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november 2004 1 m9999-111904 micrel MIC29150/29300/29500/29750 MIC29150/29300/29500/29750 high-current low-dropout regulators rev. 11/04 general description the MIC29150/29300/29500/29750 are high current, high accuracy, low-dropout voltage regulators. using micrel's proprietary super eta pnp? process with a pnp pass ele - ment, these regulators feature 300mv to 370mv (full load) dropout voltages and very low ground current. designed for high current loads, these devices also ?nd applications in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes. the MIC29150/29300/29500/29750 are fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, overtemperature operation, and positive and negative transient voltage spikes. five pin ?xed voltage ver - sions feature logic level on/off control and an error ?ag which signals whenever the output falls out of regulation. flagged states include low input voltage (dropout), output current limit, overtemperature shutdown, and extremely high voltage spikes on the input. on the mic29xx1 and mic29xx2, the enable pin may be tied to v in if it is not required for on/off control. the MIC29150/29300/29500 are available in 3- and 5-pin to-220 and surface mount to-263 packages. the mic29750 7.5a regulators are available in 3- and 5-pin to-247 packages. for applications with input voltage 6v or below, see mic3715x ldos. typical application features ? high current capability MIC29150/29151/29152/29153 ................................ 1.5a mic29300/29301/29302/29303 ................................... 3a mic29500/29501/29502/29503 ................................... 5a mic29750/29751/29752 ........................................... 7.5a ? low-dropout voltage ......................... 350mv at full load ? low ground current ? accurate 1% guaranteed tolerance ? extremely fast transient response ? reverse-battery and load dump protection ? zero-current shutdown mode (5-pin versions) ? error ?ag signals output out-of-regulation (5-pin versions) ? also characterized for smaller loads with industry- leading performance speci?cations ? fixed voltage and adjustable versions applications ? battery powered equipment ? high-ef?ciency green computer systems ? automotive electronics ? high-ef?ciency linear lower supplies ? high-ef?ciency lost-regulator for switching supply micrel, inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com super eta pnp is a trademark of micrel, inc. MIC29150/29300/29500bt and mic29750bwt mic29151/29152/29153bt mic29301/29302/29303bt mic 29501/29502/29503b mic29751/29752bwt MIC29150/29300 bu mic29151/29152/29153bt mic29301/29302/29303bt mic 29501/29502/29503b mic29751/29752bwt 1 2 3 1 2 3 1 2 3 4 5 1 2 3 4 5 pinout on all devices, the tab is grounded. m ic29150/29300/29500/29750 three terminal devices: pin 1 = input, 2 = ground, 3 = output mic29151/29301/29501/29751 five termina l fixed voltage device s: pin 1 = enable, 2 = input, 3 = ground, 4 = output, 5 = flag mic29152/29302/29502/29752 adjustable with on/off control : pin 1 = enable, 2 = input, 3 = ground, 4 = output, 5 = a djust mic29153/29303/29503/ adjustable with flag : pin 1 = flag, 2 = input, 3 = ground, 4 = output, 5 = adjust
