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MIC94300 200ma switch with ripple blocker ? technology ripple blocker is a trademark of micrel, inc mlf and micro leadframe are registered trademarks 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 general description the MIC94300 is an integrated load switch that incorporates micrel?s ripple blocker ? active filter technology. the MIC94300 provides high-frequency ripple attenuation (switching noise rejection) for applications where a switching noise cannot be tolerated by sensitive downstream circuits such as in rf applications. a low- voltage logic enable pin disconnects the pass element and places the MIC94300 into a low current-shutdown state when disabled. the MIC94300 operates from an input voltage of 1.8v to 3.6v, allowing true load switching of low-voltage power rails in any electronic device. the output voltage (v out ) is set at a fixed drop (typically 170mv) from the input voltage (v out = v in ? 170mv). this maintains high efficiency independent of given load conditions and currents. packaged in a 0.88mm x 0.88mm 4-ball csp or 4-pin 1.2mm x 1.6mm thin mlf ? package, the MIC94300 has a junction operating 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 ? 1.8v to 3.6v input voltage range ? active noise rejection over a wide frequency band ? >60db from 40khz to 5mhz ? rated to 200ma output current ? current-limit and thermal-limit protected ? ultra-small 0.88mm x 0.88mm 4-ball csp ? 1.2mm x 1.6mm, 4-pin thin mlf ? ? logic-controlled enable pin ? ? 40 c to +125 c junction temperature range applications ? smart phones ? tablet pc/notebooks and webcams ? digital still and video cameras ? videoconferencing ? bar-code scanners ? global positioning systems ? automotive and industrial applications __ _______________________________________________________________________________________________ typical application psrr c out = 1f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in(nom) + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m february 2012 m9999-020312-a
micrel, inc. MIC94300 february 2012 2 m9999-020312-a ordering information part number marking code package lead finish MIC94300ycs af 0.88mm 0.88mm wlcsp pb-free MIC94300ymt 1,2 43z 1.2mm 1.6mm thin mlf ? pb-free notes: 1. thin mlf ? = pin 1 identifier. 2. thin mlf ? is a green rohs-compliant package. lead fini sh is nipdau. mold compound is halogen free. pin configuration top view top view 4-ball 0.88mm 0.88mm csp (cs) 4-pin 1.2mm 1.6mm thin mlf ? (mt) pin description pin number (thin mlf ? ) ball number (csp) pin name pin name 1 b2 en enable input. a logic high signal on this pin enables the part. logic low disables the output. do not leave floating. 2 b1 gnd ground. 3 a1 vout power switch output. 4 a2 vin power switch input and chip supply. ep ? epad exposed heatsink pad. connect to ground for best thermal performance.
micrel, inc. MIC94300 february 2012 3 m9999-020312-a functional block diagram
micrel, inc. MIC94300 february 2012 4 m9999-020312-a absolute maximum ratings (1) input voltage (v in ) ........................................... ? 0.3v to + 4v output voltage (v out ). .................................... ? 0.3v to + 4v enable voltage (v en ).................. ? 0.3v to v in + 0.3v or + 4v lead temperature (soldering, 10s )............................ 260c storage temperature (t s )......................... ? 65c to + 150c esd rating (3) .................................................................. 3kv operating ratings (2) input voltage (v in )........................................ +1.8v to +3.6v enable voltage (v en ).............................................. 0v to v in junction temperature (t j ) ........................ ?40c to +125c junction thermal resistance 0.88mm x 0.88mm wlcsp ( ja ) .....................250c/w 1.2mm x 1.6mm thin mlf ? ( ja ).....................173c/w electrical characteristics (4) v in = v en = 3.6v; i out = 100a; c out = 1f; t a = 25c, bold values indicate ?40 c t j +125 c, unless noted. parameter condition min. typ. max. units input voltage 1.8 3.6 v voltage drop v in ? v out , ? 40c t j + 85 c 170 250 mv f = 20khz, i out = 100ma 45 v in ripple rejection (psrr) f = 100khz to 5mhz, i out = 100ma 60 db total output noise f = 10hz to 100khz 98 v rms current limit v out = 0v 200 315 400 ma turn-on time en controlled 40 150 s load regulation 100a to 100ma 10 mv ground current i out = 100a 138 200 a shutdown current v en = 0v 0.2 a enable input logic low 0.4 v input logic high 1.0 v input current 0.01 1 a 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 pr ecautions recommended. human body model, 1.5k ? in series with 100pf. 4. specification for packaged product only.
