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mic 37110/mic37112 mic37120/mic37122 high - performance, low - noise , 1a ldos mlf and micro leadframe are registered trade marks of amkor technology, inc. micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 ( 408 ) 944 - 0800 ? fax + 1 (408) 474 - 1000 ? http ://www.micrel.com dec ember 2012 m9999 -121312 -a general description the mic37110/ mic3711 2 and mic37120/ mic3712 2 are high - performance, low - noise, low dropout regulators. each of these ldos is capable of sourcing 1a output current, off ers high power supply rejection, and low output noise. these general pu rpose ldos are most suitable for consumer applications such as mult imedia devices, set - top boxes, b l u - ray players, handheld devices, and gaming consoles. the mic37112 and mic37122 feature adjustable output voltages while the mic37110 and mic37120 come in fixed 1.8v output voltage options. all devices feature 2% initial output voltage accuracy, typical dropout of 230mv at 1a, and low ground current. this family of low - noise regulators is available in 2mm x 2mm thin mlf ? , soic - 8 and sot - 223 packages and the y all have an operating junction temperature range of ? 40 c to + 125 c. data sheets and support documentation can be found on micrel?s web site at: www.micrel.com . features ? input voltage range: 2.375v to 5.5v ? output voltage adjustable down to 1.0v (mic37112/mic37122) ? stable with small, 2.2f ceramic output capacitor ? 230mv typical dropout at 1a ? 1a minimum guaranteed output current ? 2.0 % initial accuracy ? low ground current ? high psrr: >60db, up to 1khz ? output auto - disch arge circuit (mic37120/ mic3712 2) ? thermal - shutdown and current - limit protection applications ? mobile phones and consumer multimedia devices ? set - top boxes and blu - ray players ? gaming consoles ? tablets and handheld devices ? gps receivers _____________________ ______________________________________________________________________________________ typical application dropout voltage vs. output current 0 100 200 300 400 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) dropout voltage (mv) v in = 2.5v v adj = 0.95 * 1.0v adjustable option t a = 25oc
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 2 m9999 - 12 13 12 - a ordering information part number (1 ,2 ) output voltage top mark output auto - discharge package mic37110 - 1.8ys 1.8v zhg no sot -223-3l mic37110 -1 .8ym 1.8v ? no soic -8l mic37110 - 1.8ymt 1.8v ghz no 2mm 2mm thin mlf -6l mic37112ym adjustable ? no soic -8l mic37112ymt adjustable azz no 2mm 2mm thin mlf -6l mic37120 - 1.8ym 1.8v ? yes soic -8l mic37120 - 1.8ymt 1.8v 1h8 yes 2mm 2mm thin mlf -6l mic37 122ym adjustable ? yes soic -8l mic37122ymt adjustable zaz yes 2mm 2mm thin mlf -6l note : 1. rohs compliant with ?high - melting solder? exemption. 2. temperature range is - 40 c to +125 c pin configuration sot - 223 (s) mic371x0 - 1.8 (fixed) 2mm x 2mm thin m lf - 6 lead (mt) mic371x x (fixed/adjustable) 8 - pin soic (m) mic371x0 - 1.8 (fixed) 8 - pin soic (m) mic371x2 (adjustable)
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 3 m9999 - 12 13 12 - a pin description pin number sot -223 -3l pin number soic -8 (fixed) pin number soic -8 (adjustable) pin number 2mm 2mm thin mlf -6 l pin name pin description ? 1 1 1 en enable (input): cmos - compatible control input. logic high = enable, logic low = shutdown. 1 2 2 3 in supply (input). 3 3 3 4 out regulator output. ? ? 4 5 adj adjustment input: feedback input. connect to resistiv e voltage - divider network to set the output voltage of the mic37112/mic37122. ? 5 sns output voltage sense input. connect this pin at the point - of - load to monitor the output voltage of the fixed output voltage options. 2, tab 5 -8 5 -8 2 gnd ground. ? 4 ? 6 nc not internally connected