micrel MIC29150/29300/29500/29750 november 2004 2 m9999-111904 ordering information part number temp. range* volts current package pb-free MIC29150-3.3bt - 40 c to +125 c 3.3 1.5a to-220 MIC29150-3.3bu - 40 c to +125 c 3.3 1.5a to-263 MIC29150-3.3wt - 40 c to +125 c 3.3 1.5a to-220 x MIC29150-3.3wu - 40 c to +125 c 3.3 1.5a to-263 x MIC29150-5.0bt - 40 c to +125 c 5.0 1.5a to-220 MIC29150-5.0bu - 40 c to +125 c 5.0 1.5a to-263 MIC29150-5.0wt - 40 c to +125 c 5.0 1.5a to-220 x MIC29150-5.0wu - 40 c to +125 c 5.0 1.5a to-263 x MIC29150-12bt - 40 c to +125 c 12 1.5a to-220 MIC29150-12bu - 40 c to +125 c 12 1.5a to-263 MIC29150-12wt - 40 c to +125 c 12 1.5a to-220 x MIC29150-12wu - 40 c to +125 c 12 1.5a to-263 x mic29151-3.3bt - 40 c to +125 c 3.3 1.5a to-220-5 mic29151-3.3bu - 40 c to +125 c 3.3 1.5a to-263-5 mic29151-3.3wu - 40 c to +125 c 3.3 1.5a to-263-5 x mic29151-5.0bt - 40 c to +125 c 5.0 1.5a to-220-5 mic29151-5.0bu - 40 c to +125 c 5.0 1.5a to-263-5 mic29151-12bt - 40 c to +125 c 12 1.5a to-220-5 mic29151-12bu - 40 c to +125 c 12 1.5a to-263-5 mic29152bt - 40 c to +125 c adj 1.5a to-220-5 mic29152bu - 40 c to +125 c adj 1.5a to-263-5 mic29152wu - 40 c to +125 c adj 1.5 to-263-5 x mic29153bt - 40 c to +125 c adj 1.5a to-220-5 mic29153bu - 40 c to +125 c adj 1.5a to-263-5 mic29300-3.3bt - 40 c to +125 c 3.3 3.0a to-220 mic29300-3.3bu - 40 c to +125 c 3.3 3.0a to-263 mic29300-3.3wt - 40 c to +125 c 3.3 3.0a to-220 x mic29300-3.3wu - 40 c to +125 c 3.3 3.0a to-263 x mic29300-5.0bt - 40 c to +125 c 5.0 3.0a to-220 mic29300-5.0bu - 40 c to +125 c 5.0 3.0a to-263 mic29300-5.0wt - 40 c to +125 c 5.0 3.0a to-220 x mic29300-5.0wu - 40 c to +125 c 5.0 3.0a to-263 x mic29300-12bt - 40 c to +125 c 12 3.0a to-220 mic29300-12bu - 40 c to +125 c 12 3.0a to-263 mic29300-12wt - 40 c to +125 c 12 3.0a to-200 x mic29300-12wu - 40 c to +125 c 12 3.0a to-263 x mic29301-3.3bt - 40 c to +125 c 3.3 3.0a to-220-5 mic29301-3.3bu - 40 c to +125 c 3.3 3.0a to-263-5 mic29301-3.3wu - 40 c to +125 c 3.3 3.0a to-263-5 x mic29301-5.0bt - 40 c to +125 c 5.0 3.0a to-220-5 mic29301-5.0bu - 40 c to +125 c 5.0 3.0a to-263-5 mic29301-5.0wu - 40 c to +125 c 5.0 3.0a to-263-5 x mic29301-12bu - 40 c to +125 c 12 3.0a to-263-5 mic29302bt - 40 c to +125 c adj 3.0a to-220-5 mic29302bu - 40 c to +125 c adj 3.0a to-263-5
micrel MIC29150/29300/29500/29750 november 2004 3 m9999-111904 mic29302wu - 40 c to +125 c adj 3.0a to-263-5 x mic29303bt - 40 c to +125 c adj 3.0a to-220-5 mic29303bu - 40 c to +125 c adj 3.0a to-263-5 mic29303wu - 40 c to +125 c adj 3.0a to-263-5 x mic29500-3.3bt - 40 c to +125 c 3.3 5.0a to-220 mic29500-5.0bt - 40 c to +125 c 5.0 5.0a to-220 mic29501-3.3bt - 40 c to +125 c 3.3 5.0a to-220-5 mic29501-3.3bu - 40 c to +125 c 3.3 5.0a to-263-5 mic29501-5.0bt - 40 c to +125 c 5.0 5.0a to-220-5 mic29501-5.0bu - 40 c to +125 c 5.0 5.0a to-263-5 mic29502bt - 40 c to +125 c adj 5.0a to-220-5 mic29502bu - 40 c to +125 c adj 5.0a to-263-5 mic29502wt - 40 c to +125 c adj 5.0a to-220-5 x mic29502wu - 40 c to +125 c adj 5.0a to-263-5 x mic29503bt - 40 c to +125 c adj 5.0a to-220-5 mic29503bu - 40 c to +125 c adj 5.0a to-263-5 mic29750-3.3bwt - 40 c to +125 c 3.3 7.5a to-247-3 mic29750-5.0bwt - 40 c to +125 c 5.0 7.5a to-247-3 mic29751-3.3bwt - 40 c to +125 c 3.3 7.5a to-247-5 mic29751-5.0bwt - 40 c to +125 c 5.0 7.5a to-247-5 mic29752bwt - 40 c to +125 c adj 7.5a to-247-5 * junction temperature.
