View MIC2039FYM6-TR_8812173.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

mic2039 high - accuracy, high - side, adjustable current limit power switch general description the mic2039 is a high - side mosfet power distribution switch providing increased system reliability by using 5% current - limit accuracy. the mic2039 has an operating input voltage range from 2.5v to 5.5v, is internally current limited, and has thermal shutdown to protect the device and system. the mic2039 is offered with either active - high or active - low logic level enable input controls. it has an open drain fault status output flag with a built - in 32ms delay that asserts low during overcurrent or thermal - shutdown conditions. the mic2039 switches feature an adjustable output current limit that is resistor programmable from 0.2a to 2.5a. the mic2039 switch also offers a unique, kickstart feature that allows momentary high - current surges up t o the secondary current limit (i limit_2nd ) during startup or while operating in steady state. this is useful for charging loads with high inrush currents, such as capacitors. after an overcurrent condition is established, these switches enter into a consta nt current - limit mode unless the die temperature exceeds the thermal - shutdown specification. the mic2039 is available in 6 - pin sot - 23 and 6 - pin 2mm 2mm thin dfn packages. the mic2039 has an operating junction temperature range of ? 40 c to +125 c. data sheets and support documentation are available on micrels web site at : www.micrel.com . features ? 5% current limit accuracy ? input supply range from 2.5v to 5.5v ? low quiescent current: 100a typical (switch on) ? 75m? typical r ds(on) at 5.0v ? 0.2a to 2.5a adjustable output current ? kickstart ? momentary secondary current - limit threshold (120ms period) ? soft - start functionality ? undervoltage lockout (uvlo) ? fast 10s short - circuit response time (non - kickstart options) ? fa ult status output flag ? logic - controlled enable (active - high, active - low) ? thermal shutdown ? pin compatible with the mic2009/mic2019 ? 6- pin 2mm 2mm thin dfn and 6 - pin sot - 23 packages ? junction temperature range from ? 40c to +125c applications ? usb peripherals and usb 2.0/3.0 compatible ? dtv/stb ? notebooks and consumer electronics ? general - purpose power distribution typical application micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www .micrel.com december 8 , 2014 revision 1.3 downloaded from: http:///
micrel, inc. mic2039 ordering information part number top mar k ( 1 ) current limit enable kickstar t package mic2039aym6 39a a adjustable active high no sot - 23 - 6l mic2039bym6 39b b adjustable active low no sot - 23 - 6l mic2039aymt 3a9 adjustable active high no 6- pin 2mm x 2mm thin dfn ( 2 ) mic2039bymt b39 adjustable active low no 6- pin 2mm x 2mm thin dfn ( 2 ) mic2039eym6 39a e adjustable active high yes sot - 23 - 6l mic2039fym6 39a f adjustable active low yes sot - 23 - 6l mic2039eymt d39 adjustable active high yes 6- pin 2mm x 2mm thin dfn ( 2 ) mic2039fymt f39 adjustable active low yes 6- pin 2mm x 2mm thin dfn ( 2 ) note: 1. under-bar symbol ( _ ) may not be to scale. 2. thin dfn is a green rohs-compliant package. lead finish is nipdau. mold compound is halogen free. pin configuration sot- 23 6 - pin (m6) top view 2mm x 2mm 6 - pin thin dfn (mt) ( 3 ) ( top view ) notes: 3. thin dfn = pin 1 identifier. december 8 , 2014 2 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 pin description pin number pin name pin fu n ction sot- 23 - 6l 6-pin 2mm x 2mm thin dfn 1 6 vin input: power switch and logic supply input. 2 5 gnd ground: input and output return pin. 3 4 en enable (input): logic compatible, enable control input that allows switch turn - on/off. do not leave the en pin floating. 4 3 fault/ fault status flag (output): active - low, open - drain output. a logic low state indicates an overcurrent or thermal shutdown condition. an overcurrent c ondition must last longer than t fault / to assert fault/. a pull - up resistor ( 10k recommended) to an external supply is required. 5 2 ilimit current limit set: current limit adjust setting. connect a resistor from this pin to gnd to set the current limit, but do not leave the ilimit pin floating. 6 1 vout switch output: power switch output. ep epad exposed pad: exposed pad on bottom of package. connect to electrical ground for optimum thermal dissipation. december 8 , 2014 3 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 absolute maximum ratings ( 4 ) v in to gnd ................................................... .... ? 0.3v to +6v v out to gnd ................................................... . ? 0. 3v to +6v v ilimit to gnd .................................................. ? 0.3v to +6v v en to gnd ................................................... ... ? 0.3v to +6v v fault/ to gnd ................................................. ? 0.3v to +6v fault/ current (i fault/ ) .............................................. 25ma maximum power dissipation (p d ) ............. internally limited lead temperature (soldering, 10 s) ............................ 260c storage temperature (t s ) ......................... ? 65c to +150 c esd r ating ( 6 ) hbm ................................................... ...................... 