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maq5283 120v in , 150ma, ultra-low i q , high-psrr linear regulator automotive micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com general description the maq5283 high-performance linear regulator offers a very-wide input operating voltage range, up to 120v dc, and supplies an output current of up to 150ma. the maq5283 is ideal for high input voltage applications such as automotive, industria l, and telecom, because it offers 3% initial accuracy, extremely high power supply rejection ratio (75db at 10khz) and an ultra-low quiescent current of 8a. the maq5283 is optimized for high-voltage line transients, making it i deal for harsh environment applications. the maq5283 is offered in both fixed output voltage (3.3v or 5.0v) and adjustable output voltage (1.23v to 5.5v) options. the maq5283 operates over a ? 40c to +125c temperature range and is avail able in a lead-free, rohs- compliant, epad soic-8 package. data sheet and support documentation are available on the micrel website: www.micrel.com . features ? aec-q100 qualified ? wide input voltage range: 6v to 120v dc ? ultra-low quiescent current: 8a ? 150ma guaranteed output current ? adjustable output from 1.23v to 5.5v ? stable with ceramic capacitors ? ultra-high psrr (75db at 10khz) ? ultra-high line rejection (load dump) ? high output accuracy: ? 3% initial accuracy ? thermal-shutdown and cu rrent-limit protection ? thermally efficient, 8-pin epad soic package applications ? automotive ? industrial applications ? remote keyless entry power supply ? telecom applications ? off-line power supplies ___________________________________________________________________________________________________________ typical applications 0 2 4 6 8 10 12 -50-250 255075100125 quiescent current (a) temperature (c) quiescent supply current vs. temperature v in = 12v v out = 1.23v i out = 0ma october 2012 m9999-100912-a
micrel, inc. maq5283 october 2012 2 m9999-100912-a ordering information part number output voltage top mark temperature range package lead finish maq5283yme adjustable maq5283yme ?40c to + 125 c 8-pin epad soic pb-free maq5283-3.3yme 3.3v maq5283-33yme ?40c to + 125 c 8-pin epad soic pb-free maq5283-5.0yme 5.0v maq5283-50yme ?40c to + 125 c 8-pin epad soic pb-free pin configuration 8-pin epad soic maq5283-x.xyme fixed voltage output (top view) 8-pin epad soic maq5283yme adjustable voltage output (top view) pin description pin number adjustable output fixed output name function 1 1 vin supply voltage input. connec t 1f capacitor from vin to gnd. 2, 3, 7 2, 3, 7 nc not internally connect ed. connect nc to gnd or leave unconnected. 4 4 cpsrr bypass capacitor connection. conn ect 0.1f capacitor from cpsrr to gnd. 5 5 gnd ground. 6 ? fb feedback connection. for external resistor divider to set v out . ? 6 sns sense input. connect sns to vout. 8 8 vout regulator output. connect 10f capacitor from vout to gnd. ep ep epad exposed pad (epad) for thermal dissipation. connect to gnd.
micrel, inc. maq5283 october 2012 3 m9999-100912-a absolute maximum ratings (1) v in to gnd................................................... ?0.3v to +125v v cpsrr to gnd..................................................?0. 3 to +14v v fb , v sns , v out to gnd ................................... ?0.3v to +6v lead temperature (soldering, 10s) .......................... +260c junction temper ature ......................... ?40c t j +125c storage temper ature .........................?65c t a +150c esd ratings (4) hbm ......................................................................... 2kv mm .........................................................................200v operating ratings (2) v in ................................................................. +6v to +120v v out adjust r ange ..................................... +1. 23v to +5.5v junction temper ature ......................... ?40c t j +125c power dissipation (p d )........................... internally limited (3) junction thermal resistance ( ja ) 8-pin epad soic ...............................................41c/w electrical characteristics (5) v in = 12v, c in = 1.0f, c psrr = 0.1f, c out = 10f, i out = 100a, t j = 25c, bold values indicate ?40c t j +125c, unless noted. parameter condition min. typ. max. units power supply input input voltage range 6 120 v quiescent supply current i out = 0 8 14 a output voltage output voltage accuracy variation from nominal v out 100a i out 150ma -5 +5 % line regulation v in = 10v to 120v ? 0.5 0.04 +0.5 % feedback input (adjustable) fb voltage 100a i out 150ma 1.167 1.228 1.289 v fb current 3.2 na current limit current limit v out = 0v 180 300 500 ma ripple rejection 100hz f 1khz 70 db 1khz < f 30khz 75 db power supply rejection ratio i out = 50ma 30khz < f 100khz 65 db power dropout voltage dropout voltage i out = 150ma 1.8 2.8 v thermal protection thermal-shutdown temperature t j rising 155 c thermal-shutdown hysteresis 15 c notes: 1. exceeding an absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. 3. the maximum allowable power dissipation at any t a (ambient temperature) is p d(max) = (t j(max) ? t a ) / ja . exceeding the maximum allowable power dissipation results in excessive die temperature, and causes the regulator to enter thermal shutdown. 4. devices are esd sensitive; use proper handling precautions. human body model, 1.5k in series with 100pf. 5. specifications are for packaged products only.