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 4 m9999 - 12 13 12 - a absolute maximum ratings (1) supply voltage (v in ) ......................................... - 0.3v to +6v enable voltage (v en ). ....................................... - 0.3v to +v in adjust pin voltage (v adj ). ................................. - 0.3v to +v in lead temperature (soldering , 5s ) .............................. 260c storage temperature (t s ) ......................... ? 65c to +150c esd rating (3) hbm ......................................................................... 3kv operating ratings (2) supply voltage (v in ) ................................. +2.375v to +5.5v enable voltage (v en ). ............................................. 0v to v in power dissipation (p d(max) )??????internally limited (4) junction temperature (t j ) ........................ ? 40c to +125c package thermal resistance sot - 223 ( ja ) .................................................... 40c/w soic - 8 ( ja ) ....................................................... 63c/w thin mlf - 6 ( ja ) .............................................. 100c/w electrical characteristics (5) v in = v en = v out + 1v; i out = 10ma; c in = 1.0 f ; c out = 2.2 f ; t j = 25 c, bold values indicate ? 40 c t j + 125 c, unless noted. parameter condition min . typ . max . units power supply input input voltage range (v in ) 2.375 5.5 v input supply uvlo 2. 2 v input supply uvlo hysteresis 100 mv ground pin current (6) 10ma i out 1.0a 2 5 0 5 00 a ground current in shutdown v en = v out = 0v 0.1 5 a reference adjust pin voltage adjustable option 0.9 75 1 1.025 v output voltage accuracy fixed option -2 +2 % -2 .5 + 2 .5 load regulation i out = 10ma to 1a - 1.0 + 1.0 % line regulation v in = (v out + 1v) to 5.5v 0. 05 0.5 % adj pin current v adj = 1.0v 0.01 1 a current limit current limit v out = 0v 1.2 2.3 4.0 a dropout voltage dropout voltage (v in ? v out ) (7) i out = 1a 2 3 0 400 mv load discharge resistance (mic37120/mic37122) load discharge resistance v en = 0v; v in = 3.6v; i out = 3ma 30 enable in put enable logic level high 1.2 0.7 5 v enable logic level low 0. 65 0.2 5 v en hysteresis 100 mv en pin current v en = 0.2v (regulator shutdown) 0. 1 1 a v in = v en = 3.6v (regulator enabled) 0.1 1
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 5 m9999 - 12 13 12 - a electrical characteristics (5) (continued) v in = v en = v out + 1v; i out = 10ma; c in = 1.0 f; c out = 2.2 f; t j = 25 c, bold values indicate ? 40 c t j + 125 c, unless noted. parameter condition min. typ. max. units enable input start - up time 140 500 s minimum load current minimum load curren t 10 ma thermal protection over - temperature shutdown t j rising 160 c over - temperature shutdown hysteresis 15 c notes: 1. exceeding the absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. 3. devices are esd sensitive. handling precautions recommended. 4. p d(max) = (t j(max) ? t a ) ja , where ja depends upon the printed circuit layout. see ?applications information? section. 5. specification for packaged product only . 6. i gnd is the quiescent current. i in = i gnd + i out . 7. v do = v in ? v out when v out decreases to 98% of its nominal outpu t voltage with v in = v out + 1v. for output voltages belo w 2.25v, dropout voltage is the input - to - output voltage differential with the minimum input voltage being 2.25v. the m inimum input operating voltage is 2.37 5 v .
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 6 m9999 - 12 13 12 - a typical characteristics dropout voltage vs. input voltage 0 50 100 150 200 250 300 2 3 4 5 6 input voltage (v) dropout voltage (mv) adjustable option v adj = 0v i out = 1a i out = 500ma gnd pin current vs. input voltage 0 100 200 300 400 500 2 3 4 5 6 input voltage (v) ground current (a) v out = v in - 1.0v i out = 1a shutdown ground current vs. input voltage 0.0 0.2 0.4 0.6 0.8 1.0 2 3 4 5 6 input voltage (v) ground current (a) v out = 0v v en = 0v adjust pin voltage vs. input voltage 0.990 0.995 1.000 1.005 1.010 2 3 4 5 6 input voltage (v) adj pin voltage (v) v out = 1.0v i out = 10ma adjust pin current vs. input voltage 0 5 10 15 20 2 3 4 5 6 input voltage (v) adj pin current (na) v adj = 1.0v enable pin current vs. input voltage 0.00 0.05 0.10 0.15 0.20 0.25 2 3 4 5 6 input voltage (v) enable pin current (a) v out = 1.0v i out = 10ma v en = 3.6v current limit vs. input voltage 0 1 2 3 4 2 3 4 5 6 input voltage (v) current limit (a) v out = 0v load regulation vs. input voltage 0.0 0.1 0.2 0.3 0.4 0.5 2 3 4 5 6 input voltage (v) load regulation (%) v out = v in - 1.0v (adjustable option) i out = 10ma to 1a load discharge resistance vs. input voltage 0 20 40 60 80 2 3 4 5 6 input voltage (v) discharge resistance () v en = 0v i out = 3ma
