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| 1 ? fn8093.1 isl88011, isl88012, isl88013, isl88014, isl88015 5 ld voltage supervisors with adjustable power-on reset, dual voltage monitoring or watchdog timer capability the isl88011 through isl88015 family of devices offer both fixed and/or adjustable voltage-monitoring that combine popular functions such as power on reset control, watchdog timer, supply voltage supervision, and manual reset assertion in a small 5 ld sot-23 package. unique features on the isl88013 and isl88015 include a watchdog timer with a 51s startup timeout and a 1.6s normal timeout duration. on the is l88011 and isl88014, users can increase the nominal 200ms power on reset timeout delay by adding an external capacitor to the c por pin. both fixed and adjustable voltage monitors are provided by the isl88012. complementary active-low and active-high reset outputs are available on the isl88011, isl88012 and isl88013 devices. all devices provide manual reset capability (see ?product features table? on page 4). seven preprogrammed reset threshold voltages accurate to 1.5% over temperature are offered (see ?ordering information? on page 3). the isl88012, isl88014 and isl88015 have a user-adjustable voltage input available for custom monitoring of any voltage down to 0.6v. all parts are specifically designed for low power consumption and high threshold accuracy. features ? single/dual voltage monitoring supervisors ? fixed-voltage options allow precise monitoring of +2.5v, +3.0v, +3.3v, and +5.0v power supplies ? dual supervisor has one fix ed voltage input and another that is user-adjustable down to 0.6v. ? both rst and rst outputs available ? adjustable por timeout delay options ? watchdog timer with 1.6s normal and 51s startup timeout durations ? manual reset input on all devices ? reset signal valid down to v dd = 1v ? accurate 1.5% voltage threshold ? immune to power-supply transients ? ultra low 5.5a supply current ? small 5 ld sot-23 pb-free package ? pb-free plus anneal available (rohs compliant) applications ? process control systems ? intelligent instruments ? embedded control systems ? computer systems ? critical p and c power monitoring ? portable/battery-powered equipment ? pda and handheld pc devices data sheet december 14, 2006 caution: these devices are sensitive to electrosta tic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | intersil (and design) is a registered trademark of intersil americas inc. copyright intersil americas inc. 2006. all rights reserved all other trademarks mentioned are the property of their respective owners.
2 fn8093.1 december 14, 2006 pinouts isl88011 (5 ld sot-23) top view isl88012 (5 ld sot-23) top view isl88013 (5 ld sot-23) top view isl88014 (5 ld sot-23) top view isl88015 (5 ld sot-23) top view rst /mr gnd rst vdd cpor 1 2 3 5 4 rst /mr gnd rst vdd vmon 1 2 3 5 4 rst /mr gnd rst vdd wdi 1 2 3 5 4 rst /mr gnd vmon vdd cpor 1 2 3 5 4 rst /mr gnd vmon vdd wdi 1 2 3 5 4 isl88011, isl88012, isl8 8013, isl88014, isl88015 3 fn8093.1 december 14, 2006 ordering information part number (notes 1, 2) part marking v thvdd (v) v thvmon (v) temperature range (c) package tape and reel (pb-free) pkg. dwg. # isl88011ih546z-tk agu 4.64 n/a -40 to +85 5 ld sot-23 p5.064 isl88011ih544z-tk agv 4.38 n/a -40 to +85 5 ld sot-23 p5.064 isl88011ih531z-tk agw 3.09 n/a -40 to +85 5 ld sot-23 p5.064 isl88011ih529z-tk agx 2.92 n/a -40 to +85 5 ld sot-23 p5.064 isl88011ih526z-tk agy 2.63 n/a -40 to +85 5 ld sot-23 p5.064 isl88011ih523z-tk agz 2.32 n/a -40 to +85 5 ld sot-23) p5.064 ISL88011IH522Z-TK ahe 2.19 n/a -40 to +85 5 ld sot-23 p5.064 isl88012ih546z-tk ahf 4.64 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih544z-tk ahg 4.38 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih531z-tk ahh 3.09 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih529z-tk ahi 2.92 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih526z-tk