TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 1 post office box 655303 ? dallas, texas 75265 dual voltage detector with adjustable hysteresis 3.3-v/adjustable and 2-v/adjustable assured reset at v dd = 0.8 v supply current: 3 a typical at v dd = 3.3 v independent open-drain reset outputs temperature range ...?40 c to 85 c six-pin sot-23 package description the tps3806 integrates two independent voltage detectors for battery voltage monitoring. during power-on, reset and rstsense are asserted when supply voltage v dd or the voltage at lsense input become higher than 0.8 v. thereafter, the supervisory circuit monitors v dd and lsense, keeping reset and rstsense active as long as v dd and lsense remain below the threshold voltage v it . as soon as v dd or lsense rise above the threshold voltage v it , reset or rstsense is deasserted, respectively. the tps3806 device has a fixed-sense threshold voltage v it set by an internal voltage divider at v dd and an adjustable second-lsense input. in addition, an upper voltage threshold can be set at hsense to allow a wide adjustable hysteresis window. the devices are available in a 6-pin sot-23 package. the tps3806 device is characterized for operation over a temperature range of ?40 c to 85 c. package information t device name threshold voltage marking t a device name v dd sense marking 40 cto85 c TPS3806J20dbvr ? TPS3806J20dbvt ? 1.8 v 1.207 v pgqi ?40 c to 85 c tps3806i33dbvr ? tps3806i33dbvt ? 3 v 1.207 v pgpi ? the dbvr passive indicates tape and reel containing 3000 parts. ? the dbvt passive indicates tape and reel containing 250 parts. ordering information tps380 6 i 33 dbv r reel package nominal supply voltage nominal threshold voltage functionality family copyright ? 2001, texas instruments incorporated please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 3 2 4 6 (top view) 1 rstsense gnd reset hsense v dd tps3806 dbv package lsense 5 v dd lsense hsense reset rstsense gnd r4 r5 r1 r2 r3 3.6 v li-lon cell tps3806i33 typical operating circuit production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters.
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 2 post office box 655303 ? dallas, texas 75265 function/truth tables tps3806 v dd > v it reset lsense > v it rstsense 0 l 0 l 1 h 1 h functional block diagram _ + _ + r1 r2 reference voltage of 1.207 v rstsense reset lsense hsense v dd gnd tps3806 detailed description operation the tps3806 is used for monitoring battery voltage and asserting reset when battery gets discharged below a certain threshold voltage. the battery voltage is monitored by a comparator via an external resistor divider. when the voltage at the lsense input drops below the internal reference voltage the rstsense output pulls low. the output remains low until the battery is replaced, or recharged above a second higher trip-point,set at hsense. a second voltage can be monitored at v dd . the independent reset output pulls low when the voltage at v dd drops below the fixed threshold voltage. because the tps3806 outputs are open-drain mosfets, most applications may require a pullup resistor. programming the threshold voltage levels the low-voltage threshold at lsense is calculated as follows: v (lsense) v ref r1 r2 r3 r2 r3 where v ref = 1.207 v the high-voltage threshold at hsense is calculated as follows: v (hsense) v ref r1 r2 r3 r3 where v ref = 1.207 v to minimize battery current draw it is recommended to use 1-m ? as the total resistor value r (tot) = r1 + r2 + r3.
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 3 post office box 655303 ? dallas, texas 75265 timing requirements v dd v it(hsense) v it(lsense) v it ,v dd +v hys v it (v dd ) 0.8 v rstsense reset = undefined terminal functions terminal i/o description name no. i/o description gnd 2 i ground hsense 6 i adjustable hysteresis input lsense 5 i adjustable sense input reset 3 o active-low open drain reset output (from v dd ) rstsense 1 o active-low open-drain reset output (from lsense) v dd 4 i input supply voltage and fixed sense input
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 4 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature (unless otherwise noted) ? supply voltage, v dd (see note1) 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . all other pins (see note 1) ? 0.3 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum low-output current, i ol 5 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum high-output current, i oh ? 5 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input clamp current, i ik (v i <0 or v i >v dd ) 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output clamp current, i ok (v o <0 or v o >v dd ) 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating free-air temperature range, t a ? 40 c to 85 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . soldering temperature 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? 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 under ? recommended operating conditions ? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. note 1: all voltage values are with respect to gnd. for reliable operation the device must not be continuously operated at 7 v f or more than t=1000 h. dissipation rating table package t a <25 c power rating derating factor above t a = 25 c t a = 70 c power rating t a = 85 c power rating dbv 437 mw 3.5 mw/ c 280 mw 227 mw recommended operating conditions min max unit supply voltage, v dd 1.3 6 v input voltage, v i 0 v dd +0.3 v operating free-air temperature range, t a ? 40 85 c
