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open - drain microprocessor supervisory circuit in 4 - lead sot - 143 data sheet adm6315 rev. g document feedback information furnished by analog devices is believe d to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no lice nse is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781. 329.4700 ? 1999 C 2013 analog devices, inc. all rights reserved. technical support www.analog.com features specified over temperature low power consumption (5 a typical) precision voltage monitor of voltages from 2.5 v to 5 v at 100 mv increments reset assertion down to v cc > 1 v reset timeout periods: 1 ms, 20 ms, 140 ms, or 1120 ms (min imum ) built - in manual reset pin compatible with the adm811 available in sot - 143 package qualified for automotive applications applications microprocessor systems controllers intelligent instruments automotive systems safety systems portable instruments functional bl ock diagram debounce adm6315 mr gnd reset v cc v ref reset circuitry 00081-001 figure 1. adm6315 gnd gnd 10k? system power v cc microprocessor system 00081-011 reset reset mr figure 2 . typical operating circuit general description the adm6315 is a reliable voltage - monitoring device that is suitable for use in most voltage - monitoring applications. the adm6315 is designed to monitor as little as a 1.8% degradation of a power supply voltage. the adm6315 can monitor all voltages (at 100 mv increments) from 2.5 v to 5 v. included in this circuit is a debounced manual reset input. reset ca n be activated using an ordinary switch (pulling mr low), a low input from another digital device, or a degradation of the supply voltage. the manual reset function is very useful, especially if the circuit in which the adm6315 is operati ng enters into a state that can be detected only by the user. allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out - of - control or locked - up system. the adm6315 is available in a cost - and spac e - efficient sot - 143 package.
adm6315 dat a sheet rev. g | page 2 of 12 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 functional block diagram .............................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 4 thermal resistance ...................................................................... 4 esd caution .................................................................................. 4 pin configuration and function descriptions ............................. 5 typical performance characteristics ..............................................6 theory of operation .........................................................................7 interfacing to output of other devices .....................................7 benefits of a ver y accurate reset threshold .............................7 detailed description .....................................................................7 manual reset input .......................................................................7 transient immunity ......................................................................7 outline dimensions ..........................................................................8 ordering guide .............................................................................8 automotive products ....................................................................9 revision history 9 /1 3 rev. f to rev. g changed date in revision f revision history ............................. 2 updated outline dimensions ......................................................... 8 1 2 /1 1 rev. e to rev. f added automotive part ..................................................... universal changes to ordering guide ............................................................ 8 9 /07 rev. d to rev. e changes to absolute maximum ratings ....................................... 4 updated outline dimensions ......................................................... 8 changes to ordering guide ............................................................ 8 4/06 rev. c to rev. d updated format .................................................................. universal updated outline dimensions ......................................................... 8 changes to ordering guide ............................................................ 8 12/03 rev. b to rev. c edit to absolute maximum ratings ............................................... 