november 2004 4 m9999-111904 micrel MIC29150/29300/29500/29750 absolute maximum ratings power dissipation ..................................... internally limited lead temperature (soldering, 5 seconds) ................ 260 c storage temperature range ..................... -65c to +150 c input supply voltage (1) ................................... -20v to +60v operating ratings operating junction temperature .............. C40c to +125c maxim um operating input voltage ................................ 26v to-220 ( jc ) ............................................................................. 2 c/w to-263 ( jc ) ............................................................................. 2 c/w to-247 ( j c ) .......................................................... 1.5c/w electrical characteristics (12) all measures at t a = 25 c unless otherwise noted. b old values are gu aranteed acr oss the operating temperature range. adjustable versions are prog rammed to 5.0v. parameter condition min typ max units output voltage i o = 10ma -1 1 % 10ma i o i fl , (v out + 1v) v in 26v (2) -2 2 % line regulation i o = 10ma, (v out + 1v) v in 26v 0.06 0.5 % load regulation v in = v out + 5v, 10ma i out i full load (2,6) 0.2 1 % ? v o ? t output voltage (6) temperature coef. 20 100 ppm/ c dropout voltage ? v out = -1% (3) MIC29150 mic29300 mic29500 mic29750 i o = 100ma i o = 750ma i o = 1.5a i o = 100ma i o = 1.5a i o = 3a i o = 250ma i o = 2.5a i o = 5a i o = 250ma i o = 4a i o = 7.5a 80 220 350 80 250 370 125 250 370 80 270 425 200 600 175 600 250 600 200 600 mv ground current MIC29150 mic29300 mic29500 mic29750 i o = 750ma, v in = v out + 1v i o = 1.5a i o = 1.5a, v in = v out + 1v i o = 3a i o = 2.5a, v in = v out + 1v i o = 5a i o = 4a, v in = v out + 1 v i o = 7.5a 8 22 10 37 15 70 35 120 20 35 50 75 ma ma ma ma i grnddo ground pin current at droupout v in = 0.5v less than speci?ed v out ? i out = 10ma MIC29150 mic29300 mic29500 mic29750 0.9 1.7 2.1 3.1 ma ma ma ma current limit MIC29150 mic29300 mic29500 mic29750 v out = 0v (4) v out = 0v (4) v out = 0v (4) v out = 0v (4) 2.1 4.5 7.5 9.5 3.5 5.0 10.0 15 a a a a e n , output noise voltage (10hz to 100khz) i l = 100ma c l = 10 f c l = 33 f 400 260 v (rms) ground current in shutdown MIC29150/1/2/3 only v en = 0.4v 2 10 30 a a
november 2004 5 m9999-111904 micrel MIC29150/29300/29500/29750 parameter condition min typ max units reference mic29xx2/mic29xx3 reference voltage 1.228 1.215 1.240 1.252 1.265 v v max reference voltage (8) 1.203 1.277 v adjust pin bias current 40 80 120 na reference voltage temperature coef?cient (7) 20 ppm/ c adjust pin bias current temperature coef?cient 0.1 na/ c flag output (error comparator) mic29xx1/29xx3 output leakage current v oh = 26v 0.01 1.00 2.00 a output low voltage device set for 5v, v in = 4.5v i ol = 250 a 220 300 400 mv upper threshold voltage device set for 5v (9) 40 25 60 mv lower threshold voltage device set for 5v (9) 75 95 140 mv hysteresis device set for 5v (9) 15 mv enable input mic29xx1/mic29xx2 input logic voltage low (off) high (on) 24 0.8 v enable pin input current v en = 26v 100 600 750 a v en = 26v 2 4 a regulator output current in shutdown (10) 10 500 a notes: 1. maximum positive supply voltage of 60v must be o f limited duration (<100msec) and duty cycle ( 1%). the m aximum continuous supply voltage is 26v. 2. full load current (i fl ) is de?ned as 1.5a for the MIC29150, 3a for the mic29300, 5a for the mic29500, and 7.5a for t he mic29750 families. 3. dro pout vo ltage is de?ned as the input-to-outp ut differential when th e output vol tage drops to 99% of its normal value with v out + 1v applied to v in . 4. v in = v out (nomi nal) + 1v. for example, use v in = 4.3 v for a 3.3v regulator or use 6v for a 5v regula tor. empl oy pulse-testing precedures to pin current. 5. ground pin current is the regula tor quiescent current. the total current drawn from the source is the sum of the load current plus th e ground pin current. 6. output voltage temperature coef?cient is de?ned as the wor s t case vol tage change divided by t he total temperature ran ge. 7. thermal regulation is de?ned as the change in output voltage at a time t after a change in power siddipation is applied, excluding load or line regulation effects. s pe ci?cations are for a200ma load pulse at v in = 20v (a 4w pulse) for t = 10ms. 8. v ref v out (v in -1v), 2.3v v in 26v, 10ma < i l i fl , t j t j max . 9. comparator thresholds are expressed in terms of a voltage differential at the adjust termina l below the nominal reference voltage measured at 6v input. to express these thresholds in terms of output voltage change, mul tiply by the error ampli?er gain = v out /v ref = ( r1 + r2)/r2. for example, at a programmed output voltage of 5v, the erro r output is guaranteed to go low when the output drops by 95mv x 5v/1.240v = 384mv. thresholds remain constant as a percent of v out as v out is varied, with the dropout warning occur ring at typically 5% belo w nominal, 7.7% guaranteed. 10. v en 0.8v and v in 26v, v out = 0. 11. when used in dual supply systems where the regulator lo ad is returned to a negative supply, the outp ut voltage must be diode clampled to ground. 12. speci?cation for pack aged product only.