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 7 m9999 - 12 13 12 - a typical characteristics (continued) shutdown ground current vs. temperature 0.0 0.5 1.0 1.5 2.0 -50 -25 0 25 50 75 100 125 temperature (c) ground current (a) v in =2.375v v out = 0v v in uvlo threshold vs. temperature 1.50 1.75 2.00 2.25 2.50 -50 -25 0 25 50 75 100 125 temperature (c) uvlo threshold (v) dropout voltage vs. temperature 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) dropout voltage (mv) v in = 2.375v v adj = 0.95 * 1.0v adjustable option i out = 1a i out = 500ma dropout voltage vs. temperature 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) dropout voltage (mv) v in = 3.3v v adj = 0.95 * 1.0v adjustable option i out = 1a i out = 500ma current limit vs. temperature 0 1 2 3 4 -50 -25 0 25 50 75 100 125 temperature (c) current limit (a) v in = 2.5v v out = 0v adjust pin voltage vs. temperature 0.98 0.99 1.00 1.01 1.02 -50 -25 0 25 50 75 100 125 temperature (c) adj pin voltage (v) v in = 2.5v v out = 1.5v i out = 10ma adjust pin current vs. temperature 0 5 10 15 20 -50 -25 0 25 50 75 100 125 temperature (c) adj pin current (na) v in = 3.3v v adj = 1.0v line regulation vs. temperature 0.0 0.2 0.4 0.6 0.8 1.0 -50 -25 0 25 50 75 100 125 temperature (c) line regulation (%) v in = 2.5v to 5.5v v out = 1.5v i out = 10ma 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 ground current (a) temperature ( c) gnd pin current vs. temperature v in = 2.5v v out = 1.5v i out = 500ma
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 8 m9999 - 12 13 12 - a typical characteristics (continued) dropout voltage vs. output current 0 100 200 300 400 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) dropout voltage (mv) v in = 2.5v v adj = 0.95 * 1.0v adjustable option dropout voltage vs. output current 0 100 200 300 400 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) dropout voltage (mv) v in = 3.3v v adj = 0.95 * 1.0v adjustable option adjust pin voltage vs. output current 0.990 0.995 1.000 1.005 1.010 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) adj pin voltage (v) v in = 2.5v v out = 1.8v line regulation vs. output current -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) line regulation (%) v in = 2.5v to 5.5v v out = 1.4v gnd pin current vs. output current 0 100 200 300 400 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) ground current (a) v in = 2.5v v out = 1.8v output noise vs. frequency 0.001 0.01 0.1 1 10 0.01 0.1 1 10 100 1000 frequency (khz) output noise (v/hz) noise spectral density v in =2.5v v out = 1.8v i out = 500ma c out = 10f psrr vs. frequency -80 -70 -60 -50 -40 -30 -20 -10 0 10 0.01 0.1 1 10 100 1000 frequency (khz) ripple rejection (db) gain (db) v in = 2.8v v out = 2.2v v ripple = 80mv i out = 1a c in = 1uf c out = 10uf -80 -70 -60 -50 -40 -30 -20 -10 0 10 0.01 0.1 1 10 100 1000 ripple rejection (db) frequency (khz) psrr vs. frequency gain (db) v in =2.8v v out = 1.8v v ripple = 80mv i out = 100ma c in = 0uf c out = 10uf
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 9 m9999 - 12 13 12 - a typical characteristics (continued) power dissipation vs. output current 0.0 0.3 0.5 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) power dissipation (w) v in = 3.3v v out = 2.5v power dissipation vs. output current 0.0 0.3 0.5 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) power dissipation (w) v in = 2.5v v out = 1.8v case temperature* (ym) vs. output current 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) case temperature (c) v in = 3.3v v out = 2.5v case temperature* (ys) vs. output current 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 output current (a) case temperature (c) v in = 2.5v v out = 1.8v case temperature* : the temperature measurement was taken at the hottest point on the mic371xx that was case mounted on a 2.25 square inch pcb at an ambient temperature of 25 c; see ?thermal measurement? section. actual results will depend upon the size of the pcb, ambient temperat ure and proximity to other heat - emitting components.
