View ADM6384YKS26D3Z-R7_3760071.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

microprocessor supervisory circuit in 4 - lead sc70 adm6384 rev. c information furnished by analog devices is believed 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 us e. specifications subject to change without notice. no license 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 w ay, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ? 2005C 2011 analog devices, inc. all rights reserved. f eatures precision power supply monitoring 31 reset threshold options : 1.58 v to 5.0 v four reset timeouts : 1 ms, 20 ms, 140 ms, and 1120 ms manual reset input reset output stage push - pull active - low guaranteed reset output valid to v cc = 1 v power supply glitch immunity specified over the ? 40c to +125c temperature range 4 - lead sc70 package a pplications microprocessor systems computers controllers intelligent instruments portable equipment g eneral d escription the adm6384 is a supervisory circuit that monitors power supply voltage levels in microprocessor - based systems. a power - on reset signal is generated when the supply voltage rises to a preset threshold level. the debounced manual reset input of the adm6384 can be use d to initiate a reset by means of an externa l push button or logic sign al. the part is available in a choice of 31 reset threshold options, from 1.58 v to 5.0 v. the minimum reset timeout periods are 1 ms, 20 ms, 140 ms, and 1120 ms. the adm6384 is available in a 4 - lead sc70 package and typi - cally consumes only 7 a, making i t suitable for use in low power, portable applications. functional b lock d iagrams adm6384 v cc gnd reset reset generator debounce mr v ref 05305-001 figure 1 . reset reset mr gnd gnd adm6384 v cc v cc microprocessor 100k? 05305-002 figure 2 .
adm6384 rev. c | page 2 of 12 table of contents features .............................................................................................. 1 ? applications ....................................................................................... 1 ? general description ......................................................................... 1 ? functional block diagrams ............................................................. 1 ? revision history ............................................................................... 2 ? specifications ..................................................................................... 3 ? absolute maximum ratings ............................................................ 5 ? esd caution .................................................................................. 5 ? pin configuration and function descriptions ............................. 6 ? typical performance characteristics ..............................................7 ? circuit description............................................................................9 ? reset output ..................................................................................9 ? manual reset input .......................................................................9 ? applications information .............................................................. 10 ? negative-going v cc transients ................................................ 10 ? ensuring reset valid to v cc = 0 v ........................................... 10 ? outline dimensions ....................................................................... 11 ? ordering guide .......................................................................... 11 ? revision history 4/11rev. b to rev. c updated outline dimensions ....................................................... 11 changes to ordering guide .......................................................... 11 7/08rev. a to rev. b changes to figure 5, figure 8, and figure 9.................................. 7 changes to figure 10 ........................................................................ 8 changes to figure 15 ...................................................................... 11 changes to ordering guide .......................................................... 11 1/07rev. 0 to rev. a updated format .................................................................. universal changes to specifications table ...................................................... 3 updated outline dimensions ....................................................... 11 changes to ordering guide .......................................................... 11 7/05revision 0: initial version
adm6384 rev. c | page 3 of 12 specifications v cc = full operating range, t a = ?40c to +125c , unless otherwise no ted. t able 1. parameter min typ max unit test conditions/comments supply v cc operating voltage range 1 5.5 v supply current 7 13 a v cc = 5.5 v, no load 6 11 a v cc = 3.6 v, no load 4 7 a v cc = 2.5 v, no load 1 3 6 a v cc = 1.8 v, no load 1 reset threshold voltage adm6384x50x 4.88 5.00 5.12 v adm6384x49x 4.78 4.90 5.02 v adm6384x48x 4.68 4.80 4.92 v adm6384x47x 4.58 4.70 4.82 v adm6384x46x 4.51 4.63 4.74 v adm6384x45x 4.39 4.5 4.61 v adm6384x44x 4.27 4.38 4.48 v adm6384x43x 4.19 4.30 4.41 v adm6384x42x 4.1 4.2 4.31 v adm6384x41x 4.0 4.1 4.2 v adm6384x40x 3.9 4.0 4.1 v adm6384x39x 3.8 3.9 4.0 v adm6384x38x 3.71 3.8 3.9 v adm6384x37x 3.61 3.7 3.79 v adm638 4x36x 3.51 3.6 3.69 v adm6384x35x 3.41 3.5 3.59 v adm6384x34x 3.32 3.4 3.49 v adm6384x33x 3.22 3.3 3.38 v adm6384x32x 3.12 3.2 3.28 v adm6384x31x 3.00 3.08 3.15 v adm6384x30x 2.93 3.0 3.08 v adm6384x29x 2.85 2.93 3.00 v adm6384x28x 2.73 2.8 2.87 v adm6384x27x 2.63 2.70 2.77 v adm6384x26x 2.56 2.63 2.69 v adm6384x25x 2.44 2.5 2.56 v adm6384x24x 2.34 2.4 2.46 v adm6384x23x 2.26 2.31 2.37 v adm6384x22x 2.13 2.19 2.24 v adm6384x17x 1.62 1.67 1.71 v adm6384x16x 1.54 1.58 1.61 v reset threshold temperature coefficient 60 ppm/c v cc to reset delay 35 s v cc falling at 10 mv/s from v th + 100 mv to v th ? 100 mv reset threshold hysteresis 2 v th mv reset timeout period adm6384xxd1 1 2 ms adm6384xxd2 20 40 ms adm6384xxd3 140 280 ms adm6384xxd4 1120 2240 ms
adm6384 rev. c | page 4 of 12 parameter min typ max unit test conditions/comments manual reset input mr input threshold v il 0.3 v cc v v cc < 4 v 0.8 v v cc > 4 v v ih 0.7 v cc v v cc < 4 v 2.4 v v cc > 4 v mr input pulse width 1 s mr glitch rejection 100 ns mr pull - up resistance 32 63 100 kv mr to reset delay 200 ns reset output voltage v ol 0.3 v v cc 1.0 v, i sink = 80 a 0.3 v v cc 2.5 v, i sink = 1.2 ma 0.4 v v cc 4.5 v, i sink = 3.2 ma v oh 0.8 v cc v v cc 2.5 v, i source = 500 a 0.8 v cc v v cc 4.5 v, i source = 800 a 1 t a = 25 c o nly .
