february 2009 1 mic5203 mic5203 micrel, inc. general description the mic5203 is a cap 80ma linear voltage regulator with very low dropout voltage (typically 20mv at light loads and 300mv at 80ma) and very low ground current (225a at 20ma output), offering better than 3% initial accuracy with a logic-compatible enable input. the cap regulator design is optimized to work with low-value, low-cost ceramic capacitors. the outputs typically require only 0.47f of output capacitance for stability. designed especially for hand-held, battery-powered devices, the mic5203 can be controlled by a cmos or ttl compat - ible logic signal. when disabled, power consumption drops nearly to zero. if on-off control is not required, the enable pin may be tied to the input for 3-terminal operation. the ground current of the mic5203 increases only slightly in dropout, further prolonging battery life. key mic5203 features include current limiting, overtemperature shutdown, and protection against reversed battery. the mic5203 is available in 2.8v, 3.0v, 3.3v, 3.6v, 3.8v, 4.0v, 4.5v, 4.75v, and 5.0v fxed voltages. other voltages are available; contact micrel for details. typical applications enable shutdow n laxx v out 0.47f sot-143 version features ? tiny 4-lead and 5-lead surface-mount packages ? wide selection of output voltages ? guaranteed 80ma output ? low quiescent current ? low dropout voltage ? tight load and line regulation ? low temperature coeffcient ? current and thermal limiting ? reversed input polarity protection ? zero off-mode current ? logic-controlled shutdown ? stability with low-esr ceramic capacitors applications ? cellular telephones ? laptop, notebook, and palmtop computers ? battery-powered equipment ? bar code scanners ? smps post-regulator/dc-to-dc modules ? high-effciency linear power supplies mic5203 cap 80ma low-dropout regulator micrel, inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com 15 2 34 0.47f v out enable shutdow n sot-23-5 version
mic5203 2 february 2009 mic5203 micrel, inc. pin confguration gnd out in en laxx part identification 1 2 34 sot-143 (m4) pin description pin number pin number pin name pin function sot-143 sot-23-5 1 2 gnd ground 2 3 en enable (input): ttl/cmos compatible control input. logic high = enabled; logic low or open = shutdown. 3 1 in supply input 4 nc not internally connected. 4 5 out regulator output ordering information part number voltage temperature range package standard marking pb-free marking mic5203-2.6bm4 la26 mic5203-2.6ym4 la26 2.6v -40oc to +125oc sot-143 mic5203-2.8bm4 la28 mic5203-2.8ym4 la28 2.8v -40oc to +125oc sot-143 mic5203-3.0bm4 la30 mic5203-3.0ym4 la30 3.0v -40oc to +125oc sot-143 mic5203-3.3bm4 la33 mic5203-3.3ym4 la33 3.3v -40oc to +125oc sot-143 mic5203-3.6bm4 la36 mic5203-3.6ym4 la36 3.6v -40oc to +125oc sot-143 mic5203-3.8bm4 la38 mic5203-3.8ym4 la38 3.8v -40oc to +125oc sot-143 mic5203-4.0bm4 la40 mic5203-4.0ym4 la40 4.0v -40oc to +125oc sot-143 mic5203-4.5bm4 la45 mic5203-4.5ym4 la45 4.5v -40oc to +125oc sot-143 mic5203-4.7bm4 la47 mic5203-4.7ym4 la47 4.75v -40oc to +125oc sot-143 mic5203-5.0bm4 la50 mic5203-5.0ym4 la50 5.0v -40oc to +125oc sot-143 mic5203-2.6bm5 lk26 mic5203-2.6ym5 lk26 2.6v -40oc to +125oc sot-23-5 mic5203-2.8bm5 lk28 mic5203-2.8ym5 lk28 2.8v -40oc to +125oc sot-23-5 mic5203-3.0bm5 lk30 mic5203-3.0ym5 lk30 3.0v -40oc to +125oc sot-23-5 mic5203-3.3bm5 lk33 mic5203-3.3ym5 lk33 3.3v -40oc to +125oc sot-23-5 mic5203-3.6bm5 lk36 mic5203-3.6ym5 lk36 3.6v -40oc to +125oc sot-23-5 mic5203-3.8bm5 lk38 mic5203-3.8ym5 lk38 3.8v -40oc to +125oc sot-23-5 mic5203-4.0bm5 lk40 mic5203-4.0ym5 lk40 4.0v -40oc to +125oc sot-23-5 mic5203-4.5bm5 lk45 mic5203-4.5ym5 lk45 4.5v -40oc to +125oc sot-23-5 mic5203-4.7bm5 lk47 mic5203-4.7ym5 lk47 4.7v -40oc to +125oc sot-23-5 mic5203-5.0bm5 lk50 mic5203-5.0ym5 lk50 5.0v -40oc to +125oc sot-23-5 other voltages available, please contact micrel marketing. in out nc en lkxx 1 3 45 2 gnd sot-23-5 (m5)