ahj 2.63 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih523z-tk ahk 2.32 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88012ih522z-tk ahl 2.19 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88013ih546z-tk ahm 4.64 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih544z-tk ahn 4.38 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih531z-tk aho 3.09 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih529z-tk ahp 2.92 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih526z-tk ahq 2.63 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih523z-tk ahr 2.32 n/a -40 to +85 5 ld sot-23 p5.064 isl88013ih522z-tk ahs 2.19 n/a -40 to +85 5 ld sot-23 p5.064 isl88014ih5z-tk aht n/a 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 isl88015ih5z-tk ahu n/a 0.6 (note 2) -40 to +85 5 ld sot-23 p5.064 notes: 1. intersil pb-free plus anneal products empl oy special pb-free material sets; moldi ng compounds/die attach materials and 100% matte tin plate termination finish, which are rohs compliant and compatible with both snpb and pb-free soldering operations. intersil pb-free products are msl classified at pb-free peak reflow temperatures that meet or exceed the pb-free requirements of ipc/jedec j std-020 2. the voltage trip point can be adjusted to be greater than 0.6v using 2 external resistors. by default, the vthvmon trip point is 0.6v if no external resistors are used. isl88011, isl88012, isl8 8013, isl88014, isl88015 4 fn8093.1 december 14, 2006 functional block diagrams v thmon v dd c por por rst /mr pb gnd osc v dd v thmon wdi por gnd wdt osc r 1 r 2 vmon v dd r 1 r 2 vmon isl88014 isl88015 rst /mr pb v thmon v dd c por por rst /mr pb gnd isl88011 osc v dd rst vmon v ref wdi wdt osc v thmon v dd por rst /mr pb gnd isl88012 rst v thmon v dd por rst /mr pb gnd isl88013 rst product features table function isl88011 isl88012 isl88013 isl88014 isl88015 active-low reset (rst ) xxxxx active-high reset (rst) xxx watchdog timer (wdi) xx dual voltage supervision x adjustable por timeout (c por ) xx manual reset input (mr ) xxxxx fixed trip point voltage xxx adjustable trip point voltage xxx pin descriptions pin name function isl88011 isl88012 isl88013 isl88014 isl88015 11111 rst /mr combined active-low reset output and manual reset input 22222 gnd ground 433 vmon adjustable threshold voltage input 333 rst active-high reset output 44 c por adjustable por timeout delay input 44 wdi watchdog timer input 55555 v dd supply voltage and monitored input isl88011, isl88012, isl8 8013, isl88014, isl88015 5 fn8093.1 december 14, 2006 absolute maximum ratings recommended operating conditions temperature under bias . . . . . . . . . . . . . . . . . . . . . .-40c to +125c storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65c to +150c voltage on any pin with respect to gnd . . . . . . . . . . . . -1.0v to +7v d.c. output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5ma lead temperature (soldering, 10 seconds) . . . . . . . . . . . . . . +300c recommended operating conditions temperature range (industrial) . . . . . . . . . . . . . . . . .-40c to +85c pull-up resistance (r pu ) . . . . . . . . . . . . . . . . . . . . . 5k to 100k thermal resistance (typical, note 3) ja (c/w) 5 ld sot-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 maximum junction temperature (plastic package) . . . . . . . +125c maximum storage temperature range . . . . . . . . . .