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mic5317 high - performance single 150ma ldo micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 (408) 944 - 0800 ? fax + 1 (408) 474 - 1000 ? http://www.micrel.com august 23, 2013 revision 1.0 general description the mic5317 is a high performance 150ma low dropout regulator offering high power supply rejection (psrr) in an ultra - small 1mm 1mm package for stringent space requirements and demanding performance. the mic5317 operates from an input voltage from 2.5v to 6.0v and is capable of providing the output voltages of 1.0v to 3.6v making it ideal for usb port or 6v ac adaptor applications. the mic5317 offers 2% initial accuracy, low dropout voltage (155mv @ 150ma), and low ground current (typically 29a). the mic5317 can also be put into a zero - off - mode current state, drawing virtually no current when disabled. the mic5317 is available in several advanced packages inclu ding a lead - free (rohs - compliant) 1mm 1mm thin dfn occupying only 1mm 2 of pcb area, a 75% reduction in board area compared to sc - 70 and 2mm 2mm dfn packages. it is also available in a sot23 - 5 and tsot23 - 5 package. the mic5317 has an operating junction temperature range of ? 40c to 125c. datasheets and support documentation are available on micrel?s web site at : www.micrel.com . features ? tiny 1mm 1mm thin dfn , sot23 - 5 and tsot23 - 5 p ackages ? wide 2.5v to 6 v opera ting range ? 1 50ma guaranteed output current ? stable with 1f ceramic output capacitors ? low dropout voltage: 1 55 mv @ 150ma ? excellent load/line transient response ? low quiescent current: 29 a ? high psrr: 70db ? thermal - shutdown and current - limit protection applications ? usb d ongles ? wireless lans ? pc desktop s, l aptop s, and t ablet s ? battery - powered equipment ? digital still and video cameras ? 5v g eneral p urpose typical application
micrel, inc. mic5317 august 23, 2013 2 revision 1.0 ordering information part number marking code output voltage ( 1 ) temperature range package s ( 2 ) lead finish ( 3 ) mic5317 - 1.0ymt 71 1.0v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 1.2ymt 72 1.2v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 1.5ymt 73 1.5v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 1.8ymt 74 1.8v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 2.5ymt 76 2.5v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 2.8ymt 77 2.8v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 3.0ymt 78 3.0v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 3.3ymt 79 3.3v ? 40c to +125c 4 - pin 1mm 1mm thin dfn pb - free mic5317 - 1.0ym5 1c7 1.0v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 1.2ym5 147 1.2v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 1.5ym5 1f7 1.5v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 1.8ym5 1g7 1.8v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 2.5ym5 1j7 2.5v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 2.8ym5 1m7 2.8v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 3.0ym5 1p7 3.0v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 3.3ym5 1s7 3.3v ? 40c to +125c 5 - pin sot23 pb - free mic5317 - 1.0yd 5 1c7 1.0v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 1.2yd5 147 1.2v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 1.5yd5 1f7 1.5v ? 40c to +125c 5 - pin thin sot23 pb - free mic53171.8yd5 1g7 1.8v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 2.5yd5 1j7 2.5v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 2.8yd5 1m7 2.8v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 3.0yd5 1p7 3.0v ? 40c to +125c 5 - pin thin sot23 pb - free mic5317 - 3.3yd5 1s7 3.3v ? 40c to +125c 5 - pin thin sot23 pb - free note: 1. other v oltage s are available. contact micrel for details. 2. thin dfn = pin 1 identifier. 3. thin dfn is a green, rohs - compliant package. lead finish is nipdau. mold compound is halogen free.
micrel, inc. mic5317 august 23, 2013 3 revision 1.0 pin configuration 4- pin 1mm 1mm thin dfn (mt) (top view) 5- pin sot23 (d5) / tsot23 (m5) (top view) pin description pin number pin name tdfn -4 pin name sot23 -5 pin name tsot23 -5 pin function 1 vout ? ? output voltage. 1 ? vin vin supply input. 2 gnd gnd gnd ground . 3 en en en enable input: active high. high = on; low = off. do not leave floating. 4 vin ? ? supply input. 4 ? nc nc no connect. not internally connected. 5 ? vout vout output voltage. ep epad na na exposed heatsink pad, connect to ground.