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 10 m9999 - 12 13 12 - a functional characteristics
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 11 m9999 - 12 13 12 - a functional characteristics (continued)
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 12 m9999 - 12 13 12 - a functional characteristics (continued)
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 13 m9999 - 12 13 12 - a functiona l diagrams mic37110 functional diagram ? fixed voltage mic37112 functional diagram ? adjustable voltage
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 14 m9999 - 12 13 12 - a application information the mic37110/2 and mic37120/2 are hi gh - performance, low - noise , low - v oltage regulators suitable for moder ate current consumer applications such as mobile phones, set - top boxes, and gaming consoles. the mic37110/2 and mic37120/2 are capable of sourcing 1a output , offer high psrr and low output noise. with a 400 mv dropout voltage at full load and over temperatu re, these ics are especially valuable in battery - powered systems and as high - efficiency noise ?lters in post - regulator applications. the mic371 10/ 1 2 and mic37120 / 2 2 regulator s are fully protected from damage due to fault conditions. linea r current limitin g is provided. output current during overload conditions is constant. thermal shutdown disables the device when the die temperature exceeds the maximum safe operating temperature. the output structure of these regulators allows voltages in excess of the de sired output v oltage to be applied without reverse current ?ow. figure 1. capacitor requirements output capacitor the mic37110/2 and mic37120/2 requires an output capacitor to maintain stability and improve transient response. the mic37110/2 and mic37120/2 require a 2.2 f or greater output capacitor to maintain stability. larger capacitor values may be used but the device is optimized for 2.2 f and optimum performance is achieved with the use of low esr ceramic capacitors. ultra - low esr ceramic capacitors are recom mended for output capacitance of 10f or greater to help improve transient response and noise reduction at high frequency. x7r/x5r dielectric - type ceramic capacitors are recommended because of their temperature performance. x7r - type capacitors change capac itance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. z5u and y5v dielectric capacitors change value by as much as 50% and 60% respectively over their operating temperature ranges. to use a ceramic chip ca pacitor with y5v dielectric, the v alue must be much higher than a x7r ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. input capacitor an input capacitor of 1f or greater is recommended when the dev ice is more than four inches away from the bulk ac supply capacitance or when the supply is a battery. small, surface m ount, ceramic chip capacitors can be used for bypassing. larger values will help to improve ripple rejection by bypassing the input to th e regulator, further improving the integrity of the output voltage. place the external capacitors for the input/output as close to the ic as possible. see figure 1. enable input the tmlf - 6 (thin mlf) and soic - 8 package options feature an active - high enabl e input (en) that allows for on/off control of the regulator. current drain reduces to ?zero? when the device is shutdown, with only microamperes of leakage current. the en input has ttl/cmos compatible thresholds for simple logic interfacing. en may be di rectly tied to v in . transient response and 3.3v to 2.5v or 2.5v to 1.8v, 1.65v or 1.5v conversion the mic37110/02 and mic37120/22 ha ve excellent transient response to variations in input voltage and load current. the device has been designed to respond qui ckly to load current variations and input voltage variations. large output capacitors are not required to obtain this performance. a standard 10f output capacitor (ceramic) is all that is required. larger values help to improve performance even further.
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 15 m9999 - 12 13 12 - a minimum load current the mic37112 /22 regulator is specified between finite loads. if the output current is too small, leakage currents dominate and the output voltage rises. a 10ma minimum load current is necessary for proper regulation. adjustable regulat or design figure 2. adjustable regulator with resistors the mic37112 and mic37122 allow programming the output voltage anywhere between 1.0 v and 5.0v by placing a resistor divider network from out to gnd and is determined by the following equation: ? ? ? ? ? ? + = 1 r2 r1 v v adj out where: v out is the desired output voltage and v adj = 1.0v. two resistors are used. resistors can be quite large, but the resistor (r1) value between the out pin and the adj pin should not exceed 10 k?. larger values can cause instability. the resistor values are calculated from the previous equation, resulting in the following: ( ) 1 v r2 r1 out ? = figure 2 shows component definition . applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation . see table 1 for a list of resistor combinations to set the output voltage. a 1% tolerance is recommended for both r1 and r2. v out r1 r2 1.0v 0 ? 1.1v 10.0? 100? 1.2v 20.0? 100? 1.5v 49.9? 100? 1.8v 80.6? 100? 2.2v 121? 100? 2.5v 150? 100? 3.0v 200? 100? 3.3v 232? 100? 3.6v 261? 100? table 1. resistor selection for specific v out thermal measurements it is always wise the measure the ic?s case temperature to make sure tha t it is within its operating limits. although this might seem like a very elementary task, it is very easy to get to get erroneous results. the most common mistake is to use the standard thermal couple that comes with the thermal voltage meter. this therma l couple wire gauge is large, typically 22 gauge, and behaves like a heatsink, resulting in a lower case measurement. there are two suggested methods for measuring the ic case temperature: a thermal couple or an infrared thermometer. if a thermal couple is used, it must be constructed of 36 gauge wire or higher to minimize the wire heatsinking effect. in addition, the thermal couple tip must be covered in either thermal grease or thermal glue to make sure that the thermal couple junction is making good cont act to the case of the ic. this thermal couple from omega (5sc - tt - k - 36- 36) is adequate for most applications. to avoid this messy thermal couple grease or glue, an infrared thermometer is recommended. most infrared thermometers? spot size is too large for an accurate reading on small form factor ics. however, an ir thermometer from optris has a 1mm spot size, which makes it ideal for the mic 371xx 2 mm x 2 mm thin mlf package. also, get the optional stand. the stand makes it easy to hold the beam on the ic fo r long periods of time. power soic - 8 thermal characteristics one of the secrets of the mic37110/37120?s performance is its power so - 8 package featuring half the thermal resistance of a standard so - 8 package. lower thermal resistance means more output curre nt or higher input voltage for a given package size.