adm6384 rev. c | page 5 of 12 absolute maximum rat ings t a = 25c, unless otherwise note d. table 2. parameter rating v cc ? 0.3 v to +6 v reset ? 0.3 v to +6 v output current ( reset ) 20 ma operating temperature range ? 40c to +125c storage temperature range ? 65c to +150c ja thermal impedance, sc70 331c/w soldering temperature sn/pb 240c, 30 sec pb - free 260c, 40 sec stresses above those listed under absolute maximum ratings 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 maximum rating conditions for extended periods may affect device reliability. esd caution
adm6384 rev. c | page 6 of 12 pin configuration an d function descripti ons gnd 1 reset 2 v cc 4 mr 3 adm6384 top view (not to scale) 05305-003 figure 3 . pin configuration table 3 . pin function descriptions pin o. neonic description 1 gnd ground. 2 reset active - low reset output . this is an active - low output that is a sserted whenever v cc is below the reset threshold ( v th ) . it features a p ush - pull output stage. 3 mr manual reset input. this is an active - low input that , when forced low for at least 1 s, generat es a reset. it features a 52 kv internal pull - up. 4 v cc power supply voltage being monitored.
adm6384 rev. c | page 7 of 12 typical performance characteristics 05305-004 temper a ture ( c ) 120 ?40 ?20 0 20 40 60 80 100 i cc (a) 10.0 9.5 7.5 7.0 6.5 9.0 8.5 8.0 6.0 5.5 5.0 4.5 4.0 3.5 v cc = 5v v cc = 3.3v v cc = 1.5v figure 4 . supply current vs. temperature 05305-005 temperature (c) 120 ?40 0 ?20 40 20 100 80 60 normalized reset timeout (ms) 1.20 1.15 1.10 1.05 0.95 1.00 0.90 0.85 0.80 figure 5 . normalized re set timeout perio d vs. temperature 05305-006 temperature (c) 120 ?40 0 ?20 40 20 100 80 60 v cc t o reset output del a y (s) 100 90 80 60 70 40 50 20 10 30 0 figure 6 . v cc to reset output delay vs. temperature 05305-007 temperature (c) 120 ?40 0 ?20 40 20 100 80 60 normalized reset threshold (v) 1.05 1.03 1.04 1.01 1.02 0.99 1.00 0.97 0.98 0.95 0.96 figure 7 . normalized reset threshold vs. temperature 05305-008 i sink (ma) 7 0 1 2 3 4 5 6 v ol (v) 0.20 0.15 0.10 0.05 0 v cc = 2.9v figure 8 . output voltage l ow vs. i sink 05305-009 i source (ma) 1.0 0 0.2 0.4 0.6 0.8 v oh (v) 2.92 2.90 2.88 2.86 2.84 2.82 v cc = 2.9v figure 9 . output voltage high vs. i source
adm6384 rev. c | page 8 of 12 05305-010 overdrive v od (mv) 1000 10 100 maximum v cc transient dur a tion (s) 160 120 140 100 60 80 40 20 0 v th = 4.63v v th = 2.93v reset occurs above cu r ve figure 10 . maximum v cc transient duration vs. reset threshold overdrive 05305-0 1 1 temperature (c) ?40 ?20 0 20 40 60 80 100 120 manua l reset t o reset del a y (ns) 340 280 320 300 260 220 240 200 180 160 140 120 100 v cc = 3.3v v cc = 5v figure 11 . manual reset minimum pulse width vs. temperature
adm6384 rev. c | page 9 of 12 circuit description the adm6384 provides microprocessor supply voltage supervi - sion by controlling the microprocessor reset input. code execution errors are avoided during power - up, power - down, and brownout conditio ns by asserti ng a reset signal when the supply voltage is below a preset threshold. in addition, the adm6384 allows supply voltage stabilization with a fixed timeout before the reset deas serts after the supply voltage rises above the threshold. if t he user detects a pr oblem with the system operation, a manual reset inpu t is available to reset the microprocessor by means of an external push - button , for example . reset output the adm6384 features an active - low , push - pull reset output. the reset signal is guaranteed to be l ogic low for v cc down to 1 v. the reset output is asserted when v cc is below the reset threshold (v th ) or when mr is driven low. reset remains asserted for the duration of the reset active timeout period (t rp ) after v cc rises above the re set threshold or after mr transitions from low to high. figure 12 illustrates the behavior of the reset outputs. v cc 1v v cc 0v v th v th 0v v cc reset t rd t rp 05305-012 figure 12 . reset timing diagram manual reset input the adm6384 features a manual reset input ( mr ) that , when driven low, asserts the reset output. when mr transitions from low to high, reset remains asserted for the duration of the reset active timeout period before deasserting. the mr input has a 52 k ? internal pull - up so that the input is always high when unconnected. an external push - button switch can be connected between mr and ground so that the user can generate a reset. debounce circuitry for this purpose is int egrated on - chip. noise immunity is provided on the mr input, and fast, negative - going transients of up to 100 ns (typ ical ) are ignored. a 0.1 f capacitor between mr and ground provides additional noise immunity.
