19-1617; rev 3; 5/13 max6509/max6510 resistor-programmable sot temperature switches for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maximintegrated.com. ________________general description the max6509/max6510 are fully integrated, resistor- programmable temperature switches with thresholds set by an external resistor. they require only one exter- nal resistor to set the temperature threshold within a wide -40? to +125? temperature range. the max6509 provides an open-drain output. the max6510 features three selectable output options: active-low, active-high, and open drain with an internal pull-up resistor. these switches operate with a +2.7v to +5.5v single supply while providing a temperature threshold accura- cy of ?.5? (typ) or ?.7? (max). they typically con- sume 32? supply current. hysteresis is pin selectable to 2? or 10?. the max6509/max6510 are available in 5-pin and 6-pin sot23 packages, respectively. ________________________applications ? temperature monitoring in high-speed computers temperature control temperature alarms fan control automotive ____________________________features ?.5? threshold accuracy 4.7? (max) threshold accuracy (-40? to +125?) temperature threshold set by a 1% external resistor set-hot or set-cold option low 32 a supply current open-drain, push-pull outputs; open-drain with internal pull-up resistor pin-selectable 2? or 10? hysteresis sot23 packages ordering information pin configurations typical operating circuit + denotes a lead(pb)-free/rohs-compliant package. *a minimum order of 2500 pc. is required for sot packages. **see table 1 for selectable output options. gnd v cc out 1 + 5 set max6509 sot23-5 top view 2 34 gnd hyst out, out hyst 16v cc outset set max6510 sot23-6 2 34 5 + gnd ( ) are for max6510. +2.7v to +5.5v hyst gnd (outset) int gnd p 0.1 f v cc v cc set r set out (out) max6509 max6510 top mark adnt adnu aaha aahb 6 sot23-6 -40? to +125? MAX6510HAUT+t** 5 sot23-5 -40? to +125? max6509hauk+t 6 sot23-6 -40? to +125? max6510 caut+t** 5 sot23-5 pin- package temp. range -40? to +125? max6509 cauk+t part*
? max6509/max6510 resistor-programmable sot temperature switches 2 maxim integrated absolute maximum ratings electrical characteristics (v cc = +2.7v to +5.5v, 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. note 1: 100% production tested at t a = +25?. specifications over temperature limits are guaranteed by design. reference to gnd supply voltage (v cc ).................-0.3v to +6v out (max6509) ....................................................-0.3v to +6v out , out (max6510).............................-0.3v to (v cc + 0.3v) set, hyst, outset ..................................-0.3v to (v cc + 0.3v) output current (all pins) .....................................................20ma input current (all pins) ........................................................20ma continuous power dissipation (t a = +70?) 5-pin sot23 (derate 7.1mw/? above +70?).............571mw 6-pin sot23 (derate 8.7mw/? above +70?).............696mw operating temperature range .........................-40? to +125? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? soldering temperature (reflow) .......................................+260? lead temperature (soldering, 10s) .................................+300? 5.5 ?.1 v outset = v cc outset = unconnected out, active high out, open drain v outset = gnd out, active low v out = v cc (max6509) i out = 5ma i out = 5ma, outset = gnd or v cc ?.5 ?.7 t a = -40? to 0? 0.85 v cc 0.72 v cc 0.55 v cc v outset current i outset -5.5 ? max6510 outset voltage v outset 0.2 v cc max6510 hyst input threshold hyst input leakage 1 ? v ih v cc - 0.4 v output voltage high v oh v cc - 0.4 v open-drain output leakage current output voltage low v ol 0.3 v i out 10 ? out impedance to v cc v il 0.4 60 100 160 k outset = unconnected (max6510) temperature threshold hysteresis t hyst 2 ? 10 hyst = gnd hyst = v cc temperature threshold accuracy supply current i cc 32 50 ? t th ?.5 ?.7 ? max6509 t a = 0? to +125? parameter symbol min typ max units supply voltage range v cc 2.7 5.5 v conditions 47 80 outset = gnd or v cc (max6510) 97 165 outset = unconnected, out = low
90 100 120 110 140 150 130 160 -40 -30 -25 -35 -20 -15 -10 -5 0 r set vs. temperature (t a = -40 c to 0 c) max6509/10 toc02 temperature ( c) r set (k ) 0 30 20 10 50 40 90 80 70 60 100 0 20 40 60 80 100 120 140 r set vs. temperature (t a = 0 c to +125 c) max6509/10 toc03 temperature ( c) r set (k ) -0.20 -0.10 -0.15 0 -0.05 0.15 0.10 0.05 0.20 -50 0 -25 25 50 75 100 125 trip threshold offset vs. temperature max6509/10 toc04 temperature ( c) set point offset ( c) v cc = +2.7v v cc = +3.3v v cc = +3.3v v cc = +2.7v v cc = +5v 0 0.3 0.2 0.1 0.5 0.4 0.9 0.8 0.7 0.6 1.0 -40 -25 0 25 50 75 100 125 trip point error vs. set temperature max6509/10 toc05 temperature ( c) ? error ? ( c) 200ppm 100ppm 50ppm r set 1% r set set resistor tempco v cc = +5v 0 4 2 8 6 10 12 -40 25 50 -25 0 75 100 125 hysteresis vs. temperature max6509/10 toc06 temperature ( c) hysteresis ( c) hyst = gnd hyst = v cc __________________________________________typical operating characteristics (v cc = +5v, r pull-up = 10k (max6509 only), t a = +25?, unless otherwise noted.) max6509/max6510 resistor-programmable sot temperature switches 3 maxim integrated 10 20 15 30 25 45 40 35 50 -50 0 -25 25 50 75 100 125 supply current vs. temperature max6509/10 toc01 temperature ( c) supply current (a) v cc = +5v v cc = +3.3v v cc = +2.7v r set = 0 outset = gnd (max6510)