micrel, inc. mic5317 august 23, 2013 4 revision 1.0 absolute maximum ratings ( 4 ) supply voltage (v in ) ............................................... 0v to 7 v enable voltage (v en ). ............................................. 0v to v i n power dissipation (p d ) ........................... internally limited (6) lead temperature (soldering, 10sec) ........................ 260c junction temperature (t j ) ........................ ? 40c to +150 c storage temperature (t s ) ......................... ? 65c to +150 c esd rating ( 7) .................................................................. 2kv operating ratings ( 5 ) supply voltage (v in ) ............................................ 2.5 v to 6 v enable voltage (v en ) .............................................. 0v to v i n junction temperature (t j ) ........................ ? 40c to +125c junction thermal resistance 1 mm 1 mm thin dfn - 4 ( ja ) ......................... 240 c/w sot23 - 5 ( ja ) .................................................. 253 c/w tsot23 - 5 ( ja ) ................................................ 253 c/w electrical characteristics ( 8 ) v in = v en = v out + 1v; c in = c out = 1 f; i out = 100 a ; t j = 25c, bold values indicate ? 40c to +125c, unless noted. parameter condition min typ max units output voltage accuracy variation from nominal v out ? 2.0 +2.0 % variation from nominal v out ; ? 40c to +125c ? 3 .0 +3 .0 line regulatio n v in = v out +1v to 6 v; i out = 100a 0.02 0.3 % load regulation ( 9 ) i out = 100 a to 150ma 10 25 mv dropout voltage ( 10 ) i out = 50ma; v out ? 2.8 v i out = 1 50ma; v out ? 2.8 v i out = 50ma; v out < 2.8 v i out = 1 50ma; v out < 2.8 v 55 155 60 180 110 310 135 380 mv ground pin current ( 11 ) i out = 0ma 29 39 a ground pin current in shutdown v en = 0 v 0.05 1 a ripple rejection f = up to 1khz; c out = 1 f f = 1khz ? 1 0khz; c out = 1 f 80 65 db current limit v out = 0v 200 325 550 ma output voltage noise c out = 1 f, 10hz to 100khz 200 v rms enable input enable input voltage logic low 0.2 v logic high 1.2 enable input current v il ?9 0.01 1 a v ih ? 1.2 v 0 .01 1 turn - on time c out = 1 f; i out = 1 5 0 ma 50 125 s notes: 4. exceeding the absolute maximum ratings may damage the device. 5. the device is not guaranteed to function outside its operating ratings. 6. the maximum allowable power dissipation of any ta (ambient temperature) is pd(max) = ( tj(max) ? 7$-$ exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown . 7. devices are esd sensitive. handling precautions are recommended. human body model, 1.5k in series with 100pf . 8. spec ification for packaged product only. 9. regulation is measured at constant junction temperature using low duty cycle pulse testing, changes in output voltage due to heating effects are covered by the thermal regulation specification 10. dropout voltage is defined as the input - to - output differential at which the output voltage drops 2% below its nominal value measured at 1v differential. for outputs below 2.5v, dropout voltage is the input - to - output differential with the minimum input voltage 2.5v. 11. ground pin curre nt is the regulator quiescent current. the total current drawn from the supply is the sum of the load current plus the groun d pin current.
micrel, inc. mic5317 august 23, 2013 5 revision 1.0 typical characteristics
micrel, inc. mic5317 august 23, 2013 6 revision 1.0 typical characteristics (continued)
micrel, inc. mic5317 august 23, 2013 7 revision 1.0 functional characteristics
micrel, inc. mic5317 august 23, 2013 8 revision 1.0 functional block diagram
micrel, inc. mic5317 august 23, 2013 9 revision 1.0 application information mic5317 is a low - noise 150ma ldo. the mic5317 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown . input capacitor the mic5317 is a high - performance, high - bandwidth device. a n input capacitor of 1 f is required from the input to grou nd to provide stability. low - esr ceramic capacitors provide optimal performance at a minimum of space. additional high - frequency capacitors, such as small - valued npo dielectric - type capacitors, help filter out high - frequency noise and are good practice in any rf - based circuit. x5r or x7r dielectrics are recommended for the input capacitor. y5v dielectrics lose most of their capacitance over temperature and are therefore, not recommended . output capacitor the mic5317 requires an output capacitor of 1 f or g reater to maintain stability. the design is optimized for use with low - esr ceramic chip capacitors. high - esr capacitors are not recommended because they may cause high - frequency oscillation. the output capacitor can be increased, but performance has been o ptimized for a 1 f ceramic output capacitor and does not improve significantly with larger capacitance. x7r/x5r