_______________________________________________________________ maxim integrated products 1 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maxim-ic.com. max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package general description the max16072/MAX16073/max16074 ultra-small, ultra- low-power, microprocessor (p) supervisory circuits feature a precision band-gap reference, comparator, and internally trimmed resistors that set the threshold voltage. designed to monitor the system supply voltage and assert an output during power-up, power-down, and brownout conditions, these devices provide excel - lent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltage from 1.8v to 3.6v. the max16072 has a push-pull, active-low reset output, the MAX16073 has a push-pull, active-high reset output, and the max16074 has an open-drain active-low reset output. the devices are designed to ignore fast tran - sients on v cc . the devices also include a manual reset input ( mr ). the max16072/MAX16073/max16074 are available in a 1mm x 1mm, space-saving, 4-bump, chip-scale pack - age (ucsp tm ). applications portable/battery-powered equipment cell phones pdas mp3 players digital cameras features s ultra-low, 0.7a supply current s ultra-small (1mm x 1mm), 4-bump ucsp s 20s, 8ms, 34ms, and 140ms reset timeout options available s factory-trimmed reset thresholds available from 1.58v to 3.08v in approximately 100mv increments s q 2.5% threshold accuracy over temperature s manual reset input s guaranteed reset valid to v cc = 1.0v s immune to short v cc transient 19-5112; rev 0; 1/10 + denotes a lead(pb)-free/rohs-compliant package. ordering information typical operating circuit note: all devices are specified over the -40 n c to +85 n c operat - ing temperature range. insert the desired suffix numbers (from table 1) into the blanks rs_ _d to indicate the reset trip threshold. insert the desired suffix number (from table 2) into the blank d_+ to indicate the reset timeout. minimum order quantity may apply. ucsp is a trademark of maxim integrated products, inc. reset input ( ) for the MAX16073 only p (reset)/ reset v cc v cc gnd mr max16072 MAX16073 max16074 v cc gnd part reset output type pin- package max16072 rs_ _d_+ push-pull, active-low 4 ucsp MAX16073 rs_ _d_+ push-pull, active-high 4 ucsp max16074 rs_ _d_+ open-drain, active-low 4 ucsp
2 ______________________________________________________________________________________ max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package 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. (voltages referenced to gnd.) v cc , mr .................................................................. -0.3v to +6v reset, reset push-pull ......................... -0.3v to (v cc + 0.3v) reset open-drain .................................................. -0.3v to +6v output current (all pins) ................................................. q 20ma continuous power dissipation (t a = +70 n c) 4-bump ucsp (derate 3mw/ n c above +70 n c) .......... 239mw operating temperature range .......................... -40 n c to +85 n c storage temperature range ............................ -65 n c to +150 n c junction temperature ..................................................... +150 n c soldering temperature (reflow) ...................................... +260 n c electrical characteristics (v cc = 1.5v to 2.75v, t a = -40 n c to +85 n c, unless otherwise noted. typical values are at t a = +25 n c and v cc = 3.6v.) (note 1) absolute maximum ratings parameter symbol conditions min typ max units operating voltage range v cc t a = 0 n c to +85 n c 1.0 5.5 v t a = -40 n c to +85 n c 1.2 5.5 supply current i cc v cc = 1.8v for v th p 1.66v 0.7 1.2 f a v cc = 3.6v, no load 1.0 1.5 detector threshold v th see table 1 v cc falling, t a = +25 n c v th - 1.5% v th v th + 1.5% v v cc falling, t a = -40 n c to +85 n c v th - 2.5% v th v th + 2.5% detector threshold hysteresis v hyst v cc rising, v th p 1.66v (note 2) 6.3 mv detector threshold tempco d v th / n c (note 2) 40 ppm/ n c mr input mr input high voltage v ih 0.7 x v cc v v il 0.7 x v cc mr pullup resistance 25 50 75 k i reset /reset output (note 3) output-voltage low v ol v cc r 1.2v, i sink = 100 f a 0.4 v v cc r 1.65v, i sink = 1ma 0.3 output-voltage high v oh v cc r 1.65v, i source = 500 f a 0.8 x v cc v v cc r 1.2v, i source = 50 f a 0.8 x v cc open-drain reset output leakage current reset not asserted (note 2) 0.1 f a timing mr minimum pulse width t mpw (note 2) 0.8 f s mr glitch rejection t egr (note 2) 100 ns mr to reset/ reset propagation delay t off mr falling 1 2 f s t on mr rising 200 400 ns v cc to reset delay t dl v cc = (v th + 100mv) to (v th -100mv) 20 90 f s
_______________________________________________________________________________________ 3 max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package electrical characteristics (continued) (v cc = 1.5v to 2.75v, t a = -40 n c to +85 n c, unless otherwise noted. typical values are at t a = +25 n c and v cc = 3.6v.) (note 1) note 1: production testing done at t a = +25 n c only. overtemperature limits are guaranteed by design and are not production tested. note 2: guaranteed by design. note 3: reset is guaranteed down to v cc = 1.0v. typical operating characteristics (t a = +25c, unless otherwise noted.) supply current vs. supply voltage max16072 toc01 supply voltage (v) supply current ( a) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1 2 3 4 5 0 1.0 5.5 supply current vs. temperature max16072 toc02 temperature ( c) supply current ( a) 60 35 10 -15 0.5 1.0 1.5 2.0 2.5 3.0 0 -40 85 v cc = 5v v cc = 3v v cc = 1.8v normalized reset threshold vs. temperature max16072 toc03 temperature ( c) normalized reset threshold (%) 60 35 10 -15 -0.2 -0.1 0 0.1 0.2 0.3 -0.3 -40 85 v cc falling v cc rising parameter symbol conditions min typ max units reset active timeout period t rp v cc rising, v cc = (v th - 100mv) to (v th + 100mv) max1607_rsd0+ 20 80 120 f s max1607_rsd1+ 8 13 17 ms max1607_rsd2+ 34 52 69 ms max1607_rsd3+ 140 210 280 ms
4 ______________________________________________________________________________________ max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package typical operating characteristics (continued) (t a = +25c, unless otherwise noted.) output low voltage vs. sink current max16072 toc04 i sink (ma) v ol (v) 18 16 2 4 6 10 12 8 14 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 0 0 20 v cc = 5v v cc = 3v v cc = 1.8v output high voltage vs. source current max16072 toc05 v oh (v) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 i source (ma) 18 16 2 4 6 10 12 8 1 4 0 20 v cc = 1.8v v cc = 3v v cc = 5v maximum transient duration vs. reset threshold overdrive max16072 toc06 reset threshold overdrive (mv) transient duration ( s) 100 10 5 10 15 20 25 30 35 40 45 50 0 1 1000 v rst = 1.63v reset occurs above lines v rst = 3.08v v cc to reset propagation delay vs. temperature max16072 toc07 propagation delay ( s) 20 40 60 80 0 temperature ( c) 60 35 10 -15 -40 85 v od = overdrive voltage v cc falling v od = 100mv v od = 10mv v od = 20mv v od = 200mv max16072 toc08 temperature ( c) propagation delay ( s) 60 35 10 -15 20 40 60 80 100 120 0 -40 85 v od = 20mv v od = 200mv v od = 100mv v cc to reset propagation delay vs. temperature v od = overdrive voltage v cc rising v od = 10mv mr to reset delay (t on ) vs. v cc max16072 toc09 v cc (v) reset delay (ns) 2.475 2.200 1.925 30 60 90 120 150 0 1.650 2.750 mr rising mr to reset delay (t off ) vs. v cc max16072 toc10 v cc (v) reset delay ( s) 2.475 2.200 1.925 0.25 0.50 0.75 1.00 1.25 0 1.650 2.750 mr falling mr turn-on max16072 toc11 mr 1v/div 100ns/div reset 1v/div mr turn-off max16072 toc12 mr 1v/div 200ns/div reset 1v/div
_______________________________________________________________________________________ 5 max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package bump description bump configuration ucsp ( ) for the MAX16073 only max16072 MAX16073 max16074 top view (bump side down) 1 2 b a + gnd v cc mr reset/ (reset) bump name function max16072 MAX16073 max16074 a1 a1 a1 gnd ground b1 reset active-low push-pull reset output. reset changes from high to low when v cc drops below the detector threshold (v th ) or mr is pulled low. reset remains low for the reset timeout period after v cc exceeds v th and mr is high. when mr is low, reset is low. b1 reset active-high push-pull reset output. reset changes from low to high when v cc drops below the detector threshold (v th ) or mr is pulled low. reset remains high for the reset timeout period after v cc exceeds v th and mr is high. when mr is low, reset is high. b1 reset active-low open-drain reset output. reset changes from high- impedance to active-low when v cc drops below the detector thresh - old (v th ) or mr is pulled low. reset remains low for the reset timeout period after v cc exceeds the reset threshold and mr is high. when mr is low, reset is low. a2 a2 a2 v cc supply voltage and input for the reset threshold monitor b2 b2 b2 mr active-low manual-reset input. drive low to force a reset. reset remains active as long as mr is low and for the reset timeout period (if applicable) after mr is driven high. mr has an internal pullup resistor connected to v cc, and may be left unconnected if not used.