max6509/max6510 resistor-programmable sot temperature switches 4 maxim integrated pin description 2 2 ground gnd 3 open-drain output. reset to high impedance during power-on. out 3 open-drain with internal pull-up resistor, active-high, or active-low output. see table 1. reset to deassert during power-on. 4 4 hysteresis selection. hysteresis is 10? for hyst = v cc , 2? for hyst = gnd. hyst out, out 5 6 power-supply input 5 trilevel control input: outset = v cc sets out to active high. outset = gnd sets out to active low. outset = unconnected sets out to open drain with internal pull-up resistor. outset v cc 1 1 set temperature set point. connect an external 1% resistor from set to gnd to set trip point. detailed description the max6509/max6510 fully integrated temperature switches incorporate two temperature-dependent refer- ences and one comparator. one reference exhibits a positive temperature coefficient, and the other has a negative temperature coefficient. the temperature at which the two reference voltages are equal determines the temperature trip point. pin-selectable 2? or 10? hysteresis keeps the output from oscillating when the temperature is close to the threshold. the max6509 has an active-low, open-drain output structure that can only sink current. the max6510 has three different out- put options from which to choose (table 1). the max6509/max6510 are programmable for a wide range of temperature thresholds from -40? to +125?. the temperature threshold is set by an external resistor between set and gnd. the max6509 output easily interfaces with a microprocessor (?) reset input (figure 2). the max6510 output is intended for applica- tions such as driving a fan control switch (figure 3). hysteresis input the hyst pin is a cmos-compatible input that selects hysteresis at either a high level (10? for hyst = v cc ) or a low level (2? for hyst = gnd). hysteresis pre- vents the output from oscillating when the temperature is near the trip point. do not leave hyst unconnected. connect hyst to gnd or v cc . other input voltages cause increased supply current. choose the set-hot temperature (h) or set-cold temper- ature (c) option to ensure that the trip point is accurate and the hysteresis is in the right direction. a max6509 or max6510 with the h suffix will first trip at the correct point when temperature is increasing. for example, a max6509hauk+t or MAX6510HAUT+t with its trip point set to 100? will assert when its temperature rises above +100?, and will not deassert until its tempera- ture drops below +100? minus the selected hysteresis value (e.g., +98? if 2? hysteresis is chosen). con- versely, if the trip temperature of a max6509cauk+t or max6510caut+t is -40?, the output asserts at -40? as temperature falls, and deasserts when tem- perature rises above -40? plus the hysteresis value (e.g., -38? if 2? hysteresis is chosen) as shown in figure 4. output selection the max6509 provides an open-drain output. the max6510 features three output options selectable by outset (table 1). table 1. max6510 outset-selectable outputs pin function max6509 max6510 name outset out connected to v cc active high connected to gnd active low unconnected open drain with internal pull-up resistor
max6509/max6510 resistor-programmable sot temperature switches 5 maxim integrated figure 1. block and functional diagrams positive tempco reference negative tempco reference hyst network out hyst out temp t th hysteresis* v max6509hauk+t positive tempco reference negative tempco reference hyst network out hyst out temp t th t th v positive tempco reference negative tempco reference hyst network out hyst out temp v positive tempco reference negative tempco reference hyst network out outset = v cc outset = v cc hyst out temp t th MAX6510HAUT+t max6509cauk+t max6510caut+t max6509 with a pull-up resistor max6510 max6509 with a pull-up resistor max6510 hysteresis* hysteresis* *hysteresis is 10 c for hyst = v cc and 2 c for hyst = gnd. hysteresis*
max6509/max6510 resistor-programmable sot temperature switches 6 maxim integrated applications information thermal considerations the max6509/max6510 supply current is typically 32?. when used to drive high-impedance loads, the devices dissipate negligible power; therefore, the die temperature is essentially the same as the package temperature. the key to accurate temperature monitor- ing is good thermal contact between the max6509/ max6510 package and the device being monitored. in some applications, the sot23-5 and sot23-6 pack- ages may be small enough to fit underneath a socketed ?, allowing the device to monitor the ?? temperature directly. use the monitor? output to reset the ?, assert an interrupt, or trigger an external alarm. accurate tem- perature monitoring depends on the thermal resistance between the device being monitored and the max6509/max6510 die. the rise in die temperature due to self-heating is given by the following formula: t j = p diss ja where p diss is the power dissipated by the max6509/max6510, and ja is the package? thermal resistance. the typical thermal resistance is 115?