november 2004 6 m9999-111904 micrel MIC29150/29300/29500/29750 block diagram 1.180v 1.240v reference in flag en thermal shut- down out adj? gnd r1* r2* o.v.? i limit 28v * feedback network in fixed versions only? ? adjustable version only typical applications r1 r2 v out = 1.240v [1 + (r1 / r2)] v in v out mic29500-3.3 5v + 5% 47f 3.3v + 1% @ 5a figure 1. fixed output voltage figure 1. adjustable output voltage con?guration. for best results, the total series resistance should be small enough to pass the minim um regulator load current.
november 2004 7 m9999-111904 micrel MIC29150/29300/29500/29750 0 50 100 150 200 250 300 350 400 450 0.0 0.5 1.0 1.5 dropout voltage (mv) output current (a) mi c 2915x drop ou t v o lt ag e vs . ou tp ut c u rrent 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -60 -30 0 3 0 6 0 9 0 120 150 dropout voltage (v) temperature ( c) mi c 2915x drop ou t v o lt ag e vs . t e mp er at ur e i lo ad = 1. 5a 0.0 1.0 2.0 3.0 4.0 5.0 0 1 2 3 4 5 6 output voltage (v) input voltage (v) mi c 29150- 5. 0 drop ou t c h ar ac te ri s t ic s i ou t = 10m a i ou t = 1. 5a 0 5 10 15 20 25 0.0 0.4 0.8 1.2 1.6 ground current (ma) output current (a) mi c 2915x g r ound c u rren t vs . ou tp ut c u rrent 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2915x g r ound c u rren t vs . s u ppl y v o lt ag e v ou t = 5v i lo ad = 10m a 0 10 20 30 40 50 60 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2915x g r ound c u rren t vs . s u ppl y v o lt ag e mic 29152 i ou t = 1. 5a 0 50 100 150 200 250 300 -60 -30 0 3 0 6 0 9 0 120 150 ground current ( a) temperature ( c) mi c 2915x g r ound c u rren t vs . t e mp er at ur e i lo ad = 10m a 0.0 0.5 1.0 1.5 2.0 2.5 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2915x g r ound c u rren t vs . t e mp er at ur e i lo ad = 250m a 0 5 10 15 20 25 30 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2915x g r ound c u rren t vs . t e mp er at ur e i lo ad = 1. 5a 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 -60 -30 0 3 0 6 0 9 0 120 150 output voltage (v) temperature ( c) mi c 29150- 3. 3 ou tp ut v o lt ag e vs . t e mp er at ur e 3 de v i c e s 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -60 -30 0 3 0 6 0 9 0 120 150 current (a) temperature ( c) mi c 29150- 3. 3 s h or t c i rc ui t c u rren t vs . t e mp er at ur e v ou t = 0v -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 -30 -20 -10 0 1 0 2 0 3 0 ground current ( a) input voltage (v) mi c 2915x g r ound c u rren t vs . in pu t v o lt ag e r lo ad = 100 ? v ou t = 5v typical characteristics mic2915x
november 2004 8 m9999-111904 micrel MIC29150/29300/29500/29750 0 5 10 15 20 25 30 -60 -30 0 3 0 6 0 9 0 120 150 enable current ( a) temperature ( c) mi c 29151- xx/ 2 e n ab le c u rrent vs . t e mp er au re v e n = 5v v e n = 2v -200 0 200 400 ? output (mv) -0.5 0.0 0.5 1.0 1.5 2.0 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2915x l o ad t r an s i en t c ou t = 10 f i lo ad = 10m a -200 -100 0 100 200 ? output (mv) -0.5 0.0 0.5 1.0 1.5 2.0 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2915x l o ad t r an s i en t c ou t = 100 f i lo ad = 10m a 0 10 20 30 40 50 -60 -30 0 3 0 6 0 9 0 120 150 adjust pin current (na) temperature ( c) mi c 29152/ 3 a d ju s t p i n c u rrent vs . t e mp er at ur e i lo ad = 10m a -20 -10 0 10 20 30 ? output (mv) 4 6 8 10 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2915x l i ne t r an s i en t c ou t = 10 f i lo ad = 10m a -5 0 5 10 ? output (mv) 4 6 8 10 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2915x l i ne t r an s i en t c ou t = 100 f i lo ad = 10m a 0.001 0.01 0.1 1 10 10x10 0 100x10 0 1x10 3 10x10 3 100x10 3 1x10 6 output impedance ( ? ) frequency (hz) mi c 2915x ou tp ut im pe da nc e vs . f r equenc y
november 2004 9 m9999-111904 micrel MIC29150/29300/29500/29750 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 1 2 3 dropout voltage (v) output current (a) mi c 2930x drop ou t v o lt ag e vs . ou tp ut c u rrent 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -60 -30 0 3 0 6 0 9 0 120 150 dropout voltage (v) temperature ( c) mi c 2930x drop ou t v o lt ag e vs . t e mp er at ur e i lo ad = 3a 0.0 1.0 2.0 3.0 4.0 5.0 0 2 4 6 output voltage (v) input voltage (v) mi c 29300- 3. 3 drop ou t c h ar ac te ri s t ic s i lo ad = 3a i lo ad = 10m a 0 10 20 30 40 50 0 1 2 3 ground current (ma) output current (a) mi c 2930x g r ound c u rren t vs . ou tp ut c u rrent 0.0 0.5 1.0 1.5 2.0 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2930x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v de v i c e r lo ad = 100 ? 0 25 50 75 100 125 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2930x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v i ou t = 3a 0.0 0.1 0.2 0.3 0.4 0.5 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2930x g r ound c u rren t vs . t e mp er at ur e i ou t = 10m a 0.0 0.5 1.0 1.5 2.0 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2930x g r ound c u rren t vs . t e mp er at ur e i ou t = 250m a 0 10 20 30 40 50 60 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2930x g r ound c u rren t vs . t e mp er at ur e i ou t = 3a 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 -60 -30 0 3 0 6 0 9 0 120 150 output voltage (v) temperature ( c) mi c 29300- 3. 3 ou tp ut v o lt ag e vs . t e mp er at ur e 3 de v i c e s 0 1 2 3 4 5 6 7 8 -60 -30 0 3 0 6 0 9 0 120 150 current (a) temperature ( c) mi c 29300- 5. 0 s h or t c i rc ui t c u rren t vs . t e mp er at ur e v ou t = 0v -0.5 0.0 0.5 1.0 1.5 2.0 -30 -20 -10 0 1 0 2 0 3 0 ground current (ma) input voltage (v) mi c 2930x g r ound c u rren t vs . in pu t v o lt ag e r lo ad = 100 ? typical characteristics mic2930x
november 2004 10 m9999-111904 micrel MIC29150/29300/29500/29750 0 5 10 15 20 25 30 -60 -30 0 3 0 6 0 9 0 120 150 enable current ( a) temperature ( c) mi c 29301- x/ 2 e n ab le c u rrent vs . t e mp er au re v e n = 5v v e n = 2v -200 0 200 400 600 800 ? output (mv) -1 0 1 2 3 4 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2930x l o ad t r an s i en t c ou t = 10 f i lo ad = 10m a -100 -50 0 50 100 ? output (mv) -1 0 1 2 3 4 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2930x l o ad t r an s i en t c ou t = 100 f i lo ad = 10m a 0 10 20 30 40 50 -60 -30 0 3 0 6 0 9 0 120 150 adjust pin current (na) temperature ( c) mi c 29302/ 3 a d ju s t p i n c u rrent vs . t e mp er at ur e i lo ad = 10m a -40 -20 0 20 40 ? output (mv) 2.3 4.3 6.3 8.3 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2930x l i ne t r an s i en t c ou t = 10 f i lo ad = 10m a -10 -5 0 5 10 15 ? output (mv) 2.3 4.3 6.3 8.3 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2930x l i ne t r an s i en t c ou t = 100 f i lo ad = 10m a 0.001 0.01 0.1 1 10 10x10 0 100x10 0 1x10 3 10x10 3 100x10 3 1x10 6 output impedance ( ? ) frequency (hz) mi c 2915x ou tp ut im pe da nc e vs . f r equenc y
november 2004 11 m9999-111904 micrel MIC29150/29300/29500/29750 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 dropout voltage (v) output current (a) mi c 2950x drop ou t v o lt ag e vs . ou tp ut c u rrent 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -60 -30 0 3 0 6 0 9 0 120 150 dropout voltage (v) temperature ( c) mi c 2950x drop ou t v o lt ag e vs . t e mp er at ur e i lo ad = 5a 0.0 1.0 2.0 3.0 4.0 5.0 0 2 4 6 output voltage (v) input voltage (v) mi c 29500- 3. 3 drop ou t c h ar ac te ri s t ic s i lo ad = 5a i lo ad = 10m a 0 10 20 30 40 50 60 70 80 0 1 2 3 4 5 6 ) a m ( t n e r r u c d n u o r g output current (a) mic2950x ground current vs. output current 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2950x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v v e r s io ns r lo ad = 100 ? 0 25 50 75 100 125 0 1 2 3 4 5 ground current (ma) supply voltage (v) mi c 2950x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v v e r s io n i lo ad = 5a 0.0 0.1 0.2 0.3 0.4 0.5 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2950x g r ound c u rren t vs . t e mp er at ur e i ou t = 10m a 0 1 2 3 4 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2950x g r ound c u rren t vs . t e mp er at ur e i ou t = 500m a 0 25 50 75 100 125 150 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2950x g r ound c u rren t vs . t e mp er at ur e i ou t = 5a 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 -60 -30 0 3 0 6 0 9 0 120 150 output voltage (v) temperature ( c) mi c 29500- 3. 