dielectric - type ceramic capacitors are recommended because of their temperature performance. x7r - type capacitors change capacitance 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 tempe rature ranges. to use a ceramic - chip capacitor with y5v dielectric, the value must be much higher than an x7r ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range . no - load stability unlike many other voltage regulators, the mic5317 will remain stable and in r egulation with no load. this is especially important in cmos ram keep - alive applications . enable/shutdown the mic5317 comes with an active - high enable pin that allows the regulator to be disabled. forcing the enable pin low disables the regulator and sen ds it into a ?zero? off - mode - current state. in this state, current consumed by the regulator goes nearly to zero. forcing the enable pin high enables the output voltage. the active - high enable pin uses cmos technology and the enable pin cannot be left floa ting; a floating enable pin may cause an indeterminate state on the output . thermal considerations the mic5317 is designed to provide 150ma of continuous current in a very small package. maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. for example if the input voltage is 3.6v, the output voltage is 2.8v, and the output current = 150ma. the actual power dissipation of the regulator circuit can be determined using equation 1 : p d = (v in ? v out1 ) i out + v in i gnd eq. 1 because this device is cmos and the ground current is typically <100a over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for equation 2: p d = ( 3.6 v ? 2.8 v) 15 0ma p d = 0. 120 w eq. 2 to determine the maximum ambient operating temperature of the package, use the junction - to - ambient thermal resistance of the device and equation 3 : ? ? ? ? ? ? ? ? ? = ja a j(max) d(max) t t p eq. 3 t j(max) = 125c, the maximum junction temperature of the die , ja thermal resistance = 2 4 0c/w for the ymt package, and 253 c/w for the sot23 - 5 and tsot23 - 5 package s .
micrel, inc. mic5317 august 23, 2013 10 revision 1.0 substituting p d for p d(max) and solving for the ambient operating temperature will give the max imum operating conditions for the regulator circuit. the junction - to - ambient thermal resistance for the minimum footprint is 2 4 0c/w. the maximum power dissipation must not be exceeded for proper operation. for example, when operating the mic5317 - 2.8ymt at an input voltage of 3.6v and 150ma load with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as shown in equation 4 : 0.120w = (125c ? t a )/(2 4 0c/w) t a = 9 6 c eq. 4 therefore the maximum ambient operating tem perature of 9 6 c is allowed in a 1mm 1mm dfn package. for a full discussion of heat sinking and thermal effects on voltage regulators, refer to the ?regulator thermals? section of micrel?s designing with low - dropout voltage regulators handbook. this information can be found on micrel's website at: http://www.micrel.com/_pdf/other/ldobk_ds.pdf
micrel, inc. mic5317 august 23, 2013 11 revision 1.0 mic5317 - xxymt typical application schematic bill of materials item part number manufacturer description qty. c1, c2 grm155r61a105ke15d murata ( 12) capacitor, 1 f ceramic, 10v, x5 r, size 0 402 2 u1 mic5317 - xxymt micrel, inc. ( 13 ) high - performance single 150ma ldo 1 notes: 12. murata : www.murata.com . 13. micrel, inc.: www.micrel.com .
micrel, inc. mic5317 august 23, 2013 12 revision 1.0 mic5317 - xxym5 /yd5 typical application schematic bill of materials item part number manufacturer description qty. c1, c2 c1005x5r1a105k tdk ( 14) capacitor, 1f ceramic, 10v, x5r, size 0402 2 u1 mic5317 - xxym5 /yd5 micrel, inc .( 15 ) high - performance single 150ma ldo 1 notes: 14. tdk: www.tdk.com . 15. micrel, inc.: www.micrel.com .
micrel, inc. mic5317 august 23, 2013 13 revision 1.0 pcb layout recommendations (1mm 1mm thin dfn) top layer bottom layer
micrel, inc. mic5317 august 23, 2013 14 revision 1.0 package information ( 16) and recommended landing pattern 4-pin 1mm 1mm thin dfn ( mt ) note: 16. package information is correct as of the publication date. for updates and most current information, go to www.micrel.com .
micrel, inc. mic5317 august 23, 2013 15 revision 1.0 package information ( 16) and recommended landing pattern (continued) 5-pin sot23 ( m5 )
micrel, inc. mic5317 august 23, 2013 16 revision 1.0 package information ( 16) and recommended landing pattern (continued) 5- pin tsot23 (d5)
micrel, inc. mic5317 august 23, 2013 17 revision 1.0 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 including liability or warrantie s 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 t o 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. ? 20 13 micrel, incorporated.

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