february 2009 3 mic5203 mic5203 micrel, inc. electrical characteristics v in = v out + 1v; i l = 1ma; c l = 0.47f; v en 2.0v; t j = 25c, bold values indicate C40c t j +125c; unless noted. symbol parameter conditions min typ max units v o output voltage accuracy C3 3 % C4 4 % v o /t output voltage temp. coeffcient note 4 50 200 pm/c v o /v o line regulation v in = v out + 1v to 16v 0.008 0.3 % 0.5 % v o /v o load regulation i l = 0.1ma to 80ma, note 5 0.08 0.3 % 0.5 % v in Cv o dropout voltage, note 6 i l = 100a 20 mv i l = 20ma 200 350 mv i l = 50ma 250 mv i l = 80ma 300 600 mv i q quiescent current v en 0.4v (shutdown) 0.01 10 a i gnd ground pin current, note 7 i l = 100a, v en 2.0v (active) 180 a i l = 20ma, v en 2.0v (active) 225 750 a i l = 50ma, v en 2.0v (active) 850 a i l = 80ma, v en 2.0v (active) 1800 3000 a i gnddo ground pin current at dropout v in = v out(nominal) C 0.5v, note 7 200 300 a i limit current limit v out = 0v 180 250 ma v o/ p d thermal regulation note 8 0.05 %/w enable input v il enable input voltage level logic low (off) 0.6 a v ih logic high (on) 2.0 a i il enable input current v il 0.6v 0.01 1 a i ih v ih 2.0v 15 50 a note 1. exceeding the absolute maximum rating may damage the device. note 2. the device is not guaranteed to function outside its operating rating. note 3: the maximum allowable power dissipation at any t a (ambient temperature) is p d(max) = (t j(max) C t a ) ja . exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. the ja is 250c/w for the sot -143 and 220c/w for the sot-23-5 mounted on a printed circuit board. note 4: output voltage temperature coeffcient is defned as the worst case voltage change divided by the total temperature range. note 5: regulation is measured at constant junction temperature using low duty cycle pulse testing. parts are tested for load regulation in the load range from 0.1ma to 150ma. changes in output voltage due to heating effects are covered by the thermal regulation specifcation. note 6: dropout voltage is defned as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1v differential. note 7: ground pin current is the regulator quiescent current plus pass transistor base current. the total current drawn from the supply is the sum of the load current plus the ground pin current. note 8: thermal regulation is defned as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line regulation effects. specifcations are for a 150ma load pulse at v in = 16v for t = 10ms. absolute maximum ratings (note 1) input supply voltage (v in ) ............................... C20v to +20v enable input voltage (v en ) .............................. C20v to +20v power dissipation (p d ) ............................. internally limited storage temperature range (t s ) ............. C60c to +150c lead temperature (soldering, 5 sec.) ....................... 260c operating ratings (note 2) input voltage (v in ) .............................................. 2.5v to 16v enable input voltage (v en ) ...................................... 0v to v in junction temperature range ................... C40c to +125c thermal resistance ( ja ) .......................................... note 3