micrel, inc. MIC94300 february 2012 5 m9999-020312-a typical characteristics psrr c out = 1f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) i out = 10ma i out = 200ma i out = 100ma v in = 3.6v + 40mvpp 10 100 1k 10k 100k 1m 10m psrr c out = 0.47f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) i out = 10ma i out = 200ma i out = 100ma v in = 3.6v+40mvpp 10 100 1k 10k 100k 1m 10m psrr c out = 0.47f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in(nom) + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr c out = 2.2f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) i out = 10ma i out = 200ma i out = 100ma v in = 3.6v + 40mvpp 10 100 1k 10k 100k 1m 10m psrr c out = 2.2f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in(nom) + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr c out = 1f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in(nom) + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr c out = 4.7f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) i out = 10ma i out = 200ma i out = 100ma v in = 3.6v+40mvpp 10 100 1k 10k 100k 1m 10m psrr c out = 4.7f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr c out = 10f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) i out = 10ma i out = 200ma i out = 100ma v in = 3.6v + 40mvpp 10 100 1k 10k 100k 1m 10m
micrel, inc. MIC94300 february 2012 6 m9999-020312-a typical characteristics (continued) output voltage vs. output current 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 0 20 40 60 80 100 120 140 160 180 200 output current (ma) output voltage (v) v in = 2.0v c in = c out = 1f output voltage vs. output current 3.30 3.35 3.40 3.45 3.50 3.55 3.60 0 20 40 60 80 100 120 140 160 180 200 output current (ma) output voltage (v) v in = 3.6v c in = c out = 1f voltage drop vs. output current 165 170 175 180 185 190 195 0 25 50 75 100 125 150 175 200 output current (ma) voltage drop (mv) c in = c out = 1f ground current vs. output current 110 115 120 125 130 135 140 145 150 0 20 40 60 80 100 120 140 160 180 200 output current (ma) ground current ( a) v in = 3.6v c in = c out = 1 f ground current vs. input voltage 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 input voltage (v) ground current ( a) i out = 10ma i out = 100ma i out = 200ma c in = c out = 1 f psrr (varying c out ) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) c out = 10f c out = 4.7f c out = 2.2f v in = 3.6v + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr c out = 10f -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) v in = 3.6v v in = 1.8v v in = 2.5v v in = v in(nom) + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m psrr (varying c out ) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 1.e+07 frequency (hz) psrr (db) c out = 2.2f c out = 1f c out = 0.47f v in = 3.6v + 40mvpp load = 100ma 10 100 1k 10k 100k 1m 10m voltage drop vs. input voltage 165 170 175 180 185 190 195 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 input voltage (v) voltage drop (mv) c in = c out = 1f i out = 50ma i out = 100ma i out = 200ma
micrel, inc. MIC94300 february 2012 7 m9999-020312-a typical characteristics (continued) current limit vs. input voltage 200 225 250 275 300 325 350 375 400 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 input voltage (v) current limit (ma) c in = c out = 1 f output noise spectral density 0.01 0.1 1 10 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 1.e+06 frequency (hz) noise v/ hz v in = v en = 2.91v c in = c out = 1.0f noise (10hz to 100khz) = 98.5v rms 10 100 1k 10k 100k 1m
micrel, inc. MIC94300 february 2012 8 m9999-020312-a functional characteristics
micrel, inc. MIC94300 february 2012 9 m9999-020312-a application information the MIC94300 utilizes ripple blocker ? technology to integrate a load switch with a high-performance active filter. the MIC94300 includes a low-voltage logic enable pin, and is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. input capacitor the MIC94300 is a high-performance, high-bandwidth device. an input capacitor of 470nf is required from the input to ground 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 MIC94300 requires an out put capacitor of 0.47f or greater to maintain stability. for optimal ripple rejection performance a 1f capacitor is recommended. 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 optimized for a 1f 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 operat ing 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 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 the MIC94300 will remain stable with no load. this is especially important in cmos ram keep-alive applications. enable/shutdown the MIC94300 comes with an active-high enable pin that allows the ripple blocker ? to be disabled. forcing the enable pin low disables the MIC94300 and sends it into a ?zero? off mode current st ate. in this state, current consumed by the MIC94300 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 floating; a floating enable pin may cause an indeterminate state on the output. thermal considerations the MIC94300 is designed to provide 200ma 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 which is fixed at 170mv typical, 250mv worst case. for example if the input vo ltage is 2.75v, the output voltage is 2.5v, and the output current = 200ma. the actual power dissipation of the ripple blocker? can be determined using the equation: p d = (v in ? v out1 ) i out + v in i gnd 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 this calculation: p d = (2.75v ? 2.5v) 200ma p d = 0.05w to determine the maximum ambient operating temperature of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: p d(max) = ? ? ? ? ? ? ? ? ? ja a j(max) tt t j(max) = 125c, the maximum junction temperature of the die, ja thermal resistance = 250c/w for the ycs package and 173c/w for the ymt package.
micrel, inc. MIC94300 february 2012 10 m9999-020312-a substituting p d for p d(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. the maximum power dissipation must not be exceeded for proper operation. for example, when operating the MIC94300ymt at an input voltage of 2.75v and 200ma load with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.05w = (125 c ? t a )/(173 c/w) t a = 116 c therefore the maximum ambient operating temperature of 116c is allowed in a 1.2mm x 1.6mm mlf ? 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 for more information about micrel?s ripple blocker ? products, go to: http://www.micrel.com/rippleblocker/ http://www.micrel.com/page.do?page=/product- info/products/MIC94300.jsp http://www.micrel.com/page.do?page=/product- info/products/mic94310.jsp
micrel, inc. MIC94300 february 2012 11 m9999-020312-a evaluation board schematic bill of materials item part number manufacturer description qty. c1, c2 grm155r61a105ke15d murata (1) capacitor, 1f ceramic, 10v, x7r, size 0402 2 u1 MIC94300ycs micrel, inc. (2) 200ma ripple blocker ? voltage follower 1 no tes: 1. murata tel: www.murata.com . 2. micrel, inc.: www.micrel.com .
micrel, inc. MIC94300 february 2012 12 m9999-020312-a package information 1 4-ball 0.88mm 0.88mm wl-csp (cs) n ote: 1. package information is correct as of the publication date. for updates and most current information, go to www.micrel.com .
micrel, inc. MIC94300 february 2012 13 m9999-020312-a package information 1 (continued) 4-pin 1.2mm 1.6mm thin mlf ? (mt) 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 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 authori zed for use as components in life support app liances, devices or systems where malfu nction of a product reasonably be expected to result in pers onal injury. life support devices or system s are devices or systems that (a) are in tended 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 significan t 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 resulting from such use or sale. can nt ? 2012 micrel, incorporated.

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