3kv mm ................................................... ...................... 300v operating ratings ( 5 ) supply voltage (v in ) ..................................... +2.5v to +5.5v v en , v fault/ ................................................... ? 0.3v to +5.5v v ilimit , v out ................................................... ..... ? 0.3v to v in junction temperature (t j ) ........................ C 40c to +125c package thermal resistance sot - 23 - 6 ( ja ) .............................................. 177.2c/w 6- pin 2mm 2mm thin dfn ( ja ) ..................... 90c/w electrical characteristics ( 7 ) v in = v en = 5v ; c in = 1f ; t j = 25c . b old values indicate C 40c t a +85c, unless noted. symbol parameter condition m in . typ . max . units power supply input v in input voltage range 2.5 5.5 v v uvlo input supply undervoltage lockout threshold v in rising 2.0 2.25 2.5 v v in falling 1.9 2.15 2.4 v v uvlohys input supply undervoltage lockout threshold hysteresis v in r ising or v in falling 100 mv i dd supply current switch off (i out = 0a) active- high enable (a): v en = 0v, v in = 5 v 0.75 5 a active- low enable (b): v en = v in = 5 v switch on (i out = 0a) active- high enable (a): v en = 1.5v, v in = 5v 100 300 active- low enable (b): v en = 0v, v in = 5v power mosfet r ds(on) switch on resistance v in = 2.5v, i out = 350ma 100 177 m v in = 3.3v, i out = 350ma 85 145 v in = 5v, i out = 350ma 75 125 i lkg output leakage current switch off, v out = 0v 0.22 15 a notes: 4. exceeding the absolute maximum ratings may damage the device. 5. the device is not guaranteed to function outside its operating ratings. 6. devices are esd sensitive. handling precautions are recommended. human body model, 1.5k ? in series with 100pf. 7. specification for packaged product only december 8 , 2014 4 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 electrical characteristics ( 7 ) (continued) v in = v en = 5v; c in = 1 f; c out = 1 f t j = 25c. bold values indicate C 40c t j +125c, unless noted otherwise. sy mbol parameter condition min. typ. max. units current limit i limit current limit (resistor values are standard 0.1% values) r limit = 115 ?, v in = 5v , v out = 0.8 v v in 2.35 2.5 2.65 a r limit = 115 ?, v in = 2.5v , v out = 0v 2.6 2.85 3.1 r limit = 145 ? , v in = 5v , v out = 0.8 v v in 1.90 2.0 2.10 r limit = 287 ?, v in = 5v , v out = 0.8 v v in 0.95 1.0 1.05 r limit = 576 ?, v in = 5v , v out = 0.8 v v in 0.475 0.50 0.525 r limit = 1.45k ?, v in = 5v , v out = 0.8 v v in 0.19 0.20 0.21 i limit_2nd secondary current limit (kickstart parts only) v out = 0v 2.2 3.2 6 a i/o v en enable voltage logic low 0.5 v logic high 1.5 i en enable input current 0v v en 5v 1 a r fault/ fault/ output resistance i out = 10ma 25 i fault/_off fault/ off current v fault/ = v in 10 a thermal protection t sd thermal - shutdown threshold t j rising 157 c t sdhys thermal - shutdown hysteresis 15 c timing specifications (ac parameters) t rise output turn - on rise time ( 8 ) r load = 10 ; c out = 1 f 700 s t fall output turn - off fall time ( 8 ) v en = off; r load = 10 ; c out = 1 f 32 s t on_dly output turn - on delay ( 8 ) r load = 10 ; c out = 1 f 700 s t off_dly output turn - off delay ( 8 ) r load = 10 ; c out = 1 f 5 s t sc_resp short circuit response time ( 8 ) v out = 0v (short circuit) 10 s t fault/ overcurrent fa ult response delay time ( 8 ) non - kickstart parts 16 32 49 ms t kickstart overcurrent fault response delay during kickstart ( 8 ) kickstart parts only 64 120 200 ms note : 8. see timing diagrams (figures 1 through 4). december 8 , 2014 5 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 t iming diagrams figure 1 . output rise/fall time figure 2 . turn - on/off delay december 8 , 2014 6 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 timing di agrams (continued) figure 3 . short circuit response time and overcurrent fault flag de lay (non - kickstart) figure 4 . overcurrent fault flag delay (kickstart) december 8 , 2014 7 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 typical characteristics input supply current vs. temperature 0 25 50 75 100 125 150 175 200 -50 -25 0 25 50 75 100 125 temperature (c) supply current (a) v in = 5v i ou t = 0ma vin off current vs. temperature 0.00 0.25 0.50 0.75 1.00 1.25 1.50 -50 -25 0 25 50 75 100 125 temperature (c) supply off current (a) v in = 5v v en = off i ou t = 0ma undervoltage lockout 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) v in falling v in rising r ds(on) vs. temperature 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 temperature (c) r ds(on) (m) v in = 5v i out = 350ma r ds(on) vs. output current 0 25 50 75 100 125 0.0 0.5 1.0 1.5 2.0 2.5 output current (a) r ds(on) (m) v in = 5v t a = 25c r ds(on) vs. output current 0 25 50 75 100 125 0.0 0.5 1.0 1.5 2.0 2.5 output current (a) r ds(on) (m) v in = 3.3v t a = 25c 0 10 20 30 40 50 -50 -25 0 25 50 75 100 125 fault/ response time (ms) temperature ( c) fault/ response time vs. temperature v in = 5v i limit = 1a non - kickstart 0 50 100 150 200 250 -50 -25 0 25 50 75 100 125 fault/ response time (ms) temperature ( c) fault/ response time vs. temperature v in = 5v i limit = 1a kickstart 0 50 100 150 200 250 0.0 0.5 1.0 1.5 2.0 2.5 fault/ response time (ms) output current (a) fault/ response time vs. output current v in = 5v t a = 25 c kickstart december 8 , 2014 8 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 typical characteristics (continued) output leakage current vs. temperature 0 1 2 3 4 5 -50 -25 0 25 50 75 100 125 temperature (c) output leakage (a) v in = 5v v en = off i ou t = 0ma vin - vout vs. output current 0 50 100 150 200 250 0.0 0.5 1.0 1.5 2.0 2.5 output current (a) vin - vout (mv) v in = 5v t a = 25c current limit set resistor vs. output current 0 250 500 750 1000 1250 1500 0.0 0.5 1.0 1.5 2.0 2.5 output current (a) r set () v in = 5v t a = 25c december 8 , 2014 9 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 functional characteristics december 8 , 2014 10 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 functional characteristics (continued) december 8 , 2014 11 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 functional characteristics (continued) december 8 , 2014 12 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 functional diagram figure 5 . mic2039 block diagram december 8 , 2014 13 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 functional description the mic2039 is a high - side mosfet power - distribution sw itch that provides increased system reliability by using 5% current limit accuracy. the mic2039 is internally current limited and has thermal shutdown, which protects the device and system. the mic2039 has a soft - start circuit that minimizes in - rush curren t by slowing the turn - on time. additionally, the mic2039 has an optional kickstart feature, which momentarily overrides the normal current - limiting function to allow higher inrush and/or transient currents. soft - start soft - start reduces the power - supply in put surge current at startup by controlling the output voltage rise time. the input surge appears while the output capacitor is charged up. a slower output rise time draws a lower input surge current. kickstart inrush overcurrent filter the mic2039eyxx and mic2039fyxx are equipped with a secondary current limit that allows high inrush current transients to pass for a set period before the primary current - limit circuitry becomes active. the fault/ status flag does not assert during the kickstart period (ty pically 120ms), which eliminates any false (fault/) assertions. the kickstart function is active during initial startup or while operating in steady state. input capacitor micrel recommends a 1 f to 10 f ceramic input capacitor f or most applications. place the input capacitor on the same side of the board and next to the mic2039 to minimize the voltage ringing during transient and short - circuit conditions. using two vias for each end of the capacitor to connect to the power and ground plane is also rec ommended. micrel recommends x7r or x5r dielectric ceramic capacitors 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 temperature ranges. to use a ceramic chip capacitor with y5v dielectric, the value must be much higher than an x7r ceramic or a tantalum capacitor to ensur e the same capacitance value over the operating temperature range. output capacitor the output capacitor type and placement criteria are the same as for the input capacitor. see the input capacitor section for a detailed description . enable the mic2039 offers either an active - high or active - low enable input (en) that allows on/off control of the switch output. the current through the device reduces to near zero when the device is shut down, with only microamperes of leakage current. the en input can b e directly tied to vin or driven by a voltage that is equal to or less than vin; do not leave this pin floating. adjustable current limit the mic2039 current limit is adjustable from 0.2a to 2.5a by connecting a resistor from the ilimit pin to gnd. the following equation determines the resistor: limit i limit r / 289 ? eq. 1 where i limit is the typical current limit from the electrical table. if the output current exceeds the set current limit, the mic2039 switch enters constan t current limit mode. the maximum allowable current limit can be less than the full specified and/or expected current if the mic2039 is not mounted on a circuit board with sufficiently low thermal resistance. table 1 shows resistor values (1%) for select c urrent limit settings. table 1 . resistor selection for adjustable current limit i limit 0.2a 0.5a 1.0a 2a 2.5a r limit 1.45k 576 287 145 115 december 8 , 2014 14 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 high current limit application considerations for higher current applications, a rob ust circuit design is necessary to avoid part failure du e to large voltage and/or current swings. when dealing with fast ac transients at higher current limits, the use of a local bypass capacit or is critical in order to maintain a stable input supply. for proper operation, m inimizing stray and/or parasitic inductance from the supply to vin (of ic) and vout (of ic) to the actual load can be achieved through a compact circuit design. table 2 below lists the recommend ed input/output capacitors for the higher dc current limit settings : table 2 . recommended c in /c out vs i limit *these recommended values are for wire/traces less than 3 inches from the supply to the input and from the output to the load. for lengthy connections (>6 inches), use a 4.7 f ( i limit = 1a) and 