mic5203 4 february 2009 mic5203 micrel, inc. typical characteristics 1 10 100 1000 0.0 1 0. 1 1 1 0 100 ) v m ( e g a t l o v t u o p o r d output current (ma) dropout voltage vs. output current c in = 10 f c out = 1 f 0 100 200 300 400 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) v m ( e g a t l o v t u o p o r d temperature ( c) dropout voltage vs. temperature c in = 10 f c out = 1 f i l = 100 a i l = 1ma i l = 80ma 0 1 2 3 4 01234 5 6 7 ) v ( e g a t l o v t u p t u o supply voltage (v) dropout characteristics i l = 80ma i l = 100 a c in = 10 f c out = 1 f 0 500 1000 1500 2000 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 80 ( t n e r r u c d n u o r g ) a output current (ma) ground current vs. output current v in = v out + 1v 0.0 0.5 1.0 1.5 2.0 01234 5 6 7 ) a m ( t n e r r u c d n u o r g supply voltage (v) ground current vs. supply voltage i l = 50ma i l = 100 a v out = 3.3v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) a m ( t n e r r u c d n u o r g temperature ( c) ground current vs. temperature i l = 50ma i l = 100 a c in = 10 f c out = 1 f i l = 80ma 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 5 0 10 0 15 0 200 ) v ( e g a t l o v t u p t u o output current (ma) c in = 10 f c out = 1 f output voltage vs. output current 0 20 40 60 80 100 120 140 160 01234 5 6 7 ) a m ( t n e r r u c t i u c r i c t r o h s input voltage (v) short circuit current vs. input voltage c in = 10 f c out = 1 f -60 -40 -20 0 20 40 60 ? ) v m ( t u p t u o -50 0 50 100 -2 0 2 46 8 1 0 1 2 1 4 16 ) a m ( d a o l time (ms) thermal regulation (3.3v version) c l = 1 f 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) v ( e g a t l o v t u p t u o temperature ( c) output voltage vs. temperature c in = 10 f c out = 1 f curves applicable at 100 a and 50ma 3 devices hi / avg / lo 100 120 140 160 180 200 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) a m ( t n e r r u c t u p t u o temperature ( c) short circuit current vs. temperature c in = 10 f c out = 1 f 3.3 3.4 3.5 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) v ( e g a t l o v y l p p u s . n i m temperature ( c) minimum supply voltage vs. temperature i l = 1ma v out = 3.3v c in = 10 f c out = 1 f
february 2009 5 mic5203 mic5203 micrel, inc. -50 0 50 100 -5 0 5 1 0 1 5 20 ) a m ( t u p t u o time (ms) -200 -100 0 100 ? ) v m ( t u p t u o load transient c out = 10 f v in = v out + 1 -2 -1 0 1 2 3 ? ) v ( t u p t u o 2 4 6 8 -0.2 0. 0 0. 2 0. 4 0. 6 0. 8 1.0 ) v ( t u p n i time (ms) line transient c l = 1 f i l = 1ma -1 0 1 2 ? ) v ( t u p t u o 2 4 6 8 -0.2 0. 0 0. 2 0. 4 0. 6 0. 8 1.0 ) v ( t u p n i time (ms) line transient c l = 11 f i l = 1ma 0 20 40 60 80 100 0 1 x 0 1 0 0 1 x 0 0 1 0 0 1 x 1 3 0 1 x 0 1 3 0 1 x 0 0 1 3 0 1 x 1 6 ) b d ( e g a t l o v e l p p i r frequency (hz) ripple voltage vs. frequency i l = 1ma c l = 1 f v in = v out + 1 0 20 40 60 80 100 0 1 x 0 1 0 0 1 x 0 0 1 0 0 1 x 1 3 0 1 x 0 1 3 0 1 x 0 0 1 3 0 1 x 1 6 ) b d ( e g a t l o v e l p p i r frequency (hz) ripple voltage vs. frequency i l = 50ma c l = 1 f v in = v out + 1 0 20 40 60 80 100 0 1 x 0 1 0 0 1 x 0 0 1 0 0 1 x 1 3 0 1 x 0 1 3 0 1 x 0 0 1 3 0 1 x 1 6 ) b d ( e g a t l o v e l p p i r frequency (hz) ripple voltage vs. frequency i l = 100 a c l = 1 f v in = v out + 1 -400 -200 0 200 ? ) v m ( t u p t u o -50 0 50 100 -1 0 1 23 4 56 7 8 ) a m ( t u p t u o time (ms) load transient c out = 1 f v in = v out + 1 0.01 0.1 1 10 100 1000 0 1 x 1 0 0 1 x 0 1 0 0 1 x 0 0 1 0 0 1 x 1 3 0 1 x 0 1 3 0 1 x 0 0 1 3 0 1 x 1 6 ( e c n a d e p m i t u p t u o ? ) frequency (hz) output impedance i l = 100 a i l = 1ma i l = 100ma -1 0 1 2 3 4 5 ) v ( t u p t u o -2 0 2 4 -0.2 0. 