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 16 m9999 - 12 13 12 - a lower thermal resistance is achieved by joining the four ground leads with the die attach paddle to create a single - piece electrical and thermal conductor. this concept has been used by mosfet manufactur ers for years, proving very reliable and cost effective for the user. thermal resistance consists of two main elements, jc (junction - to - case thermal resistance) and ca (case - to - ambient thermal resistance). see figure 3. jc is the resistance from the die to the leads of the package. ca is the resistance from the leads to the ambient air and it includes cs (case - to - sink thermal resistance) and sa (sink - to - ambient thermal resistance). figure 3. thermal resistance using the power soic - 8 reduces the jc dramatically and allows the user to reduce ca . the total thermal resistance, ja (junction - to - ambient thermal resis tance) is the limiting factor in calculating the maximum power dissipation capability of the device. typically, the power soic - 8 has a jc of 20c/w, this is significantly lower than the standard soic - 8 which is typically 75c/w. ca is reduced because pin s 5 through 8 can now be soldered directly to a ground plane which significantly reduces the case - to - sink thermal resistance and sinks to ambient thermal resistance. low - dropout linear regulators from micrel are rated to a maximum junction temperature of 125c. it is important not to exceed this maximum junction temperature during operation of the device. to prevent this maximum junction temperature from being exceeded, the appropriate ground plane heat sink must be used. figure 4. copper area vs. pow er so -8 power dissipation figure 4 shows copper area versus power dissipation with each trace corresponding to a different temperature rise above ambient. from these curves, the minimum area of copper necessary for the part to operate safely can be determ ined. the maximum allowable temperature rise must be calculated to determi ne operation along which curve: t = t j(max) ? t a(max) t j(max) = 125c t a(max) = maximum ambient operating temperature. for example, the maximum ambient temperature is 50c, the t is determined as follows: t = 125c ? 50c t = 75c using figure 4, the minimum amount of required copper can be determined based on the required power dissipation. power dissipation in a linear regulator is calculated as follows: p d = (v in ? v out ) i out + v in i gnd
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 17 m9999 - 12 13 12 - a if we use a 2.5v output device and a 3.3v input at an output current of 1a, then our power dissipation is as follows: p d = (3.3v ? 2.5v) 1a + 3.3v 11ma p d = 800mw + 36mw p d = 836mw from figure 4, the minimum amount of copper required to operate this application at a t of 75c is 160mm 2 . quick method determine the power dissipation requirements for the design along with the maximum ambient temperature at which the device will be operated. refer to figure 5, which shows safe operating curves for three different ambient temperatures: 25c, 50c and 85c. from these curves, the minimum amount of copper can be determined by knowing the maximum power dissipation required. if the maximum ambient temperature is 50c and the power dissipation is as above, 836mw, the curve in f igure 5 shows that the required area of copper is 160mm 2 . the ja of this package is ideally 63c/w, but it will vary depending upon the availability of copper ground plane to which it is attached. figure 5. copper area vs. po wer - soic power dissipation
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 18 m9999 - 12 13 12 - a package information sot - 223 (s)
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 19 m9999 - 12 13 12 - a package informati on (continued) 6 - pin 2 mm 2 mm thin mlf (mt)
micrel, inc. mic37110/mic37112 mic37120/mic37122 dec ember 2012 20 m9999 - 12 13 12 - a package information (continued) 8 - pin soic (m) micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474 - 1000 web http://www.micrel.com micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in th is data sheet. this information is not intended as a warranty and micrel does not assume responsibility for its use. micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. no license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in micrel?s terms and conditions of sale for such products, micrel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products includ ing liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right . micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. a purchaser?s use or sale of micrel products for use in life support appliances, devices or systems is a purchaser?s own risk a nd purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 201 2 micrel, incorporated.

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