3 edits to ordering guide .................................................................. 4 deleted table i and table ii ............................................................ 6 deleted table iii and table iv ........................................................ 7 updated outline dimensions ......................................................... 8 2/03 rev. a to rev. b edits to features ................................................................................. 1 edits to specifications ....................................................................... 2 edits to absolute maximum ratings .............................................. 3 edits to ordering guide ................................................................... 3 edits to table i and table ii ............................................................. 6 edits to table iii and table iv ......................................................... 7 updated outline dimensions .......................................................... 8 10/01 rev. 0 to rev. a edits to table iii ................................................................................ 7 edits to table iv ................................................................................ 7 1999 revision 0: initial version
data sheet adm6315 rev. g | page 3 of 12 specifications v cc = full operating range, t a = t min to t max , v cc typical = 5 v, unless otherwise noted. table 1 . parameter min typ max unit test conditions/comments supply operating voltage 1 5.5 v t a = ?40c to +85c v cc supply curre nt 5 12 a v cc = 5.5 v, no load, t a = ?40c to +85c 15 a v cc = 5.5 v, no load, t a = ?40c to +125c 4 10 a v cc = 3.6 v, no load, t a = ?40c to +85c 12 a v cc = 3.6 v, no load, t a = ?40c to +125c reset vol tage threshold (v th ) v th ? 1.8% v th v th + 1.8% v t a = 25c v th ? 2.5% v th + 2.5% v t a = ?40c to +85c v th ? 3.5% v th + 3.5% v t a = ?40c to +125c reset threshold temperature coefficient 60 ppm/c v cc to reset delay 35 s v cc = falling at 1 mv/ s reset active timeout period adm6315 xxd1 1 1.4 2 ms t a = ?40c to +85c 0.8 2.4 ms t a = ?40c to +125c adm6315 xxd2 20 28 40 ms t a = ?40c to +85c 16 48 ms t a = ?40c to +125c adm6315 xxd3 140 200 280 ms t a = ?40c to +85c 112 336 ms t a = ?40c to +125c adm6315 xxd4 1120 1570 2240 ms t a = ?40c to +85c 896 2688 ms t a = ?40c to +125c manual reset input threshold 0.8 v v th > 4 v (v il ) 2.4 v v th > 4 v (v ih ) 0.3 v cc v v th < 4 v (v il ) 0.7 v cc v v th < 4 v (v ih ) minimum input pulse 1 s glitch rejection 100 ns to reset delay 500 ns pull - up resistance 32 63 100 k? reset output output voltage 0.4 v v cc > 4.25 v, i sink = 3.2 ma 0.3 v v cc > 2.5 v, i sink = 1.2 ma 0.3 v v cc > 1 v, i sink = 80 a output leakage current 1 a v cc > v th , reset deasserted
adm6315 dat a sheet rev. g | page 4 of 12 absolute maximum rat ings t a = 2 5c, unless otherwise noted. table 2 . parameter rating terminal voltage (w ith respect to ground) v cc ?0.3 v to +6 v all other inputs ?0.3 v to +6 v input current v cc 20 ma output current reset 20 ma ope rating temperature range ?40 c to + 125c storage temperature range ?65 c to +160c lead temperature (soldering, 10 sec) 300c vapor phase (60 sec) 215c infrared (15 sec) 220c esd rating 2.5 kv stresses above those listed under absolute maximum rati ngs may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maxi mum rating conditions for extended periods may affect device reliability. thermal resistance ja is specified for the worst - case conditions, that is, a device soldered in a circuit board for surface - mount packages. table 3 . thermal resistance package type ja unit 4 - lead sot - 143 330 c/w esd caution
data sheet adm6315 rev. g | page 5 of 12 pin confi guration and functio n descriptions gnd reset 1 4 mr v cc 2 3 adm6315 top view (not to scale) 00081-002 figure 3. pin c onfiguration table 4 . pin function descriptions pin no. mnemonic description 1 gnd ground reference for all signals , 0 v. 2 reset active low logic output . reset remains low while v cc is below the reset threshold or when mr is low. reset then remains low for a minimum of 1 ms, 20 ms, 140 ms, or 1120 ms after v cc rises above the reset threshold and mr is high. 3 mr manual reset. this active low debounced input ignores input pulses of 100 ns (typical) and is guaranteed to accept input pulses of greater than 1 s. leave floating when not used. 4 v cc monitored supply v oltage.