adm6384 rev. c | page 10 of 12 appli cation s information negative - going v cc transients to avoid unnecessary resets caused by fast power supply tran - sients, the adm6384 is equipped with glitch rejection circuitry. the typical performance characteristic shown in figure 10 plots v cc transient duration v s. the transient magnitude. the curves show combinations of transient magnitude and duration for which a reset is not generated for 4.63 v and 2.93 v reset threshold parts. for example, with the 2.93 v threshold, a transie nt that g oes 100 mv below the threshold and lasts 8 s typically does not cause a reset, but if the transient is any greater in magnitude or duration, a reset is generated. an optional 0.1 f bypass capacitor mounted close to v cc provides additional glitch rejection. ensuring reset valid to v cc = 0 v both active - low and active - high reset outputs are guaranteed to be valid for v cc as low as 1 v. however, by using an external resistor with push - pull configured reset outputs, valid outputs for v cc as low as 0 v are possible. for an active - low reset out - put, a resistor connected between reset and ground pulls the output low when it is unable to sink current. a large resistance such as 100 k ? should be used to avoid overload ing the reset output when v cc is above 1 v. reset gnd adm6384 100k? 05305-013 v cc figure 13 . ensuring reset valid to v cc = 0 v
adm6384 rev. c | page 11 of 12 outline dimensions * package outline corresponds in full to eiaj sc82 except for width of pin 2 as shown. 072809-a * 0.70 0.50 0.10 max 1.00 0.80 1.10 0.80 0.40 0.10 0.18 0.10 0.30 0.10 2 1 3 4 0.50 bsc 0.65 bsc 2.20 1.80 2.40 1.80 1.35 1.15 c oplanarity 0.10 seating plane 0.30 0.15 figure 14. 4-lead thin shrink small outline transistor package [sc70] (ks-4) dimensions shown in millimeters ordering quantity rl7: 3,000 piece reel r7: 3,000 piece reel rohs compliant z: rohs compliant reset timeout period 1: 1ms (min) 2: 20ms (min) 3: 140ms (min) 4: 1120ms (min) generic number temperature range y: ?40c to +125c package code ks: 4-lead sc70 reset threshold number (16 to 50) 05305-014 adm6384yks x d x x -rl 7 figure 15. ordering code structure ordering guide standard models 1, 2 reset threshold (v) reset timeout (ms) temperature range quantity package description package option branding adm6384yks23d3z-r7 2.31 140 ?40c to +125c 3k 4-lead sc70 ks-4 n0r ADM6384YKS26D3Z-R7 2.63 140 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks29d1z-r7 2.93 1 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks29d3z-r7 2.93 140 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks31d1z-r7 3.08 1 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks31d2z-r7 3.08 20 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks34d2z-r7 3.4 20 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks39d2z-r7 3.9 20 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks45d3z-r7 4.5 140 ?40c to +125c 3k 4-lead sc70 ks-4 n0r adm6384yks46d2z-r7 4.63 20 ?40c to +125c 3k 4-lead sc70 ks-4 n0r 1 if ordering nonstandard models, complete the ordering code shown in figure 15 by inserting reset timeout and reset threshold s uffixes. contact sales for availability of nonstandard models. 2 z = rohs compliant part.
adm6384 rev. c | page 12 of 12 notes ?2005C2011 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d05305-0-4/11(c)

▲Up To Search▲

Price & Availability of ADM6384YKS26D3Z-R7

	To Download ADM6384YKS26D3Z-R7 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .