normal operation (device power-supply pin). do not connect unused monitor inputs to ground or allow them to float. adding manual reset capability (max6710) figure 6 shows an application circuit adding manual reset to the max6710. depressing the pushbutton switch short- circuits the analog input to ground and initiates a reset pulse. the switch must be open for at least 140ms in order to deassert the reset output. no external switch debounce is required. use a small capacitor to improve noise immunity when using long leads from the push- button switch to the adjustable input. power-supply bypassing and grounding the max6700/max6710 are normally powered from the monitored in2 or from the v cc supply input. all monitored inputs are immune to short supply transients. for higher immunity in noisy applications, connect a 0.1f bypass capacitor from the in2 input to ground. add capacitance to in1, in3, and in4 to increase their noise immunity. figure 3. reset output timing diagram figure 4. interfacing to different logic-supply voltage figure 5. setting the auxiliary monitor v th_ 90% 10% in_ v th_ reset t rp t rd in2 gnd in2 = +3.3v +5v max6700max6710 v cc gnd reset reset 100k ? v ref = 0.62v r2 r1 v inth r1 = r2 ( - 1 ) v inth 0.62v max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 7 downloaded from: http:///
figure 6. adding manual reset capability in1in2 in3 max6710 gnd reset in4(adjustable input) r1 r2 (v cc ) in2 in4 in3 1 6 5 gnd in1 ( ) are for max6700/max6710q only max6700max6710 sot23 top view 2 3 4 reset max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 8 pin conigurationchip information transistor count: 699 process: bicmos downloaded from: http:///
* adjustable voltage based on 0.62v internal threshold. external threshold voltage can be set using an external resistor-divider. ** the max6700 acts as a voltage detector with a 5s propagation delay. the max6710 serves as a micropr ocessor reset circuit with a 140ms (min) reset timeout. part** (suffix in bold) temperature range nominal input voltage supply tolerance (%) top mark in1 (v) in2 (v) in3 (v) in4 (v) max6700ut -40c to +85c adj* v cc adj* adj* n/a abek max6710 a ut -40c to +85c 5 3.3 2.5 adj* 10 aaza max6710 b ut -40c to +85c 5 3.3 2.5 adj* 5 aazb max6710 c ut -40c to +85c 5 3.3 1.8 adj* 10 aazc max6710 d ut -40c to +85c 5 3.3 1.8 adj* 5 aazd max6710 e ut -40c to +85c adj* 3.3 2.5 1.8 10 aaze max6710 f ut -40c to +105c adj* 3.3 2.5 1.8 5 aazf max6710 g ut -40c to +85c 5 3.3 adj* adj* 10 aazg max6710 h ut -40c to +85c 5 3.3 adj* adj* 5 aazh max6710 i ut -40c to +85c adj* 3.3 2.5 adj* 10 aazi max6710 j ut -40c to +85c adj* 3.3 2.5 adj* 5 aazj max6710 k ut -40c to +105c adj* 3.3 1.8 adj* 10 aazk max6710 l ut -40c to +85c adj* 3.3 1.8 adj* 5 aazl max6710 m ut -40c to +85c adj* 3 2.5 adj* 10 aazm max6710 n ut -40c to +85c adj* 3 2.5 adj* 5 aazn max6710 o ut -40c to +85c adj* 3 1.8 adj* 10 aazo max6710 p ut -40c to +85c adj* 3 1.8 adj* 5 aazp max6710 q ut -40c to +85c adj* v cc adj* adj* n/a aazq package type package code outline no. land pattern no. 6 sot u6+1 21-0058 90-0175 max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package www.maximintegrated.com maxim integrated 9 selector guide 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 3 9/14 added ordering information for f option, added extended temperature range information, updated selector guide and package information sections 1, 2, 8, 9 4 11/15 added max6710k with new limits 1, 2, 9 5 8/16 updated max6710 upper operating temperature range and ec limits to 105c 2C3 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. max6700/max6710 low-voltage, high-accuracy, triple/quad voltage p supervisory circuits in sot package ? 2016 maxim integrated products, inc. 10 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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