micrel, inc. maq5283 october 2012 4 m9999-100912-a typical characteristics 0 2 4 6 8 10 12 0 2040608010012 quiescent current (a) input voltage (v) quiescent supply current vs. input voltage 0 v out = 5v i out = 0 0 2 4 6 8 10 12 -50 -25 0 25 50 75 100 125 quiescent current (a) temperature (c) quiescent supply current vs. temperature v in = 12v v out = 1.23v i out = 0ma 4.998 4.999 5.000 5.001 5.002 0 20 40 60 80 100 120 output voltage (v) input voltage (v) output voltage vs. input voltage v out = 5v i out = 100a 4.90 4.95 5.00 5.05 5.10 0 25 50 75 100 125 150 output voltage (v) output current (ma) output voltage vs. output current v in = 12v v out = 5v 4.85 4.90 4.95 5.00 5.05 5.10 5.15 -50 -25 0 25 50 75 100 125 output voltage (v) temperature (c) output voltage vs. temperature v in = 12v v out = 5v i out = 100a 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 255075100125150 dropout voltage (v) output current (ma) dropout voltage vs. output current v out = 5v 0 1 2 3 4 -50-25 0 255075100125 dropout voltage (v) temperature (c) dropout voltage vs. temperature v out = 5v i out = 150ma 0 4 8 12 16 20 -50 -25 0 25 50 75 100 125 fb pin current (na) temperature (c) feedback pin current vs. temperature v in = 12v v fb = 1.228v i out = 0 0 2 4 6 8 10 0 2040608010012 fb pin current (na) input voltage (v) feedback pin current vs. input voltage 0 v fb = 1.228v
micrel, inc. maq5283 october 2012 5 m9999-100912-a typical characteristics (continued) 1.20 1.21 1.22 1.23 1.24 1.25 -50-25 0 255075100125 fb pin voltage (v) temperature (c) feedback pin voltage vs. temperature v in = 12v v out = 5v i out = 100a 1.20 1.21 1.22 1.23 1.24 1.25 0 25 50 75 100 125 150 fb pin voltage (v) output current (ma) feedback pin voltage vs. output current v in = 12v v out = 5v 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 current limit (ma) temperature (c) current limit vs. temperature v in = 12v v out = 0v -0.10 -0.05 0.00 0.05 0.10 -50-25 0 255075100125 line regulation (%) temperature (c) line regulation vs. temperature v in = 10v to 120v v out = 5v i out = 100a 0 10 20 30 40 50 60 70 80 0 25 50 75 100 125 150 case temperature (c) output current (ma) case temperature* (me) vs. output current v in = 12v v out = 5v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 255075100125150 power dissipation (w) output current (ma) power dissipation (me) vs. output current v in = 12v v out = 5v -120 -100 -80 -60 -40 -20 0 20 40 0.01 0.1 1 10 100 1000 ripple rejection (db) frequency (khz) psrr vs. frequency v in = 12v v out = 5.0v i out = 50ma v ripple = 70mv c in = none c psrr = 0.1f c out = 10f case temperature* : the temperature measurement was taken at the hottest point on the maq5283 case mounted on a 2.25-square-inch pcb at an ambient temperature of 25c; see the ? thermal measurements ? section. actual results depend on the size of the pcb, ambi ent temperature, and proximity to other heat emitting components.