22 f (i limit > 2a) input capacitor. thermal design to help reduce the thermal resistance, the epad (underneath the ic) should be soldered to the pcb ground. the placement of thermal vias either underneath or near the epad is highly recommended. thermal design requires the following application - speci?c parameters: ? maximum ambient temperature (t a ) ? output current (i out ) ? input voltage (v in ) ? current limit (i limit ) when the mic2039 is in constant current limit mode, it may exceed the overtemperature threshold. if this occurs, the overtemperature condition will shut down the mic2039 switch and the fault status flag will go active (assert low). after the switch cools down, it automatically turns on again. the user can maximize the mic2039 powe r dissipation by either lowering the thermal resistance on the exposed pad (only the dfn package has an exposed pad) on the printed circuit board, or by limiting the maximum allowable ambient temperature. thermal measurements it is always wise to measure the ics case temperature to make sure that it is within its operating limits. although this might seem like an elementary task, it is very easy to get false results. the most common mistake is to use the standard thermal couple that comes with the thermal voltage meter. this thermal 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 thermomet er. 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 contact to the case of the ic. thermal couple 5sc - tt -k- 36 - 36 from omega is adequate for most applications. to avoid using messy thermal couple grease or glue, an infrared thermometer is recommended. most infrared thermometers spot s ize 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 2mm 2mm thin dfn package. also, get the optional stand. the stand makes it easy to hold the beam on the ic for long periods of time. i limit *c in c out 1a 1f 10f 2a 10f 47f 2.5a 10f 47f december 8 , 2014 15 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 evaluation board schematic bill of materials item part number manufacturer description qty. c1, c2 c1608x5r0j105k tdk ( 9 ) 1f/6.3v ceramic capacitor, x5r, 0603 2 06036d105kat2a avx ( 10 ) r1, r2 crcw060310k0fkea vishay/dale ( 11 ) 10k, film resistor, 0603, 1% 2 r3 crcw06032870fkea vishay/dale 287 film resistor, 0603, 1% 1 u1 mic2039xymt micrel ( 12 ) high - accuracy, high - side, adjustable current - limit power switch 1 notes: 9. tdk: www.tdk.com . 10. avx.: www.avx.com . 11. vishay: www.vishay.com . 12. micrel, inc.: www.micrel.com . december 8 , 2014 16 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 pcb layout (mic2039xymt evaluation board) mic2039xymt evaluation board C top layer mic2039xymt evaluation board C bottom layer december 8 , 2014 17 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 pcb layout (mic2039xym6 evaluation board) mic2039xym6 evaluation board C top layer mic2039xym6 evaluation board C bottom layer december 8 , 2014 18 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 package informatio n and recommended landing patter n (13) 6- pin 2mm x 2mm thin dfn (mt) note: 13. package information is correct as of the publication date. for updates and most current information, go to www.micrel.com . december 8 , 2014 19 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 package information and recommended landing pattern (13) (continued) sot23 - 6l (m6) december 8 , 2014 20 revision 1 .3 downloaded from: http:///
micrel, inc. mic2039 micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474 - 1000 web http://w ww.micrel.com micrel, inc. is a leading global manufacturer of ic solutions for the worldwide high performance linear and power, lan, and timing & communications markets. the companys products include advanced mixed - signal, analog & power semiconductors; high - performance communication, clock management, mems - based clock oscillators & crystal - less clock generators, ethernet switches, and physical layer transceiver ics. company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunic ations, automotive, and computer products. corporation headquarters and state -of-the- art wafer fabrication facilities are located in san jose, ca, with regional sales and support offices and advanced technology design centers situated t hroughout the americas, europe, and asia. additionally, the company maintains an extensive network of distributors and reps worldwide. micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. 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 expre ss, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in micrels 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 pr oducts including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectua l property right. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfuncti on of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or sys tems 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 injur y to the user. a purchasers use or sale of micrel products for use in life support appliances, devices or systems is a purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2014 micrel, incorporated. december 8 , 2014 21 revision 1 .3 downloaded from: http:///

▲Up To Search▲

Price & Availability of MIC2039FYM6-TR

	To Download MIC2039FYM6-TR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .