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mic5374/84 triple 200ma cap ldo and 1ma rtc ldo in 2.5mm x 2.5mm thin mlf ? 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 july 2010 m9999-070110 general description the mic5374/84 is a four output device with three 200ma ldos and a real time clock (rtc) 1ma ldo which is ideal for application processor support in mobile platforms. the mic5374 provides independent control active high enables for each of the 200ma ldos with an additional always-on rtc ldo. the mic5384 provides active low enables. both the mic5374 and mic5384 are available in the tiny 2.5mm x 2.5mm thin mlf ? package. the mic5374/84 is designed for high input ripple rejection (high psrr) and provides low output noise making it ideal for powering sensitive rf circuitry such as gps, wifi and bluetooth applications. the mic5374/84 also incorporates a power-on-reset (por) supervisor with adjustable delay time set by an external capacitor, and an independent input pin to monitor any voltage level. once high the por output can be asserted low again by enabling the manual reset (mr) pin. when the mr pin is restored low the por output will re-time the delay set by the external delay capacitor. the mic5374/84 operates with very small ceramic output capacitors to reduce board space and component cost. it is available in various fixed output voltages. the mic5374/84 has a junction temperature range from -40c to 125c. datasheets and support documentation can be found on micrel?s web site at: www.micrel.com. features ? 1.7v to 5.5v input supply voltage range ? output current - 200ma ldo1/2/3, 1ma ldo4 ? ldo4 ? ultra low 8a i bias for rtc support ? high output accuracy (2%) ? independent enable pins ? por with user-defined voltage monitoring - por voltage input - adjustable delay time - manual reset pin ? low dropout voltage ? 170mv at 150ma ? high psrr - 55db at 1khz on each ldo ? stable with tiny ceramic output capacitors ? 2.5mm x 2.5mm thin mlf ? 16-pin package ? thermal shutdown and current limit protection applications ? mobile phones ? gps receivers ? application co-processors ? pdas and handheld devices typical application bias inldo4 inldo1/ 2 inldo3 en1 en2 en3 mr out1 out2 out3 out4 por por_in dly mic5374 gnd 100k 1f 1f 1f 0.1f 1f 1f 1f 1f 150pf v monitor 10k v bias 10k 10k typical mic5374-xxxxymt circuit (active high enable) bias inldo4 inldo1/ 2 inldo3 mr out1 out2 out3 out4 por por_in dly mic5384 gnd 100k 1f 1f 1f 0.1f 1f 1f 1f 1f 150pf v monitor 10k v bias 10k 10k en 1 en 2 en 3 typical mic5384-xxxxymt circuit (active low enable)
micrel, inc. mic5374/84 july 2010 2 m9999-070110 ordering information part number mark code output voltage (1) junction temp. range package lead finish (2) MIC5374-SJG1YMT sjg1 3.3v/2.5v/1.8v/1.0v ?40 to +125c 16-pin 2.5mm x 2.5mm thin mlf ? pb-free mic5384-mg44ymt z1u 2.8v/1.8 v/1.2/1.2v ?40 to +125c 16- pin 2.5mm x 2.5mm thin mlf ? pb-free note: 1. other voltage options availabl e. contact micrel for details. 2. lead finish is nipdau. mold compound material is halogen free. pin configuration mic5374 16-pin 2.5mm x 2.5mm thin mlf ? (mt) (top view) mic5384 16-pin 2.5mm x 2.5mm thin mlf ? (mt) (top view)
micrel, inc. mic5374/84 july 2010 3 m9999-070110 pin description pin number pin name pin function 1 out1 regulator output - ldo1. 2 inldo1/2 supply input (ldo1/2). 3 out2 regulator output ? ldo2. 4 bias internal bias supply voltage. must be de-coupled to ground with a 0.1f capacitor. 5 por_in input to por. connect directly to output voltage or input voltage that is to be monitored for a 0.9v reference, or connect a resistor divider network to this pin to program the por monitoring voltage. 6 por power-on reset output. open drain. 7 dly por delay capacitor. connect capacitor to ground to set por delay time. 8 mr manual reset input. manually resets output of por and delay generator. do not leave floating. 9 out4 regulator output - ldo4. 10 inldo4 supply input (ldo4). ultra-low i q rtc ldo. 1.7v to 5.5v input voltage range. 11 inldo3 supply input (ldo3). 12 out3 regulator output ? ldo3. 13 gnd ground. 14 en3 or /en3 ldo3 enable input. en (mi c5374): active high input. log ic high = on; logic low = off; /en (mic5384): active low input. logic high = o ff; logic low = on; do not leave floating. 15 en2 or /en2 ldo2 enable input. en (mi c5374): active high input. log ic high = on; logic low = off; /en (mic5384): active low input. logic high = o ff; logic low = on; do not leave floating. 16 en1 or /en1 ldo1 enable input. en (mi c5374): active high input. log ic high = on; logic low = off; /en (mic5384): active low input. logic high = o ff; logic low = on; do not leave floating. hs pad epad exposed heat sink pad. connect to gnd.
micrel, inc. mic5374/84 july 2010 4 m9999-070110 absolute maximum ratings (1) supply voltage (v inldo1/2, inldo3, inldo4 ) ............. -0.3v to +6v bias supply voltage (v bias ).............................. -0.3v to +6v enable input voltage (v en1, en2, en3 ).................. -0.3v to +6v por output voltage (p or) ............................. -0.3v to +6v por input voltage (por _in) .......................... -0.3v to +6v mr voltage (mr) ............................................. -0.3 v to +6v dly voltage (dly) ........................................... -0.3v to +6v power dissipation .................................. in ternally limited (2) lead temperature (solde ring, 10 se c) ....................... 260c storage temperature (t s ) .........................?60c to +150c esd rating (3) ................................................. esd sensitive operating ratings (4) supply voltage (5) (v inldo1/2, inldo3, inldo4 ) ........ +1.7v to v bias bias supply voltage (v bias ).......................... +2.5v to +5.5v enable input voltage (v en1, en2, en3 )..................... 0v to v bias por output voltage (p or) .............................. 0v to +5.5v por input voltage (p or_in) ............................. 0v to v bias mr voltage (mr) ................................................ 0v to v bias dly voltage (dly ).............................................. 0v to v bias junction temperature (t j ) ........................ ?40c to +125c junction thermal resistance 2.5 x 2.5 thin mlf ? -16l ( ja )..........................100c/w electrical characteristics (6) (mic5374) v in = v out + 1v (v out is highest of the three regulator outputs); v bias = v en1 = v en2 = v en3 = 5.5v (on); (mic5384) v in = v out + 1v (v out is highest of the three regulator outputs); v bias = 5.5v; v /en1 = v /en2 = v /en3 = gnd (on); i out1 = i out2 = i out3 = i out4 = 100a; c out1 = c out2 = c out3 = c out4 =1f; t a = 25c, bold values indicate ?40c t j +125c, unless noted. parameter conditions min typ max units variation from nominal v out1, 2, 3 -2.0 +2.0 % output voltage accuracy (ldo1/2/3) variation from nominal v out1, 2, 3 -3.0 +3.0 % variation from nominal v out4 -4.0 +4.0 % output voltage accuracy (ldo4 - rtc support) variation from nominal v out4 -5.0 +5.0 % line regulation v in = v out +1v to 5.5v; i out = 100a 0.02 0.3 %/v i out = 100a to 150ma; ldo1/2/3 0.3 1 % load regulation i out = 100a to 1ma; ldo4 0.05 1 % i out = 50ma; v out 2.8v 60 115 mv i out = 150ma; v out 2.8v 170 330 mv i out = 50ma; v out < 2.8v 85 145 mv dropout voltage i out = 150ma; v out < 2.8v 275 450 mv en1 or en2 or en3 = on; not including i bias 10 20 a input ground current ldo4; en1 = en2 = en3 = off; not including i bias 3 8 a en1 or en2 or en3 = on; with ldo4 on 42 70 a input bias current en1 = en2 = en3 = on; with ldo4 on 106 170 a shutdown input ground current en1 = en2 = en3 = off 0.04 2 a shutdown bias current en1 = en2 = en3 = off; with ldo4 on 8 13 a ripple rejection f = 1khz; c out = 1.0f; 55 db v out = 0v; ldo1/2/3 200 350 700 ma current limit v out = 0v; ldo4 2 12 50 ma output voltage noise c out =1f,10hz to 100khz; i out = 150ma 200 v rms
micrel, inc. mic5374/84 july 2010 5 m9999-070110 electrical characteristics (continued) parameter conditions min typ max units (mic5374) ldo off; (mic5384) ldo on; 0.2 v enable input voltage (mic5374) ldo on; (mic5384) ldo off; 1.2 v vil < 0.2v 0.01 a enable input current vih > 1.2v 0.01 a turn-on time c out = 1f 80 200 s v por por output low voltage 0.2 v dly pin current source v dly = 0v 0.75 1.25 2 a dly pin voltage threshold 1.13 1.25 1.38 v i por por output leakage current, v por off 1 a v th por under voltage threshold 0.873 0.9 0.927 v v hys por voltage threshold hysteresis 34 mv i por_in por input pin leakage current 1 a thermal shutdown 155 c thermal shutdown hysteresis 10 c notes: 1. exceeding the absolute maxi mum rating may damage the device. 2. the maximum allowable power dissipation of any t a (ambient temperature) is p d(max) = (t j(max) ? t a ) / ja . exceeding the maximum allowable power dissipation will result in excessive die temperature and the regulator will go into thermal shutdown. 3. devices are esd sensitive. handling precautions recommended. human body model, 1.5k ? in series with 100pf. 4. the device is not guaranteed to function outside its operating rating. 5. for v in range of 1.7v to 2.5v, output current is limited to 30ma. 6. specification for packaged product only.
micrel, inc. mic5374/84 july 2010 6 m9999-070110 typical characteristics ldo1 output voltage vs. input voltage 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) v bias = v in1/2 v out_nom = 3.3v c out = 1.0f i out = 100a ldo1 output voltage vs. input voltage 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 2.533.544.555.5 input voltage (v) output voltage (v) i out = 50ma v bias = v in1/2 v out_nom = 3.3v c out = 1.0f ldo1 output voltage vs. input voltage 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 2.533.544.555.5 input voltage (v) output voltage (v) i out = 150ma v bias = v in1/2 v out_nom = 3.3v c out = 1.0f ldo2 output voltage vs. input voltage 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) v bias = v in v out_nom = 2.5v c out = 1.0f i out = 100a ldo2 output voltage v s. input voltage 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.533.544.555.5 input voltage (v) output voltage (v) i out = 50ma v bias = v in v out_nom = 2.5v c out = 1.0f ldo2 output voltage vs. input voltage 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) i out = 150ma v bias = v in v out_nom = 2.5v c out = 1.0f ldo3 output voltage vs. input voltage 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) output voltage (v) v bias = 5.5v v out_nom = 1.8v c out = 1.0f i out = 100 a ldo3 output voltage vs. input voltage 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) output voltage (v) v bias = 5.5v v out_nom = 1.8v c out = 1.0f i out = 50ma ldo3 output voltage vs. input voltage 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) output voltage (v) i out = 150m a v bias = 5.5v v out_nom = 1.8v c out = 1.0f ldo4 output voltage vs. input voltage 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) output voltage (v) v bias = 5.5v v out_nom = 1.0v c out = 1.0f i out = 100 a ldo4 output voltage vs. input voltage 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) output voltage (v) i out = 1m a v bias = 5.5v v out_nom = 1.0v c out = 1.0f ldo1 output voltage vs. output current 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 0 20 40 60 80 100 120 140 160 180 200 output current (ma) output voltage (v) v bias = v in1/2 v out_nom = 3.3v c out = 1.0f v in = 3.6v
micrel, inc. mic5374/84 july 2010 7 m9999-070110 typical characteristics (continued) ldo1 output voltage vs. output current 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 0 20 40 60 80 100 120 140 160 180 200 output current (ma) output voltage (v) v in = 4.2v v bias = v in1/2 v out_nom = 3.3v c out = 1.0f ldo1 output voltage vs. output current 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 0 20 40 60 80 100 120 140 160 180 200 output current (ma) output voltage (v) v in = 5.5v v bias = v in1/2 v out_nom = 3.3v c out = 1.0f ldo2 output voltage vs. output current 2.40 2.42 2.44 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 0 50 100 150 200 output current (ma) output voltage (v) v bias = v in1/2 v out_nom = 2.5v c out = 1.0f v in = 3.0v ldo2 output voltage vs. output current 2.40 2.42 2.44 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 0 50 100 150 200 output current (ma) output voltage (v) v in = 3.6v v bias = v in1/2 v out_nom = 2.5v c out = 1.0f ldo2 output voltage vs. output current 2.40 2.42 2.44 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 0 50 100 150 200 output current (ma) output voltage (v) v in = 5.5v v bias = v in1/2 v out_nom = 2.5v c out = 1.0f ldo3 output voltage vs. output current 1.70 1.72 1.74 1.76 1.78 1.80 1.82 1.84 1.86 1.88 1.90 0 50 100 150 200 output current (ma) output voltage (v) v bias = v in3 v out_nom = 1.8v c out = 1.0f v in = 2.5v ldo3 output voltage vs. output current 1.70 1.72 1.74 1.76 1.78 1.80 1.82 1.84 1.86 1.88 1.90 0 50 100 150 200 output current (ma) output voltage (v) v bias = v in3 v out_nom = 1.8v c out = 1.0f v in = 3.6v ldo3 output voltage vs. output current 1.70 1.72 1.74 1.76 1.78 1.80 1.82 1.84 1.86 1.88 1.90 0 50 100 150 200 output current (ma) output voltage (v) v in = 5.5v v bias = v in3 v out_nom = 1.8v c out = 1.0f ldo4 output voltage vs. output current 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 output current (ma) output voltage (v) v bias = 3.0v v out_nom = 1.0v c out = 1.0f v in = 1.7v ldo4 output voltage vs. output current 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 output current (ma) output voltage (v) v in = 3.0v v bias = 3.0v v out_nom = 1.0v c out = 1.0f ldo4 output voltage vs. output current 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 00.511.522.533.544.55 output current (ma) output voltage (v) v in = 5.5v v bias = 5.5v v out_nom = 1.0v c out = 1.0f ldo1 output voltage vs. temperature 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 -40 -20 0 20 40 60 80 100 120 temperature (c) output voltage (v) v out_nom = 3.3v c out = 1.0f i out = 100a i out = 50ma i out = 150 a
micrel, inc. mic5374/84 july 2010 8 m9999-070110 typical characteristics (continued) ldo2 output voltage vs. temperature 2.40 2.42 2.44 2.46 2.48 2.50 2.52 2.54 2.56 2.58 2.60 -40 -20 0 20 40 60 80 100 120 temperature (c) output voltage (v) v out_nom = 2.5v c out = 1.0f i out = 100a i out = 50ma i out = 150m a ldo3 output voltage vs. temperature 1.70 1.72 1.74 1.76 1.78 1.80 1.82 1.84 1.86 1.88 1.90 -40 -20 0 20 40 60 80 100 120 temperature (c) output voltage (v) v out_nom = 1.8v c out = 1.0f i out = 100a i out = 50ma i out = 150m a ldo4 output voltage vs. temperature 0.90 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 -40 -20 0 20 40 60 80 100 120 temperature (c) output voltage (v) v out_nom = 1.0v c out = 1.0f i out = 100a i out = 5ma ldo1 current limit vs. input voltage 0 50 100 150 200 250 300 350 400 450 500 550 600 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) current limit (ma) v bias = v in1/2 v out_nom = 3.3v c out = 1f ldo2 current limit vs. input voltage 0 50 100 150 200 250 300 350 400 450 500 550 600 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) current limit (ma) v bias = v in1/2 v out_nom = 2.5v c out = 1f ldo3 current limit vs. input voltage 0 50 100 150 200 250 300 350 400 450 500 550 600 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) current limit (ma) v bias = v in3 v out_nom = 1.8v c out = 1f ldo4 current limit v s. input voltage 0 5 10 15 20 25 30 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 input voltage (v) current limit (ma) v bias = 5.5v v out_nom = 1.0v c out = 1f ldo1/2/3 current limit vs. temperature 0 50 100 150 200 250 300 350 400 450 500 -40 -20 0 20 40 60 80 100 120 temperature (c) current limit (ma) v bias = v in = 4.3v v out_nom = 3.3v c out = 1f ldo4 current limit vs. temperature 0 5 10 15 20 25 30 35 40 -40 -20 0 20 40 60 80 100 120 temperature (c) current limit (ma) v bias = v in = 4.3v v out_nom = 1.0v c out = 1f ldo1 dropout voltage vs. temperature 0 20 40 60 80 100 120 140 160 180 200 -40 -20 0 20 40 60 80 100 120 temperature (c) dropout voltage (mv ) v bias = 4.3v v out_nom = 3.3v c out = 1f i out = 50ma i out = 150m a ldo2 dropout voltage vs. temperature 0 40 80 120 160 200 240 -40 -20 0 20 40 60 80 100 120 temperature (c) dropout voltage (mv ) v bias = 4.3v v out_nom = 2.5v c out = 1f i out = 50ma i out = 150m a ldo3 dropout voltage vs. temperature 0 40 80 120 160 200 240 280 320 -40 -20 0 20 40 60 80 100 120 temperature (c) dropout voltage (mv ) v bias = 4.3v v out_nom = 1.8v c out = 1f i out = 50ma i out = 150m a
micrel, inc. mic5374/84 july 2010 9 m9999-070110 typical characteristics (continued) ldo1/2/3 total ground current vs. output current 0 5 10 15 20 25 30 35 40 0 25 50 75 100 125 150 output current (ma) total ground current(a) v in = v bias = 3.6v en1 or en2 or en3 = on ldo4 total ground current vs. output current 0 2 4 6 8 10 12 14 16 18 20 012345678910 output current (ma) ground current (a) v bias = 2.5v, v in = 1.7v v bias = v in = 3.6v v bias = v in = 5.5v including i bias ldo1/2/3 total ground current vs. input voltage 0 5 10 15 20 25 30 35 40 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground current (a) v bias = v in1/2 = v in3 en1 or en2 or en3 = on including i bias no load ldo4 total ground current v s. input voltage 0 2 4 6 8 10 12 14 16 18 20 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground current (a) v bias = v in4 en1 = en2 = en3 = off including i bias no load ldo1/2/3 input ground current vs. output current 0 2 4 6 8 10 12 14 16 18 20 0 25 50 75 100 125 150 output current (ma) input ground current (a) v bias = 5.5v v in = v out + 1v en1 or en2 or en3= on ldo4 input ground current vs. output current 0 1 2 3 4 5 6 7 8 9 10 012345678910 output current (ma) input ground current (a) v bias = 5.5v v in = v out + 1v en1 = en2 = en3 = off ldo1/2/3 input ground current vs. input voltage 0 2 4 6 8 10 12 14 16 18 20 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground current (a) v bias = 5.5v en1 or en2 or en3 = on no load ldo4 input ground current vs. input voltage 0 1 2 3 4 5 6 7 8 9 10 2.533.544.555.5 input voltage (v) ground current (a) v bias = 5.5v en1 = en2 = en3 = off no load ldo1/2/3 input ground current vs. temperature 0 2 4 6 8 10 12 14 16 18 20 -40 -20 0 20 40 60 80 100 120 temperature (c) input ground current (a) v bias = 5.5v en1 or en2 or en3 = on no load ldo4 input ground current vs. temperature 0 1 1 2 2 3 3 4 4 5 5 -40 -20 0 20 40 60 80 100 120 temperature (c) input ground current (a) v bias = 5.5v en1 = en2 = en3 = off no load ldo1/2/3 bias ground current vs. output current 0 5 10 15 20 25 30 35 40 45 50 0 20 40 60 80 100 120 140 160 180 200 output current (ma) bias ground current (a ) v bias = 5.5v v in = v out + 1v en1 or en2 or en3= on ldo4 bias ground current vs. output current 0 2 4 6 8 10 12 14 16 18 20 012345678910 output current (ma) bias ground current (a ) v bias = 5.5v v in = v out + 1v en1 = en2 = en3 = off
micrel, inc. mic5374/84 july 2010 10 m9999-070110 typical characteristics (continued) ldo1/2/3 bias ground current vs. temperature 0 5 10 15 20 25 30 35 40 45 50 -40 -20 0 20 40 60 80 100 120 temperature (c) bias ground current (a ) v bias = 5.5v v in = v out + 1v en1 or en2 or en3= on ldo4 bias ground current vs. temperature 0 2 4 6 8 10 12 14 16 18 20 -40 -20 0 20 40 60 80 100 120 temperature (c) bias ground current (a ) v bias = 5.5v v in = v out + 1v en1 = en2 = en3 = off ldo1 output noise spectral density 0.001 0.01 0.1 1 10 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in = 3.8v v out = 2.8v c out = 1f c bias = 0.1f load = 150ma noise (10hz- 100khz) = 200vrms ldo2 output noise spectral density 0.01 0.1 1 10 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in = 4.0v v out = 1.8v c out = 1f c bias = 0.1f load = 100a noise (10hz - 100khz) = 160vrms ldo2 output noise spectral density 0.01 0.1 1 10 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in = 4.0v v out = 1.8v c out = 1f c bias = 0.1f load = 150ma noise (10hz - 100khz) = 144vrms ldo3 output noise spectral density 0.001 0.01 0.1 1 10 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in = 4.3v v out = 1.2v c out = 1f c bias = 0.1f load = 100a noise (10hz - 100khz) = 125vrms ldo3 output noise spectral density 0.001 0.01 0.1 1 10 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in = 3.9v v out = 1.2v c out =1f c bias = 0.1f load = 150ma noise (10hz - 100khz) = 105vrms ldo1 psrr (i out = 100a) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) psrr (db) ` v in = 4.3v v out = 3.3v c out = 1f ldo1 psrr (i out = 150ma) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) psrr (db) ` v in = 4.3v v out = 3.3v c out = 1f ldo2 psrr (i out = 100a) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) psrr (db) ` v in = 3.6v v out = 2.5v c out = 1 f ldo2 psrr (i out = 150ma) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) psrr (db) ` v in = 3.6v v out = 2.5v c out = 1f ldo3 psrr (i out = 100a) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency (hz) psrr(db) v in = 3.6v v out = 1.8v c out = 1f
micrel, inc. mic5374/84 july 2010 11 m9999-070110 typical characteristics (continued) ldo3 psrr (i out = 150ma) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) psrr (db) ` v in = 3.3v v out = 1.8v c out = 1 f
micrel, inc. mic5374/84 july 2010 12 m9999-070110 functional characteristics
micrel, inc. mic5374/84 july 2010 13 m9999-070110 functional characteristics (continued)
micrel, inc. mic5374/84 july 2010 14 m9999-070110 functional characteristics (continued)
micrel, inc. mic5374/84 july 2010 15 m9999-070110 functional diagram mic5374 ldo1 ldo2 ldo3 ldo4 reference por inldo1/2 en1 en2 inldo3 en3 inldo4 por_in gnd dly o u t1 o u t2 out3 o u t4 por mr bias mic5374 block diagram mic5384 ldo1 ldo2 ldo3 ldo4 reference por inldo1/2 en1 en2 inldo3 en3 inldo4 por_in gnd dly out1 o u t2 out3 out4 por mr bias mic5384 block diagram
micrel, inc. mic5374/84 july 2010 16 m9999-070110 pin descriptions inldo the ldo input pins inldo1/2, inldo3 and inldo4 provide the input power to the linear regulators ldo1, ldo2, ldo3 and ldo4. the input operating voltage range is from 1.7v to 5.5v. for input voltages from 1.7v to 2.5v the output current must be limited to 30ma each. due to line inductance a 1f capacitor placed close to the inldo pins and the gnd pin is recommended. please refer to layout recommendations. bias the bias pin provides power to the internal reference and control sections of the mic5374/84. a 0.1f ceramic capacitor must be connected from bias to gnd for clean operation. en (mic5374) the enable pins en1, en2 and en3 provide logic level control for the outputs out1, out2 and out3, respectively. a logic high signal on an enable pin activates the respective ldo. a logic low signal on an enable pin deactivates the respective ldo. do not leave the en pins floating, as it would leave the regulator in an unknown state. /en (mic5384) the enable pins /en1, /en2 and /en3 provide logic level control for the outputs out1, out2 and out3, respectively. a logic high signal on an enable pin deactivates the respective ldo. a logic low signal on an enable pin activates the respective ldo. do not leave the en pins floating, as it would leave the regulator in an unknown state. out out1, out2, out3 and out4 are the output pins of each ldo. a minimum of 1f capacitor be placed as close as possible to each of the out pins. a minimum voltage rating of 6.3v is recommended for each capacitor. gnd the gnd pin is the ground pat h for the control circuitry and the power ground for all ldos. the current loop for the ground should be kept as short as possible. refer to the layout recommendations for more details. por the por (power-on-reset) pin is an open drain output. a resistor (10k ? to 100k ? ) can be used for a pull up to either the input or the output voltage of the regulator. por is pulled high by the external pull up resistor when the voltage at dly reaches 1.25v. a delay can be added by placing a capacitor from the dly pin to ground. por_in the por_in (power-on-reset input) pin compares any voltage to an internal 0.9v reference. this function can be used to monitor any of the ldo outputs or any external voltage rail. when the monitored voltage is greater than 0.9v, the por_in flag will internally trigger a 1.25a source current to charge the external capacitor at the dly pin. a resistor divider network may be used to divide down the monitored voltage to be compared with the 0.9v at the por_in. this resistor network can change the trigger point to any voltage level. a small decoupling capacitor is recommended between por_in and ground to reject high frequency noise that might interfere with the por circuit. do not leave the por_in pin floating. dly the delay pin is used to set the por delay time. adding a capacitor to this pin adjusts the delay of the por signal. when the por_in flag is triggered, a constant 1.25a current begins to charge the external capacitor tied to the dly pin. when the capacitor reaches 1.25v the por flag will be pulled high by the external pull up resistor. the equation to calculate the charge time is shown: ? ? ? ? ? ? = ? 6 dly delay 10 25 . 1 c x 1.25v (s) t x the delay time (t) is in seconds, the delay voltage is 1.25v internally, and the external delay capacitance (c dly ) is in microfarads. for a 1f delay capacitor, the delay time will be 1 second. a capacitor at the dly pin is recommended when the por function is used in order to prevent unexpected triggering of the por signal in noisy systems. mr the mr (manual reset) pin resets the output of por and dly generator regardless if the monitored voltage is in regulation or not. applying a voltage greater than 1.2v on the mr pin will cause the por voltage to be pulled low. when a voltage below 0.2v is applied to the mr pin, the internal 1.25a will begin to charge the dly pin until it reaches 1.25v. when the dly pin reaches 1.25v, the por voltage will be pulled high by the external pull up resistor. do not leave the mr pin floating.
micrel, inc. mic5374/84 july 2010 17 m9999-070110 application information mic5374/84 is a four output device with three 200ma ldos and a 1ma rtc ldo. the mic5374/84 incorporates a por functi on with the capability to monitor any voltage using por_in. the monitored voltage can be set to any voltage threshold level to trigger the por flag. a delay on the por flag may also be set with an external capacitor at the dly pin. all the ldos have current limit and thermal shutdown protection to prevent damage from fault conditions. mic5374 has active high enables while the mic5384 has active low enables. rtc ldo ldo4 is an always-on rtc ldo used for application processor support and can provide 1ma of output current. power must be provided to the inldo4 and bias pins to keep ldo4 enabled. input capacitor the mic5374/84 is a high performance, high bandwidth device. an input capacitor of 1f from the input pin to ground is required to provi de stability. low esr ceramic capacitors provide optimal performance in small board area. 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 mic5374/84 requires an output capacitor of 1f or greater to maintain stability. the design is optimized for use with low esr ceramic chip capacitors. high esr capacitors 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 and x5r dielectric ceramic capacitors are recommended because of their temperature performance. x7r 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 t heir 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 equiva lent operating temperature range. no load stability unlike many other voltage regulators, the mic5374/84 will remain stable and in regulation with no load. thermal considerations the mic5374/84 is designed to provide three outputs up to 200ma each 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 voltages are 3.6v and the output voltages are 3.3v, 2.5v, and 1.8v each with an output current = 150ma. the actual power dissipation of the regulator circuit can be determined using the equation: p d = (v inldo1/2 ? v out1 ) i out1 + (v inldo1/2 ? v out2 ) i out2 + (v inldo3 ? v out3 ) i out3 + (v inldo4 ? v out4 ) i out4 + v in x i gnd as the mic5374/84 is a cmos device, the ground current is typically <100a over the load range, the power dissipation contributed by t he ground current is < 1% and may be ignored for this calculation. since ldo4 only supplies 1ma of current, it can also be ignored for this calculation. p d (3.6v ? 