adm6315 dat a sheet rev. g | page 6 of 12 typical performance characteristics temperature (c) 10 4 0 ?40 6 2 8 i dd (a) ?20 0 20 40 60 80 100 125 v cc = 5.5v v cc = 3v v cc = 1v 00081-003 figure 4 . supply current vs. temperature 0 power-down reset delay (s) 50 100 150 200 250 300 350 400 450 v od = 20mv v od = 125mv v od = 200mv temperature (c) ?40 ?20 0 20 40 60 80 100 125 00081-004 figure 5 . power- down reset delay vs. temperature 0.94 normalized reset timeout period (ms) 0.96 0.98 1.00 1.02 1.04 1.06 temperature (c) ?40 ?20 0 20 40 60 80 100 125 00081-005 figure 6 . normalized reset timeo ut period vs. temperature (v cc rising) 50 45 40 35 30 25 20 15 10 5 0 0 100 200 300 400 500 600 700 800 900 1000 maximum transient duration (s) 00081-012 reset comparator overdrive, (v t h ? v cc ) (mv) figure 7. maximum transient duration vs. reset comparator overdrive normalized reset threshold (v) 0.995 1.000 1.005 0.990 temperature (c) ?40 ?20 0 20 40 60 80 100 125 00081-007 figure 8 . normalized reset threshold vs. temperature (v cc falling) supply voltage (v) 0 supply current (a) 2 12 4 6 8 10 +85c +25c ?40c 0 1 2 3 4 5 00081-008 fi gure 9 . supply current vs. supply voltage
data sheet adm6315 rev. g | page 7 of 12 theory of operation interfacing to output of other devices the adm6315 series is designed to integrate with as many devices as possible. one feature of the adm6315 is the reset open-drain output, which can sink current from sources with a voltage greater than the v cc of the adm6315 input, making it suitable for use in more diverse applications. benefits of a very accurate reset threshold because the adm6315 series can operate effectively even when there are large degradations of the supply voltages (due to an accurate internal voltage reference circuit), the possibility of a malfunction during a power failure is greatly reduced. reset vol v cc trip point (max) v cc trip point v cc to reset delay v cc v cc trip point (min) 00081-009 figure 10. v cc power-down/brownout timing diagram detailed description the adm6315 is designed to protect the integrity of a systems operation by ensuring the proper operation of the system during power-up, power-down, and brownout conditions. when the adm6315 is powered up, the reset output of the adm6315 remains low for a period typically equal to the reset active timeout period. this feature allows adequate time for the system to power up correctly and for the power supply to stabilize before any devices are brought out of reset and allowed to begin executing instructions. initializing a system in this way provides a more reliable startup for microprocessor systems. when a brownout condition occurs (assuming v cc is falling at 1 mv/s), the adm6315 produces a reset in 35 s typical. producing a reset this fast means that the entire system can be reset together before any part of the systems voltage falls below its recommended operating voltage. this system reset can avoid dangerous and/or erroneous operation of a microprocessor- based system. manual reset input the adm6315 also provides an additional input, mr . this input can be used either as a means for the system operator to reset the system manually via a switch or for a digital circuit to reset the system. the mr input (typically) ignores negative-going pulses that are faster than 100 ns, and it is guaranteed to accept any negative- going input pulse of a duration greater than or equal to 1 s. if mr is connected to long cables or is used in a noisy environment, placing a 1 f decoupling capacitor between the mr input and ground further improves the glitch immunity of the adm6315 . v cc trip point (max) v cc trip point v cc v cc trip point (min) reset reset active timeout 00081-010 figure 11. v cc power-up timing diagram transient immunity as well as being an accurate reset circuit, the adm6315 has good immunity from negative-going transients (see figure 7). because of this characteristic, the adm6315 is suitable for use in noisy environments. figure 7 shows the reset comparator overdrive (the maximum magnitude of negative-going pulses with respect to the typical reset threshold) vs. the pulse duration without a reset.