/w for the sot23-6 package. to limit the effects of self- heating, minimize the output currents. for example, if the max6510 sinks 5ma, the output voltage is guaran- teed to be less than 0.3v; therefore, an additional 1.5mw of power is dissipated within the ic. this corre- sponds to a 0.173? shift in the die temperature in the sot23-6. temperature-window detector the max6509/max6510 temperature switch outputs assert when the die temperature is outside the pro- grammed range. combining the outputs of a set-cold and a set-hot device creates an over/undertemperature detector. the max6509/max6510 are designed to form two complementary pairs, each containing one cold trip point output and one hot trip point output. the assertion of either output alerts the system to an out-of-range tem- perature. the max6510 push-pull output stages can be ored to produce a thermal out-of-range alarm. more favorably, a max6509hauk+t and max6509cauk+t can be directly wire-ored with a single external resis- tor to accomplish the same task (figure 5). the temperature window (alarms or detectors as in figure 5) can be used to accurately determine when a device? temperature falls out of a programmed range, for example -3? to +75? as shown in figure 5. the thermal overrange signal can be used to assert a ther- mal shutdown, power-up, recalibration, or other tem- perature-dependent function. max6510 +5v out gnd v cc r set outset set hyst p fan heat v cc thyst = 2 c set hot out out temperature max6509h max6510c outset = gnd set cold 98 c 100 c t threshold = -10 c t threshold = 65 c 100 c 98 c -38 c -40 c -38 c -40 c figure 3. overtemperature fan control figure 4. temperature response max6509 +3.3v gnd set hyst v cc p heat v cc r pull-up 100k r set out int shutdown or reset figure 2. microprocessor alarm/reset
max6509/max6510 resistor-programmable sot temperature switches 7 maxim integrated low-cost, fail-safe temperature monitor in high-performance/high-reliability applications, multi- ple temperature monitoring is important. the high-level integration and low cost of the max6509/max6510 facilitate the use of multiple temperature monitors to increase system reliability. figure 6 shows two max6510s with different temperature thresholds. this ensures that fault conditions that can overheat the mon- itored device cause no permanent damage. the first temperature monitor activates the fan when the die temperature exceeds +45?. the second max6510 triggers a system shutdown if the die temperature reaches +75?. the second temperature monitor? out- put asserts when a wide variety of destructive fault con- ditions occur, including latchups, short circuits, and cooling-system failures. set-point resistor to set the trip-point temperature, connect a resistor between set and gnd. the resistor? value is deter- mined either from the r set vs. temperature graphs (see typical operating characteristics ) or from the equations below. to set the temperature trip point from -40? to 0?, use the following equation: r set(k ) = [(1.3258 10 5 ) / (t+1.3)] - 310.1693 - [(5.7797 10 6 ) / (t+1.3) 2 ] to set the temperature trip point from 0? to +125?, use the following equation: r set(k ) = [(8.3793 10 4 ) / t] - 211.3569 + [(1.2989 10 5 ) / t 2 ] where t is the trip temperature in kelvin. max6509cauk max6509hauk +5v hyst set hyst gnd v cc gnd v cc r pull-up 100k out out out of range MAX6510HAUT hyst v cc v cc 100k r set r set r set 100k 30k outset gnd +5v max6510caut gnd set outset hyst v cc v cc out 30k out out of range overtemp undertemp r set figure 5. temperature-window detector MAX6510HAUT gnd hyst +5v 30k r set MAX6510HAUT gnd hyst set v cc v cc out set out outset outset temperature fault fan control p heat heat 55k r set v cc v cc figure 6. low-power, high-reliability, fail-safe temperature monitor
max6509/max6510 resistor-programmable sot temperature switches 8 maxim integrated chip information transistor count: 234 package information for the latest package outline information and land patterns (foot- prints), 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. package type package code outline no. land pattern no. 5 sot23 u5+1 21-0057 90-0175 6 sot23 u6+1 21-0058 90-0174
maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integr ated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and specifications without notice 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 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 _________________________________ 9 2013 maxim integrated products, inc. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products , inc. max6509/max6510 resistor-programmable sot temperature switches revision history revision number revision date description pages changed 3 5/13 converted opns in ordering information to lead(pb)-free 1
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