micrel, inc. maq5283 october 2012 6 m9999-100912-a functional characteristics
micrel, inc. maq5283 october 2012 7 m9999-100912-a functional characteristics (continued)
micrel, inc. maq5283 october 2012 8 m9999-100912-a detailed description the maq5283 voltage regulator accepts a 6v to 120v input voltage and has an ultra-low 8a typical quiescent current while offering an excellent line transient response and psrr. these features make it ideal for harsh, noisy environments. all options o ffer 150ma of output current. the maq5283yme offers an adjustable output voltage from 1.23v to 5.5v. the maq5283-3.3yme offers a fixed 3.3v output and the maq5283-5. 0yme offers a fixed 5.0v output. the yme packaged devices feature a heat slug to remove heat from the die more effectively. applications information thermal protection the maq5283 has internal thermal shutdown to protect it from excessive heating of the die. when the junction temperature exceeds approxim ately +155c, the output is disabled and the device begins to cool down. the device turns back on when the junction temperature cools by 15c. this results in a cycled output during continuous thermal-overload conditions. current limit the maq5283 features output current-limit protection. the output sustains a continuous short circuit to gnd without damage to the device, but ther mal shutdown often results. the typical value for the current limit of the maq5283 is 300ma. input capacitor connect a 1.0f capacitor from vin to gnd. micrel recommends the c5750x7r2e105m, 1.0f, 250v capacitor made by tdk. when using a different capacitor, make sure that the voltage rating of the capacitor has enough headroom to withstand any potential transient. cpsrr capacitor to maintain high power supply rejection, connect a 0.1f capacitor from cpsrr to gnd. the voltage rating of the capacitor must be at least 14v. output capacitor connect a 10f capacitor from vout to gnd. make sure that the voltage rating of the capacitor is greater than the designed output voltage of the maq5283. output voltage setting for the maq5283yme, v out is programmable from 1.23v to 5.5v using an external resistive divider. v out is set using the following equation: ? ? ? ? ? ? += 1 r2 r1 vv ref out eq. 1 where v ref = 1.228v, and r1 and r2 form the feedback voltage divider from v out to ground. thermal measurements it is always a good idea to measure an ic?s case temperature to make sure that it is within operating limits, but it is easy to get false results. the standard thermocouple that comes with many voltage meters uses a large wire gauge that behaves like a heat-sink. this causes artificially low case temperature measurements. use a thermocouple of 36-gauge wire or smaller, such as the omega (5sc-tt-k-36-36), to minimize the heat- sinking effect. also, apply a thermal compound to maximize heat transfer between the ic and the thermocouple. an infrared thermometer is a recommended alternative. the ir thermometer from op tris has a 1mm spot size, which is ideal for monitoring small surface-mount packages. also, the optional stand makes it easy to keep the beam on the ic for long periods of time.
micrel, inc. maq5283 october 2012 9 m9999-100912-a functional diagram maq5283 adjustable version maq5283 fixed version
micrel, inc. maq5283 october 2012 10 m9999-100912-a maq5283 evaluation board schematic maq5283 evaluation board schematic bill of materials item part number manufacturer description qty. c1 c5750x7r2e105m tdk (1) 1.0f, 250v, 20%, x7r capacitor (2220) 1 c2 08053c104kat2a avx (2) 0.1f 25v 20%, x7r capacitor (0805) 1 c3 0805zd106kat2a avx 10f, 10v, 20%, x5r, capacitor (0805) 1 r1 crcw06030000f vishay/dale (3) 0 , 1% resistor, 0603 1 r2 crcw06032942f vishay/dale 29.4k , 1% resistor, 0603 1 r3 crcw06039531f vishay (3) 9.53k film resistor, size 0603, 1% 1 r4 CRCW06031742F vishay 17.4k film resistor, size 0603, 1% 1 r5 crcw06032802f vishay 28.0k film resistor, size 0603, 1% 1 r6 crcw06036192f vishay 61.9k film resistor, size 0603, 1% 1 u1 maq5283yml micrel (4) 120v in , 150ma, ultra-low i q , high-psrr linear regulator 1 notes: 1. tdk: www.tdk.com . 2. avx: www.avx.com . 3. vishay tel: www.vishay.com . 4. micrel, inc.: www.micrel.com .
micrel, inc. maq5283 october 2012 11 m9999-100912-a pcb evaluation board layout top layer bottom layer
micrel, inc. maq5283 october 2012 12 m9999-100912-a pcb evaluation board layout (continued) evaluation board dimensions
micrel, inc. maq5283 october 2012 13 m9999-100912-a package information 8-pin exposed pad soic (me)
micrel, inc. maq5283 october 2012 14 m9999-100912-a recommended land pattern 8-pin exposed pad soic 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 comple teness of the information furnished in this data sheet. this information is not intended as a warranty and micrel does not assume responsibility for it s 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 other wise, to any intellectual property rights is granted by this document. except as provided in micrel?s terms and conditions of sale for such products, mi crel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products including l iability or warranties relating to fitness for a particular purpose, merchantability, or infringement of an y patent, copyright or other intellectual p roperty right. micrel products are not designed or authorized for use as components in life suppor t appliances, devices or systems where malfu nction of a product reasonably be expected to result in pers onal injury. life support devices or systems are devices or systems that (a) are int ended for surgical impla 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 produc ts for use in life support app liances, devices or systems is a purchaser?s own risk and purchaser agrees to fully indemnify micrel for any damages re sulting from such use or sale. can nt ? 2012 micrel, incorporated.

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