adm6315 data sheet rev. g | page 8 of 12 outline dimensions compliant to jedec standards to-253-aa 0.89 0.76 0.50 0.30 0.100 0.013 3.04 2.90 2.80 1.07 0.90 0.75 1.92 bsc 1.72 ref 0.20 bsc 0.54 ref 12 3 4 1.40 1.30 1.20 2.64 2.10 8 0 0.60 0.50 0.40 0.20 0.08 1.22 0.80 03-13-2012-b seating plane figure 12. 4-lead small outline transistor package [sot-143] (ra-4) dimensions shown in millimeters ordering guide model 1, 2 temperature range package description package option trip point minimum timeout (ms) branding adm6315 -46d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.63 1 mdv adm6315 -46d1art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.63 1 mdv adm6315 -46d1artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.63 1 m9q adm6315 -45d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.50 1 mdu adm6315 -45d1art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.50 1 mdu adm6315 -45d1artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.50 1 m81 adm6315 -44d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 1 mdt adm6315 -44d1art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 1 mdt adm6315 -31d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1 mdg adm6315 -31d1artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1 m7x adm6315 -31d1artzrl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1 m7x adm6315 -29d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.93 1 mdc adm6315 -29d1art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.93 1 mdc adm6315 -29d1artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.93 1 m7t adm6315 -26d1artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.63 1 mdb adm6315 -26d1art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.63 1 mdb adm6315 -26d1artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1 mdb# adm6315 -26d1artzrl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1 mdb# adm6315 -46d2artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 20 mev adm6315 -46d2art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 20 mev adm6315 -45d2artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 20 meu adm6315 -45d2art-rl C40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 20 meu adm6315 -45d2artzr7 C40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 20 ma8 adm6315 -44d2artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 20 met adm6315 -44d2art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 20 met adm6315 -44d2artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.39 20 m80 adm6315 -31d2artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 20 meg adm6315 -31d2artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 3.08 20 m7y adm6315 -31d2artzrl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 3.08 20 m7y adm6315 w31d2artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 3.08 20 llv
data sheet adm6315 rev. g | page 9 of 12 model 1, 2 temperature range package description package option trip point minimum timeout (ms) branding adm6315 -29d2artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.93 20 mec adm6315 -29d2art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 2.93 20 mec adm6315 -29d2artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 20 m7u adm6315 -26d2artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 20 meb adm6315 -26d2artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 20 meb# adm6315 -26d2artzrl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 20 meb# adm6315 -46d3artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 140 mfv adm6315 -46d3art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 140 mfv adm6315 -46d3artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 140 m84 adm6315 -45d3artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 140 mfu adm6315 -45d3art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 140 mfu adm6315 -45d3artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 140 m82 adm6315 -44d3artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.39 140 mft adm6315 -44d3artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.39 140 mft# adm6315 -44d3artzrl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.39 140 mft# adm6315 -31d3artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 140 mfg adm6315 -31d3art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 140 mfg adm6315 -31d3artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 140 m4g adm6315 -31d3artzrl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 140 m4g adm6315 -29d3artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 140 mfc adm6315 -29d3art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 140 mfc adm6315 -29d3artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 140 m7v adm6315 -26d3artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 140 mfb# adm6315 -26d3artzrl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 140 mfb# adm6315 -46d4artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 1120 mgv adm6315 -46d4art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 1120 mgv adm6315 -46d4artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.63 1120 m85 adm6315 -45d4artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 1120 mgu adm6315 -45d4art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 4.50 1120 mgu adm6315 -44d4artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 1120 mgt adm6315 -44d4artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 1120 m9h adm6315 -44d4artzrl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 4.39 1120 m9h adm6315 -31d4artrl7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1120 mgg adm6315 -31d4art-rl ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1120 mgg adm6315 -31d4artzr7 ?40c to +125c 4-lead small outline transistor [sot-143] ra-4 3.08 1120 m7z adm6315 -29d4artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 1120 mgc adm6315 -29d4art-rl ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 1120 mgc adm6315 -29d4artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.93 1120 m7w adm6315 -26d4artrl7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1120 mgb adm6315 -26d4art-rl C40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1120 mgb adm6315 -26d4artzr7 ?40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1120 mgb# adm6315 -26d4artzrl C40c to +125c 4-lead small outline t ransistor [sot-143] ra-4 2.63 1120 mgb# 1 z = rohs-compliant part, # denotes lead-free product may be top or bottom marked. 2 w = qualified for auto motive applications. automotive products the adm6315w model is available with controlled manufacturing to support the quality and reliability requirements of automotive applications. note that these automotive models may have specifications that differ from the commercial models; therefore, desi gners should review the specifications section of this data sheet carefully. only the automotive grade products shown are available f or use in automotive applications. contact your local analog devices account representative for specific product ordering information an d to obtain the specific automotive reliability reports for these models.
adm6315 data sheet rev. g | page 10 of 12 notes
data sheet adm6315 rev. g | page 11 of 12 notes
adm6315 data sheet rev. g | page 12 of 12 notes ? 1999 C 2013 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d00081 - 0 - 9/13(g)

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