3.3v)150ma+(3.6v-2.5v)150ma+ (3.6v-1.8v)150ma p d 0.48w 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: ? ? ? ? ? ? ? ? ? = ja a j(max) d(max) t t p t j(max) = 125c ja = 100c/w 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 MIC5374-SJG1YMT at an input voltage of 3.6v and 150ma load on ldo1, ldo2 and ldo3 with a minimum layout footprint, the maximum ambient operating temperature t a can be determined as follows: 0.48w = (125c ? t a ) / (100c/w) t a = 77c therefore the maximum ambient operating temperature of 77c is allowed in a 2.5mm x 2.5mm thin mlf ? package for the voltage options specified and at the maximum load of 150ma on each output. for a full
micrel, inc. mic5374/84 july 2010 18 m9999-070110 discussion of heat sinking and thermal effects on voltage regulators, refer to the ?regul ator 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. mic5374/84 july 2010 19 m9999-070110 typical circuit (mic5374-xxxxymt) bias inldo4 inldo1/ 2 inldo3 en 1 en 2 en 3 mr out1 out2 out3 out4 por por_in dly u1 mic5374-xxxxymt gnd r4 100k c4 1f c3 1f c2 1f c1 0.1f c7 1f c6 1f c5 1f c8 1f c10 150pf r10 10k v bias v monitor r6 r5 c9 bill of materials item part number manufacturer description qty. c1 c1005x5r1a104k tdk (1) capacitor, 0.1f ceramic, 10v, x5r, size 0402 1 c2, c3, c4, c5, c6, c7, c8 c1005x5r1a105k tdk capacitor, 1f ceramic, 10v, x5r, size 0402 7 c9 optional 1 c10 c1005c0g1h151j tdk capacitor, 150pf cermaic, 50v, c0g, size 0402 1 r4 crcw0402100kfked vishay (2) 100k ? , 1%, 0402 1 r5, r6 optional vishay optional 2 r10 crcw040210kfked vishay 10k ? , 1%, 0402 1 u1 mic5374-xxxxymt micrel, inc. (3) high performance active high enable triple 200ma ldo with 1ma rtc ldo 1 notes: 1. tdk: www.tdk.com 2. vishay: www.vishay.com 3. micrel, inc.: www.micrel.com
micrel, inc. mic5374/84 july 2010 20 m9999-070110 typical circuit (mic5384-xxxxymt) bias inldo4 inldo1/ 2 inldo3 en 1 en 2 en 3 mr out1 out2 out3 out4 por por_in dly u1 mic5384-xxxxymt gnd r4 100k c4 1f c3 1f c2 1f c1 0.1f c7 1f c6 1f c5 1f c8 1f c10 150pf r10 10k v bias v monitor r6 r5 c9 bill of materials item part number manufacturer description qty. c1 c1005x5r1a104k tdk (1) capacitor, 0.1f ceramic, 10v, x5r, size 0402 1 c2, c3, c4, c5, c6, c7, c8 c1005x5r1a105k tdk capacitor, 1f ceramic, 10v, x5r, size 0402 7 c9 optional 1 c10 c1005c0g1h151j tdk capacitor, 150pf cermaic, 50v, c0g, size 0402 1 r4 crcw0402100kfked vishay (2) 100k ? , 1%, 0402 1 r5, r6 optional vishay optional 2 r10 crcw040210kfked vishay 10k ? , 1%, 0402 1 u1 mic5384-xxxxymt micrel, inc. (3) high performance active low enable triple 200ma ldo with 1ma rtc ldo 1 notes: 1. tdk: www.tdk.com 2. vishay: www.vishay.com 3. micrel, inc.: www.micrel.com
micrel, inc. mic5374/84 july 2010 21 m9999-070110 pcb layout recommendations recommended top layout recommended bottom layout
micrel, inc. mic5374/84 july 2010 22 m9999-070110 package information 16-pin 2.5mm x 2.5mm 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 the information furnished by micrel in this data sheet is belie ved to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. 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 can 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 implant 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. ? 2010 micrel, incorporated.

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