-65c to +150c maximum lead temperature (soldering 10s) . . . . . . . . . . . . +300c (sot-23 lead tips only) caution: absolute maximum ratings indicate limits beyond whic h permanent damage to the device and impaired reliability may occu r. these are stress ratings provided for information only and functional operation of the de vice at these or any other conditions beyond those indicated in the operational sections of this specification are not implied. for guaranteed specifications and test condi tions, see electrical specifications. the guaranteed specifications apply only for the test conditions listed. some performance characteristics may degrade when the device is not operated under the listed test conditions. note: 3. ja is measured with the component mounted on a high effective therma l conductivity test board in free air. see tech brief tb379 f or details. electrical specifications over the recommended operating conditi ons unless otherwise specified, r pu = 10k . symbol parameter test conditions min typ max units v dd supply voltage range 2.0 5.5 v i dd supply current for isl88011, isl88012, isl88013 v dd = 5.0v 8 11.5 a v dd = 3.3v 7 10 a v dd = 2.5v 5.5 9 a supply current for isl88014, isl88015 v dd = 3.3v 4.5 8 a i li input leakage current (vmon) 100 na i lo output leakage current (vmon) 100 na voltage thresholds v thvdd fixed v dd voltage trip point isl88011, 88012, 88013ih5 46 4.57 4.64 4.71 v isl88011, 88012, 88013ih5 44 4.31 4.38 4.45 v isl88011, 88012, 88013ih5 31 3.04 3.09 3.14 v isl88011, 88012, 88013ih5 29 2.88 2.92 2.96 v isl88011, 88012, 88013ih5 26 2.59 2.63 2.67 v isl88011, 88012, 88013ih5 23 2.29 2.32 2.35 v isl88011, 88012, 88013ih5 22 2.16 2.19 2.22 v v thvdd hyst hysteresis at v dd input v thvdd = 4.64v 46 mv v thvdd = 4.38v 44 mv v thvdd = 3.09v 31 mv v thvdd = 2.92v 29 mv v thvdd = 2.63v 26 mv v thvdd = 2.32v 23 mv v thvdd = 2.19v 22 mv v thvmon adj. reset voltage trip point (note 4) v thvdd = 4.64v 599 605 611 mv v thvdd = 4.38v 597 603 609 mv v thvdd = 3.09v 589 595 601 mv v thvdd = 2.92v 589 595 601 mv v thvdd = 2.63v 589 595 601 mv v thvdd = 2.32v 597 603 609 mv v thvdd = 2.19v 597 603 609 mv v thvmon adj. reset voltage trip point (note 5) 594 600 606 mv isl88011, isl88012, isl8 8013, isl88014, isl88015 6 fn8093.1 december 14, 2006 pin description rst the push-pull rst output is set to v dd (high) whenever 1) the device is first powered up, 2) either v dd or the voltage on vmon falls below their respective minimum voltage sense levels, 3) mr is asserted or 4) the watchdog timeout expires. rst /mr this pin functions as both a reset output and a manual reset input. the rst output functions identically to the complementary rst output but is an open drain output that is pulled to gnd (low) when reset is asserted. the mr input is an active-low debounced input to which a user can connect a push-button to add manual reset capability or drive with active low signal from a controller. v dd the v dd pin is the power supply terminal. it is monitored by the isl88011, isl88012 and isl88013. for these devices, the voltage at this pin is compared against an internal factory-programmed voltage trip point, v thvdd . a reset is first asserted when the device is initially powered up to ensure that the power supply has stabilized. thereafter, reset is again asserted whenever v dd falls below v thvdd . the device is designed with hysteresis to help prevent chattering due to noise. vmon the vmon pin on the isl88012, isl88014 and isl88015 is a monitored input voltage that is user-adjustable. the voltage at this pin is compared against an internal 600mv reference voltage (v thvmon ) and a reset is asserted whenever the monitored voltage falls below this trip point. wdi the watchdog input takes an input from a microprocessor and ensures that it periodically toggles the wdi pin, otherwise the internal watchdog timer runs out and reset is asserted. the internal watchdog timer is cleared whenever the wdi input pin sees a rising or falling edge or the device is manually reset. c por the c por input pin lets users increase the power on reset timeout delay (t por ) by connecting a capacitor between c por and ground. (see figure 3) v thvmon hyst hysteresis voltage (notes 4, 5) 3 mv reset v ol reset output voltage low v dd 3.3v, sinking 0.5ma 0.05 0.40 v v dd < 3.3v, sinking 0.5ma 0.05 0.40 v v oh reset output voltage high v dd 3.3v, sourcing 0.4ma v dd -0.6 v dd -0.4 v v dd < 3.3v, sourcing 0.4ma v dd -0.6 v dd -0.4 v t rpd v th to reset asserted delay 60 s t por por timeout delay isl88012, isl88013, isl88015 140 200 260 ms isl88011, isl88014 with c por = open 200 250 ms c load load capacitance on reset pins 5 pf manual reset v mr mr input voltage 0 100 mv t mr mr minimum pulse width 1 s watchdog timer (note 6) start t wdt startup watchdog timeout period 32 51 64 sec t wdt normal watchdog timeout period 1.0 1.6 2.0 sec t wdps wdi minimum pulse width 100 ns v il watchdog input voltage low 0.3 x v dd v v ih watchdog input voltage high 0.85 x v dd v i wdt watchdog input current 100 na notes: 4. applies to isl88012 5. applies to isl88014 and isl88015. 6. applies to isl88013 and isl88015. electrical specifications over the recommended operating conditi ons unless otherwise specified, r pu = 10k . (continued) symbol parameter test conditions min typ max units isl88011, isl88012, isl8 8013, isl88014, isl88015 7 fn8093.1 december 14, 2006 principles of operation the isl88011 through isl88015 devices provide those functions needed for critical voltage monitoring. these features include power on re set control, customizable supply voltage supervision, watchdog timer capability, and manual reset assertion. by int egrating all of these features into a small 5 ld sot-23 package and using only 5.5a of supply current, the isl88011 through isl88015 devices can assist in lowering system cost, reducing board space requirements, and in creasing the reliab ility of a system. low voltage monitoring during normal operation, these supervisors monitor both the voltage level of v dd (isl88011, isl88012, isl88013) and/or vmon (isl88012, isl88014, isl88015). the device asserts a reset if any of these voltages falls below their respective trip points. the reset signal ef fectively prevents the system from operating during a power failure or brownout condition. this reset signal re mains asserted until v dd and the voltage on vmon exceed their voltage threshold setting for the reset time delay period t por of 200ms (see figure 1). the isl88012, isl88014 and isl88015 allow users to customize the minimum voltage sense level on the vmon input pin. to do this, connect an external resistor divider network to the vmon pin in or der to set the trip point to some voltage above 600mv according to the following equation (see figure 2): figure 1. voltage moni toring timing diagram v dd vmon mr rst t por v thvdd 1v v thvmon t por t por t por >t mr t rpd t rpd rst v intrip 0.6 r 1 r 2 + () r 2 -------------------------- - = (eq. 1) isl88012 v in r 1 r 2 isl88014 isl88015 vmon figure 2. using vmon to monitor v in via resistors isl88011, isl88012, isl8 8013, isl88014, isl88015 8 fn8093.1 december 14, 2006 power on reset (por) applying at least 1v to the v dd pin activates a por circuit which asserts reset (i.e. rst goes high while rst goes low). the reset signals remain asserted until the voltage at v dd and/or vmon rise above the minimum voltage sense level for time period t por . this ensures that the voltages have stabilized. these reset signals provide several benefits: ? it prevents the system microprocessor from starting to operate with insufficient voltage. ? it prevents the processor from operating prior to stabilization of the oscillator. ? it ensures that the monitored device is held out of operation until internal registers are properly loaded. ? it allows time for an fpga to download its configuration prior to initialization of the circuit. adjusting por timeout via c por pin on the isl88011 and isl88014, users can adjust the power on reset timeout delay (t por ) up to many times the normal t por of 250ms. to do this, connect a capacitor between c por and ground (see figure 3). for example, connecting a 30pf capacitor to c por will increase t por from a typical 250ms to about 2.5s. note: care should be taken in pcb layout and capacitor placement in order to reduce stray capacitance as much as possible, which lengthens the t por timeout period. manual reset the manual reset input (mr ) allows the user to trigger a reset by using a push-button switch. the mr input is an active-low debounced input. by connecting a push-button directly from mr to ground, the designer adds manual system reset capability (see figu re 4). reset is asserted if the mr pin is pulled low to less than 100mv for 1 s or longer while the push-button is closed. after mr is released, the reset outputs remain asserted for t por (200ms) and then released. watchdog timer the watchdog timer circuit checks microprocessor activity by monitoring the wdi input pin. the microprocessor must periodically toggle the wdi pin within t wdt (1.6s nominal), otherwise the reset signal is asserted (see figure 5). internally, the 1.6s timer is cleared by either a reset or by toggling the wdi input. besides the 1.6s default timeout during normal operation, these devices also have a longer 51s timeout for startup. during this time, a reset cannot be asserted due to the wdi not being toggled. the longer delay at power-on allows an operating system to boot, an fp ga to initialize, or the system software to initialize without the burden of dealing with the watchdog. symbol table 0 2 3 5 0 102030 c por (pf) t por (s) isl88011 c por isl88014 figure 3. adjusting t por with a capacitor 40 50 60 70 80 4 1 6 v dd rst /mr pb isl88012 r pu isl88013 isl88014 isl88015 isl88011 figure 4. connecting a manual reset push-button waveform inputs outputs must be steady will be steady may change from low to high will change from low to high may change from high to low will change from high to low don?t care: changes allowed changing: state not known n/a center line is high impedance isl88011, isl88012, isl8 8013, isl88014, isl88015 9 fn8093.1 december 14, 2006 figure 5. watchdog timing diagram v dd wdi rst t por v thvdd 1v startt wdt t por t wdt >t wdps 11 fn8093.1 december 14, 2006 figure 16. over/undervoltage monitor typical application circuits (continued) 3.3v v thl @ 3.09v 50k isl8801x-31 v thh @ 3.6v 10k isl88014/isl88015 v dd rst vmon v dd rst 3.3v 100k voltage out of range = p good low 3.3v 100k pgood isl88011, isl88012, isl8 8013, isl88014, isl88015 12 all intersil u.s. products are manufactured, asse mbled and tested utilizing iso9000 quality systems. intersil corporation?s quality certifications ca n be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corpor ation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com fn8093.1 december 14, 2006 isl88011, isl88012, isl8 8013, isl88014, isl88015 small outline transistor plastic packages (sot23-5) d e 1 e e1 c l c c l e b c l a2 a a1 c l 0.20 (0.008) m 0.10 (0.004) c c -c- seating plane 4 5 123 view c view c l r1 r 4x 1 4x 1 gauge plane l1 seating l2 c plane c base metal with c1 b1 plating b p5.064 5 lead small outline transistor plastic package symbol inches millimeters notes min max min max a 0.036 0.057 0.90 1.45 - a1 0.000 0.0059 0.00 0.15 - a2 0.036 0.051 0.90 1.30 - b 0.012 0.020 0.30 0.50 - b1 0.012 0.018 0.30 0.45 c 0.003 0.009 0.08 0.22 6 c1 0.003 0.008 0.08 0.20 6 d 0.111 0.118 2.80 3.00 3 e 0.103 0.118 2.60 3.00 - e1 0.060 0.067 1.50 1.70 3 e 0.0374 ref 0.95 ref - e1 0.0748 ref 1.90 ref - l 0.014 0.022 0.35 0.55 4 l1 0.024 ref. 0.60 ref. l2 0.010 ref. 0.25 ref. n5 55 r 0.004 - 0.10 - r1 0.004 0.010 0.10 0.25 0 o 8 o 0 o 8 o - rev. 2 9/03 notes: 1. dimensioning and tolerance per asme y14.5m-1994. 2. package conforms to eiaj sc-74 and jedec mo178aa. 3. dimensions d and e1 are exclusiv e of mold flash, protrusions, or gate burrs. 4. footlength l measured at reference to gauge plane. 5. ?n? is the number of terminal positions. 6. these dimensions apply to the flat section of the lead between 0.08mm and 0.15mm from the lead tip. 7. controlling dimension: millime ter. converted inch dimen- sions are for reference only. |
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