3 ou tp ut v o lt ag e vs . t e mp er at ur e 3 de v i c e s 0 1 2 3 4 5 6 7 8 9 10 -60 -30 0 3 0 6 0 9 0 120 150 current (a) temperature ( c) mi c 2950x -5 .0 s h or t c i rc ui t c u rren t vs . t e mp er at ur e v ou t = 0v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 -30 -20 -10 0 1 0 2 0 3 0 ground current (ma) input voltage (v) mi c 2950x g r ound c u rren t vs . in pu t v o lt ag e r lo ad = 100 ? typical characteristics mic2950x
november 2004 12 m9999-111904 micrel MIC29150/29300/29500/29750 0 5 10 15 20 25 30 -60 -30 0 3 0 6 0 9 0 120 150 enable current ( a) temperature ( c) mi c 29501- xx/ 2 e n ab le c u rrent vs . t e mp er au re v e n = 5v v e n = 2v -500 0 500 1000 1500 ? output (mv) -1 0 1 2 3 4 5 6 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2950x l o ad t r an s i en t c ou t = 10 f i lo ad = 10m a -100 -50 0 50 100 ? output (mv) -1 0 1 2 3 4 5 6 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2950x l o ad t r an s i en t c ou t = 100 f i lo ad = 10m a 0 10 20 30 40 50 60 70 80 -60 -30 0 3 0 6 0 9 0 120 150 adjust pin current (na) temperature ( c) mi c 29502/ 3 a d ju s t p i n c u rrent vs . t e mp er at ur e i lo ad = 10m a -100 -50 0 50 100 ? output (mv) 2.2 4.2 6.2 8.2 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2950x l i ne t r an s i en t c ou t = 10 f i lo ad = 10m a -20 -10 0 10 20 ? output (mv) 2.2 4.2 6.2 8.2 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2950x l i ne t r an s i en t c ou t = 100 f i lo ad = 10m a 0.001 0.01 0.1 1 10 10x10 0 100x10 0 1x10 3 10x10 3 100x10 3 1x10 6 output impedance ( ? ) frequency (hz) mi c 2950x ou tp ut im pe da nc e vs . f r equenc y
micrel MIC29150/29300/29500/29750 november 2004 13 m9999-111904 typical characteristics mic2975x 0 50 100 150 200 250 300 350 400 450 0 1 2 3 4 5 6 7 8 ) v m ( e g a t l o v t u o p o r d output current (a) mic2975x dropout voltage vs. output current 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -60 -30 0 3 0 6 0 9 0 120 150 dropout voltage (v) temperature ( c) mi c 2975x drop ou t v o lt ag e vs . t e mp er at ur e 0.0 1.0 2.0 3.0 4.0 5.0 0 2 4 6 output voltage (v) input voltage (v) mi c 29750- 3. 3 drop ou t c h ar ac te ri s t ic s i lo ad = 7. 5a i lo ad = 10m a 0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 ground current (ma) output current (a) mi c 2975x g r ound c u rren t vs . ou tp ut c u rrent 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 2 4 6 8 10 ground current (ma) supply voltage (v) mi c 2975x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v v e r s io n i ou t = 10m a 0 25 50 75 100 125 150 175 0 2 4 6 8 ground current (ma) supply voltage (v) mi c 2975x g r ound c u rren t vs . s u ppl y v o lt ag e f i xe d 3. 3v v e r s io n i lo ad = 7. 5a 0.0 0.1 0.2 0.3 0.4 0.5 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2975x g r ound c u rren t vs . t e mp er at ur e i ou t = 10m a 0 1 2 3 4 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2975x g r ound c u rren t vs . t e mp er at ur e i ou t = 250m a 0 50 100 150 200 -60 -30 0 3 0 6 0 9 0 120 150 ground current (ma) temperature ( c) mi c 2975x g r ound c u rren t vs . t e mp er at ur e i ou t = 7. 5a 3.20 3.22 3.24 3.26 3.28 3.30 3.32 3.34 3.36 3.38 3.40 -60 -30 0 3 0 6 0 9 0 120 150 output voltage (v) temperature ( c) mi c 29750- 3. 3 ou tp ut v o lt ag e vs . t e mp er at ur e 3 de v i c e s 0 1 2 3 4 5 6 7 8 9 10 11 12 -60 -30 0 3 0 6 0 9 0 120 150 current (a) temperature ( c) mi c 29750- 5. 0 s h or t c i rc ui t c u rren t vs . t e mp er at ur e v ou t = 0v -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -30 -20 -10 0 1 0 2 0 3 0 ground current (ma) input voltage (v) mi c 2975x g r ound c u rren t vs . in pu t v o lt ag e r lo ad = 100 ?
november 2004 14 m9999-111904 micrel MIC29150/29300/29500/29750 0 5 10 15 20 25 30 -60 -30 0 3 0 6 0 9 0 120 150 enable current ( a) temperature ( c) mi c 29751- xx/ 2 e n ab le c u rrent vs . t e mp er au re v e n = 5v v e n = 2v -500 0 500 1000 1500 ? output (mv) -2.5 0.0 2.5 5.0 7.5 10.0 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2975x l o ad t r an s i en t c ou t = 10 f i lo ad = 10m a -200 -100 0 100 200 300 ? output (mv) -2.5 0.0 2.5 5.0 7.5 10.0 -5 0 5 10 15 20 25 output (a) time (ms) mi c 2975x l o ad t r an s i en t c ou t = 100 f i lo ad = 10m a 0 10 20 30 40 50 60 70 80 -60 -30 0 3 0 6 0 9 0 120 150 adjust pin current (na) temperature ( c) mi c 29752/ 3 a d ju s t p i n c u rrent vs . t e mp er at ur e i lo ad = 10m a -100 -50 0 50 100 ? output (mv) 2.3 4.3 6.3 8.3 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2975x l i ne t r an s i en t c ou t = 10 f i lo ad = 10m a -20 -10 0 10 20 30 ? output (mv) 2.3 4.3 6.3 8.3 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 input (v) time (ms) mi c 2975x l i ne t r an s i en t c ou t = 100 f i lo ad = 10m a 0.001 0.01 0.1 1 10 10x10 0 100x10 0 1x10 3 10x10 3 100x10 3 1x10 6 output impedance ( ? ) frequency (hz) mi c 2975x ou tp ut im pe da nc e vs . f r equenc y
november 2004 15 m9999-111904 micrel MIC29150/29300/29500/29750 applications information the MIC29150/29300/29500/29750 are high performance low-dropout voltage regulators suitable for all moderate to high-current voltage regulator applications. their 300mv to400mv dropout voltage at full load make them especial - lyvaluable in battery powered systems and as high ef?ciency noise ?lters in post-regulator applications. unlike older npn-pass transistor designs, where the minimum dropout voltage is limited by the base-emitter voltage drop and col - lector-emitter saturation voltage, dropout performance of the pnp output of these devices is limited merely by the low v ce saturation voltage. a trade-off for the low-dropout voltage is a varying base driver equirement. but micrels super ?eta pnp? process reduces this drive requirement to merely 1% of the load current. the MIC29150C29750 family of regulators is fully protected from damage due to fault conditions. current limiting ispro - vided. this limiting is linear; output current under overload conditions is constant. thermal shutdown disables the device when the die temperature exceeds the 125 c maximum safe operating temperature. transient protection allows device (and load) survival even when the input voltage spikes between C20v and +60v. when the input voltage exceeds about 35v to 40v, the over voltage sensor temporarily disables the regula - tor. the output structure of these regulatorsallows voltages in excess of the desired output voltage to be applied without reverse current ?ow. mic29xx1 and mic29xx2versions offer a logic level on/off control: when disabled,the devices draw nearly zero current. an additional feature of this regulator family is a commonpin - out: a designs current requirement may change up ordown yet use the same board layout, as all of these regulatorshave identical pinouts. ou t v o u t in gnd v in figure 3. linear regulators require only two capacitorsfor operation. thermal design linear regulators are simple to use. the most complicated design parameters to consider are thermal characteristics. thermal design requires the following application-speci? parameters: ? maximum ambient temperature, t a ? output current, i out ? output voltage, v out ? input voltage, v in first, we calculate the power dissipation of the regulator fromthese numbers and the device parameters from this datasheet. p i 1.01 v v d out in out = ? ( ) where the ground current is approximated by 1% of i out . then the heat sink thermal resistance is determined with thisformula: sa j ma x a d jc cs t t p = ? ? + ( ) where t j max 125 c and cs is between 0 and 2 c/w. the heat sink may be signi?cantly reduced in applications where the minimum input voltage is known and is large com - pared with the dropout voltage. use a series inputresistor to drop excessive voltage and distribute the heat between this resistor and the regulator. the low-dropout properties of micrel super ?eta pnp regulators allow very signi?cant reductions in regulator power dissipation and the associated heat sink without compromising performance. when this technique is employed, a capacitor of at least 0.1 f is needed directly between the input and regulator ground. please refer to application note 9 and application hint 17 for further details and examples on thermal design and heat sink speci?cation. capacitor requirements for stability and minimum output noise, a capacitor on the regulator output is necessary. the value of this capacitor is dependent upon the output current; lower currents allow smaller capacitors. MIC2915029750 regulators are stable with the following minimum capacitor values at full load: device full load capacitor MIC29150...............................................10 f mic29300...............................................10 f mic29500...............................................10 f mic29750...............................................22 f this capacitor need not be an expensive low esr type: aluminum electrolytics are adequate. in fact, extremely low esr capacitors may contribute to instability. tantalum capaci - tors are recommended for systems where fast load transient response is important. where the regulator is powered from a source with a high ac impedance, a 0.1 f capacitor connected between input and gnd is recommended. this capacitor should have good characteristics to above 250khz. minimum load current the MIC29150C29750 regulators are speci?ed between ?nite loads. if the output current is too small, leakage cur - rents dominate and the output voltage rises. the following minimum load current swamps any expected leakage current across the operating temperature range:
november 2004 16 m9999-111904 micrel MIC29150/29300/29500/29750 device minimum load MIC29150..............................................5ma mic29300..............................................7ma mic29500..............................................10ma mic29750..............................................10ma adjustable regulator design r1 r2 v in v out mic29152bt 22 f 10 f figure 4.adjustable regulator with resistors the adjustable regulator versions, mic29xx2 and mic29xx3, allow programming the output voltage anywhere between 1.25v and the 26v maximum operating rating of the family. two resistors are used. resistors can be quite large, up to 1 m ? , because of the very high input impedance and low bias current of the sense comparator: the resistor values are calculated by: r r v 1.240 1 2 out = ? ? ? ? ? ? ? 1 where v o is the desired output voltage. figure 4 shows component de?nition. applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation (see above). error flag mic29xx1 and mic29xx3 versions feature an error flag,which looks at the output voltage and signals an error condition when this voltage drops 5% below its expected value. the error ?ag is an open-collector output that pulls low under fault conditions. it may sink 10ma. low output voltage signi?es a number of possible problems, including an overcurrent fault (the device is in current limit) and low input voltage. the ?ag output is inoperative during overtemperature shutdown conditions. enable input mic29xx1 and mic29xx2 versions feature an enable (en) input that allows on/off control of the device. special design allows zero current drain when the device is disabledonly microamperes of leakage current ?ows. the en input has ttl/cmos compatible thresholds for simple interfacing with logic, or may be directly tied to 30v. enabling the regulator requires approximately 20 a of current.
november 2004 17 m9999-111904 micrel MIC29150/29300/29500/29750 package information 3 -lead to-220 (t) 3 -lead to-263 (u)
november 2004 18 m9999-111904 micrel MIC29150/29300/29500/29750 0.040 C 0.060 (1.016 C 1.524) 0.780 C 0.820 (19.812 C 20.828) 0.860 C 0.880 (21.844 C 22.352) 0.200 (5.080) b s c 0.110 C 0.130 (2.794 C 3.302) 0.070 C 0.090 (1.778 C 2.286) 0 .25 0 (6.350) max mounting hole 0.125 (3.175) dia typ 0.620 C 0.640 (15.748 C 16.256) 0.160 C 0.180 (4.064 C 4.572) 0.180 C 0.200 (4.572 C 5.080) 0.190 C 0.21 0 (4.826 C 5.334) 0.070 C 0.090 (1.778 C 2.286) 0.025 C 0.03 5 (0.635 C 0.889) 7 t y p 15 t y p 15 t y p inch (mm) dimensions: 3 -lead to-247 (wt)
november 2004 19 m9999-111904 micrel MIC29150/29300/29500/29750 5 -lead to-220 (t) 1 1 3 4 1 2 3 4 2 1 5 -lead to-263 (u)
november 2004 20 m9999-111904 micrel MIC29150/29300/29500/29750 inch dimensions: 0.848 0.01 5 0.686 0.01 5 0.031 0.016 0.844 0.819 0.242 bsc 0.208 0.185 0.200 0 .02 0 0.640 0.620 0.143d 0.140d 0.045 0 .03 5 0.055 0.040 0.100 bsc 0.596 0.01 5 5 -lead to-247 (wt ) 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 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 speci?cations at any time without noti?cation 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 signi? cant 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. ? 2004 micrel incorporated

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