0 0. 2 0. 4 0. 6 0. 8 1.0 ) v ( e l b a n e time (ms) enable characteristics (3.3v version) c l = 1 f i l = 100 a -1.0 0.0 1.0 2.0 3.0 4.0 ) v ( t u p t u o -2 0 2 4 -2 0 2 4 6 8 10 ) v ( e l b a n e time ( s) enable characteristics (3.3v version) c l = 1 f i l = 100 a 0.50 0.75 1.00 1.25 1.50 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ) v m ( e g a t l o v e l b a n e temperature ( c) enable voltage vs. temperature c in = 10 f c out = 1 f i l = 1ma v on v off 0 10 20 30 40 -6 0 -3 0 0 3 0 6 0 9 0 12 0 150 ( t n e r r u c e l b a n e ) a temperature ( c) enable current vs. temperature c in = 10 f c out = 1 f i l = 1ma v en = 5v v en = 2v
mic5203 6 february 2009 mic5203 micrel, inc. applications information input capacitor a 0.1f capacitor should be placed from in to gnd if there is more than 10 inches of wire between the input and the ac flter capacitor or when a battery is used as the input. output capacitor typical pnp based regulators require an output capacitor to prevent oscillation. the mic5203 is ultrastable, requiring only 0.47f of output capacitance for stability. the regulator is stable with all types of capacitors, including the tiny, low-esr ceramic chip capacitors. the output capacitor value can be increased without limit to improve transient response. the capacitor should have a resonant frequency above 500khz. ceramic capacitors work, but some dielectrics have poor temperature coeffcients, which will affect the value of the output capacitor over temperature. tantalum capacitors are much more stable over temperature, but typically are larger and more expensive. aluminum electrolytic capacitors will also work, but they have electrolytes that freeze at about C30c. tantalum or ceramic capacitors are recommended for operation below C25c. no-load stability the mic5203 will remain stable and in regulation with no load (other than the internal voltage divider) unlike many other voltage regulators. this is especially important in cmos ram keep-alive applications. enable input the mic5203 features nearly zero off-mode current. when en (enable input) is held below 0.6v, all internal circuitry is powered off. pulling en high (over 2.0v) re-enables the device and allows operation. en draws a small amount of current, typically 15a. while the logic threshold is ttl/cmos compatible, en may be pulled as high as 20v, independent of v in .
february 2009 7 mic5203 mic5203 micrel, inc. package information sot-23-5 (m5) 0.150 (0.0059) 0.089 (0.0035) 8 0 0.400 (0.016) typ 3 places 2.50 (0.098) 2.10 (0.083) 1.40 (0.055) 1.20 (0.047) 0.950 (0.0374) typ 3.05 (0.120) 2.67 (0.105) 0.800 (0.031) typ 1.12 (0.044) 0.81 (0.032) 0.10 (0.004) 0.013 (0.0005) dimensions: mm (inch) 0.41 (0.016) 0.13 (0.005) c l c l sot-143 (m4) micrel inc. 2180 fortune drive san jose, ca 95131 usa t e l + 1 (408) 944-0800 f a x + 1 (408) 474-1000 w e b http://www.micrel.com this information furnished by micrel in this data sheet is believed to be accurate and reliable. however no responsibility is assumed by micrel for its use. micrel reserves the right to change circuitry and specifcations at any time without notifcation to the customer . 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 to perform can be reasonably expected to result in a signifcant 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 and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 1998 micrel, inc.
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