6 ______________________________________________________________________________________ max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package functional diagrams detailed description the max16072/MAX16073/max16074 ultra-small, ultra- low-power, p supervisory circuits feature a precision band-gap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. designed to monitor the system supply voltage and an output during power-up, power-down, and brownout conditions, these devices provide excellent circuit reli - ability and low cost by eliminating external components and adjustments when monitoring nominal system volt - age from 1.8v to 3.6v. the max16072 has a push-pull active-low reset output, the MAX16073 has a push-pull active-high reset output, and the max16074 has an open-drain active-low reset output. the devices are designed to ignore fast tran - sients on v cc . the devices also include a manual reset input ( mr ). when mr is low, reset is asserted. when mr is high and v cc is above the detector threshold (v th ), reset is not asserted. supply and monitored input (v cc ) the max16072/MAX16073/max16074 operate with a v cc supply voltage from 1.2v to 2.75v. v cc has a rising threshold of v th + v hyst and a falling threshold of v th . when v cc rises above v th + v hyst and mr is high, reset goes high (reset goes low) after the reset time - out period (t rp ). see figure 1. when v cc falls below v th , reset goes low (reset goes high) after a fixed delay (t rd ). figure 1. max16072/MAX16073/max16074 timing diagram ( ) MAX16073 only reset timeout reset (reset) v cc gnd mr max16074 max16072 MAX16073 reset timeout reset v cc gnd mr mr t mp w t on t dl t rp t off t on t < t eg r t < t mpw reset v cc v th v th + v hyst
_______________________________________________________________________________________ 7 max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package manual reset input ( mr ) many f p-based products require manual-reset capabil - ity, allowing the operator, a test technician, or external logic circuit to initiate a reset. a logic-low on mr asserts reset. reset remains asserted while mr is low, and for the reset active timeout period (t rp ) or delay (t on ) after mr returns high. this input has an internal 50k i pullup resistor, so it can be left unconnected if it is not used. mr can be driven with ttl or cmos logic levels, or with open-drain/collector outputs. for manual operation, connect a normally open momentary switch from mr to gnd; external debouncing circuitry is not required. if mr is driven from long cables or if the device is used in a noisy environment, connect a 0.1 f f capacitor from mr to ground to provide additional noise immunity. applications information interfacing to p with bidirectional reset pins since reset on the max16074 is open-drain, this device interfaces easily with f ps that have bidirectional reset pins. connecting the f p supervisors reset output directly to the f ps reset pin with a single pullup resis - tor allows either device to assert reset (figure 2). negative-going v cc transients the max16072/MAX16073/max16074 family of devic - es is relatively immune to short-duration, negative- going v cc transients (glitches). the typical operating characteristics show the maximum transient duration vs. reset threshold overdrive graph, for which reset pulses are not generated. the graph shows the maxi - mum pulse width that a negative-going v cc transient may typically have when issuing a reset signal. as the amplitude of the transient increases, the maximum allow - able pulse width decreases. figure 2. interfacing to p with bidirectional reset pins table 1. factory trimmed reset thresholds table 2. reset timeout periods reset input v cc p v cc reset gnd gnd v cc mr max16074 motorola 68hcxx threshold suffix reset trip threshold (v) t a = +25 n c t a = -40 n c to +85 n c typ min max 15 1.58 1.54 1.61 16 1.63 1.60 1.66 17 1.67 1.62 1.71 18 1.80 1.76 1.85 19 1.90 1.85 1.95 20 2.00 1.95 2.05 21 2.10 2.05 2.15 22 2.20 2.145 2.25 23 2.32 2.262 2.375 24 2.40 2.34 2.46 25 2.50 2.437 2.562 26 2.63 2.564 2.69 27 2.70 2.633 2.768 28 2.80 2.63 2.87 29 2.93 2.857 3.0 30 3.00 2.925 3.075 31 3.08 3.003 3.15 reset timeout periods suffix min typ max units 0 20 80 120 f s 1 8 13 17 ms 2 34 52 69 ms 3 140 210 280 ms
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 8 maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2010 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. max16072/MAX16073/max16074 p supervisory circuits in 4-bump (1mm x 1mm) chip-scale package package information for the latest package outline information and land patterns, go to www.maxim-ic.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 document no. 4 ucsp r41c1-1 21-0242 chip information process: bicmos
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