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 5 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions min typ max unit v dd = 1.5 v, i ol = 1 ma v ol low-level output voltage v dd = 3.3 v, i ol = 2 ma 0.3 v v ol low level out ut voltage v dd = 6 v, i ol = 3 ma 0.3 v power-up reset voltage (see note 2) v dd 0.8 v, i ol = 50 a 0.2 v lsense 1.198 1.207 1.216 TPS3806J20 t a =25 c 1.787 1.8 1.813 v v ne g ative- g oin g input threshold tps3806i33 t a 25 c 2.978 3 3.022 v v it negative going in ut threshold voltage (see note 3) lsense 1.183 1.207 1.231 TPS3806J20 t a = ? 40 c to 85 c 1.764 1.8 1.836 v tps3806i33 t a 40 c to 85 c 2.94 3 3.06 v v hysteresis 1.2 v < v it < 2.5 v 60 mv v hys hysteresis 2.5 v < v it < 3.5 v 90 mv i i input current lsense, hsense ? 25 25 na i oh high-level output current v dd = v it + 0.2 v, v oh = v dd 300 na i supply current v dd = 3.3 v, output unconnected 3 5 a i dd supply current v dd = 6 v, output unconnected 4 6 a c i input capacitance v i = 0 v to v dd 1 pf notes: 2. the lowest supply voltage at which reset becomes active. t r,vdd 15 s/v 3. to ensure best stability of the threshold voltage, place a bypass capacitor (ceramic, 0.1 f) near the supply terminals. timing requirements at r l = 1 m ? , c l = 50 pf, t a = ? 40 c to 85 c parameter test conditions min typ max unit t pulse width at v dd v 105xv v 095xv 55 s t w pulse width at sense v ih = 1.05 x v it , v il = 0.95 x v it 5.5 s switching characteristics at r l = 1 m ? , c l = 50 pf, t a = ? 40 c to 85 c parameter test conditions min typ max unit t propa g ation (dela y ) time, v dd to reset delay 5 100 s t phl pro agation (delay) time , high-to-low-level output lsense to rstsense delay v ih = 1.05 x v it , 5 100 s t propa g ation (dela y ) time, v dd to reset delay v ih = 1 . 05 x v it , v il = 0.95 x v it 5 100 s t plh pro agation (delay) time , low-to-high-level output hsense to rstsense delay il it 5 100 s
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 6 post office box 655303 ? dallas, texas 75265 typical characteristics figure 1 3 2 1 0 0 0.5 1 1.5 2 2.5 3 4 5 supply current vs supply voltage 6 3.5 4 4.5 5 5.5 6 dd i supply current ? ? a v dd ? supply voltage ? v v (hsense) < v (lsense) reset = open rstsense = open 85 c 0 c 25 c ? 40 c figure 2 1.00 0.80 0.60 0.40 012345 1.20 1.40 low-level output voltage vs low-level output current 1.60 i ol ? low-level output current ? ma ol v ? low-level output voltage ? v 0.20 0 v dd = 1.5 v v (sense) = low 85 c 0 c 25 c ? 40 c figure 3 0.35 0.30 0.25 0.20 01 2 3 0.40 0.45 low-level output voltage vs low-level output current 0.50 0.15 0.10 0.05 0 ol v ? low-level output voltage ? v i ol ? low-level output current ? ma 85 c 0 c 25 c ? 40 c v dd = 1.5 v v (sense) = low 0.5 1.5 2.5 expanded view figure 4 2 1.5 1 0.5 0 5 10 15 20 25 30 2.5 3 low-level output voltage vs low-level output current 3.5 35 40 45 50 ol v ? low-level output voltage ? v i ol ? low-level output current ? ma 85 c 0 c 25 c ? 40 c v dd = 6 v v (sense) = low 0
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 7 post office box 655303 ? dallas, texas 75265 typical characteristics figure 5 0.7 0.6 0.5 0.4 0 2 4 6 8 10 12 0.8 0.9 1 14 16 18 20 low-level output voltage vs low-level output current ol v ? l ow- l eve l o u t pu t v o lt age ? v i ol ? low-level output current ? ma 85 c 0 c 25 c ? 40 c v dd = 6 v v (sense) = low 0.3 0.2 0.1 0 expanded view figure 6 1 0.999 0.998 0.997 ? 40 ? 20 0 20 1.001 1.002 normalized input threshold voltage vs free-air temperature at v dd 1.003 t a ? free-air temperature at v dd ? c 0.996 0.995 reset = 100 k ? to v dd 1.004 1.005 40 60 80 v it ? normalized input threshold voltage v it (t a ) / v it (25 c) figure 7 7 6 5 4 0 0.1 0.2 0.3 0.4 0.5 0.6 8 9 minimum pulse duration at v dd vs v dd threshold overdrive voltage 10 0.7 0.8 0.9 1 3 2 1 0 v dd ? threshold overdrive voltage ? v t w ? minimum pulse duration at v dd ? s figure 8 7 6 5 4 0 0.1 0.2 0.3 0.4 0.5 0.6 8 9 minimum pulse duration at lsense vs lsense threshold overdrive voltage 10 0.7 0.8 0.9 1 3 2 1 0 lsense ? threshold overdrive voltage ? v t w ? minimum pulse duration at lsense ? s
TPS3806J20, tps3806i33 dual voltage detector with adjustable hysteresis slvs393 ? july 2001 8 post office box 655303 ? dallas, texas 75265 mechanical data dbv (r-pdso-g6) plastic small-outline 0,10 m 0,20 0,95 0 ? 8 0,25 0,55 0,35 gage plane 0,15 nom 4073253-5/f 10/00 2,60 3,00 0,50 0,25 1,50 1,70 4 6 3 1 2,80 3,00 1,45 0,95 0,05 min seating plane 6x notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion. d. leads 1, 2, 3 are wider than leads 4, 5, 6 for package orientation.
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