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ame, inc. 1 ame1300 300ma cmos ldo with reset function l ldo with intergrated microprocessor reset monitor functionality l guaranteed 300ma output l accurate to within 1.5% l 50 m a quiescent current l over-temperature shutdown l current limiting l short circuit current fold-back l noise reduction bypass capacitor l power-saving shutdown mode l space-saving msop package l factory pre-set output voltages l low temperature coefficient the ame1300 combines a low dropout regulator and a microprocessor reset monitor in a space-saving 8-pin msop package. total supply current is 50 m a(typical),20 to 60 times lower than in bipolar regulators . the ame1300 has an extremely precise output with a typical accuracy of 1.5%. other key features include ultra low noise operation, very low dropout voltage and internal feed-forward compensation for fast response to step changes in load. the ame1300 incorporates both over-temperature and over-current protection. when the shutdown control en is low, the regulator output voltage falls to zero,reset output remains valid and supply cur- rent is reduced to 10 m a(typical). the ame1300 is stable with an output capacitor of only 2.2 m f and has a mini- mum output current of 300 ma. an active low reset is asserted when the detected voltage ( v det ) falls below the reset voltage threshold. the reset output remains low for 300msec(typical) after v det rises above reset threshold. the ame1300 also has a fast wake up response time (10 m sec typically) when released from shutdown. n general description n features l instrumentation l portable electronics l wireless devices l cellular / gsm / cdma phones l pc peripherals l battery powered widgets n applications n typical applications reset shutdown control v det and v out can be connected together reset v det v det v in v in nc en v out gnd bypass cbypass (option) 470pf v out 1300 n pin configuration msop-8 top view 1. reset 2. v out 3. gnd 4. bypass 5. en 6. nc 7. v in 8. v det note: x represents the regulator output voltage. yww represents the date code. please contact ame for details 1 3 24 5 6 7 8 1300 xyww
ame, inc. 2 300ma cmos ldo with reset function ame1300 n ordering information part number marking output voltage package operating temp. range ame1300heqa270 1300 hyww 2.7v msop-8 - 40 o c to + 85 o c ame1300ceqa280 1300 cyww 2.8v msop-8 - 40 o c to + 85 o c ame1300jeqa285 1300 jyww 2.85v msop-8 - 40 o c to + 85 o c ame1300beqa300 1300 byww 3.0v msop-8 - 40 o c to + 85 o c ame1300 xeqa xxx voltage 270: v=2.7v 280: v=2.8v 285: v=2.85v 300: v=3.0v voltage symbol h: 2.7v c: 2.8v j: 2.85v b: 3.0v please consult ame sales office or authorized rep./distributor for other voltage accuracy and package type avail- ability.
ame, inc. 3 ame1300 300ma cmos ldo with reset function parameter maximum unit input voltage 7 v output current p d / (v in - v o )ma output voltage gnd - 0.3 to v in + 0.3 v esd classification b n absolute maximum ratings n recommended operating conditions parameter rating unit ambient temperature range - 40 to + 85 o c junction temperature - 40 to + 125 o c caution: stress above the listed absolute maximum rating may cause permanent damage to the device n thermal information maximum unit thermal resistance ( q jc ) msop-8 39 o c / w thermal resistance ( q ja ) msop-8 206 o c / w 150 o c 300 o c maximum lead temperature (10 sec) parameter maximum junction temperature
ame, inc. 4 300ma cmos ldo with reset function ame1300 parameter symbol min typ max units input voltage v in note 1 6 v output voltage accuracy v o -1.5 1.5 % i o =0.1ma 1 30 i o =100ma 70 130 300ma 210 390 output current i o 600 ma current limit i lim 600 800 ma short circuit current i sc 300 600 ma quiescent current i q 40 50 m a ground pin current i gnd 40 m a 2.0v<= v o < 4.0v -0.1 0.02 0.1 % 4.0v <= vo -0.4 0.2 0.4 % load regulation reg load -1 0.2 1 % over temerature shutdown ots 150 o c over temerature hysterisis oth 30 o c v o temperature coefficient tc 30 ppm/ o c v eh 2.0 vin v v el 00.4v i eh 0.5 m a i el 0.1 m a shutdown supply current i sd 10 m a shutdown output voltage v o,sd 00.4v mv v o >1.2v v o =0v i o =0ma v o =v o(nom) -2.0% v o >1.2v power supply rejection v in =5v v en =0v, v in =5v v in =5v, v o =0v, v en =0 psrr i o =100ma c o =2.2 m f f=1khz output voltage noise en f=10hz to 100khz i o =10ma i o =0.4ma, v en =0 test condition i o =1ma i o =1ma to 300ma dropout voltage v dropout line regulation reg line i o =1ma v in =v o +1 to v o +2 i o =1ma to 300ma 50 db m vrms en input threshold v in =5v en input bias current v en =v in , v in =5v co=2.2 m f30 n electrical specifications ta= 25 0 c unless otherwise noted, v in =v o(nom) +1v, i o =1ma, v en =v in, note1:v in(min) =v out +v dropout
ame, inc. 5 ame1300 300ma cmos ldo with reset function parameter symbol min typ max units v det range v det 15.5v 2.59 2.63 2.67 2.58 2.68 reset threshold tempco 30 ppm resetb output voltage low v ol v det v th max i source =0.5ma, ta= -40~85 o c 0.8v det v v det to reset delay t d1 40 m s reset active timeout period* t d2 140 210 500 ms test condition ta=-40~85 o c reset threshold v th ta= 25 o c ta= -40 ~ 85 o c v ta=-40~85 o c v det = v th - 100mv, ta= -40 ~ 85 o c n electrical specifications(contd.) reset output
ame, inc. 6 300ma cmos ldo with reset function ame1300 pin # pin name pin description 1 reset reset output remains low while v det is below the reset voltage threshold, and for 300msec v det rises above reset theshold. 2v out regulated voltage output. 3gnd ground terminal. 4bypass reference bypass input. connecting a 1000pf to this input further reduces output noise. 5en shutdown control input. the regulator is fully enabled when a logic high is applied to this input. the regulator enters shutdown when a logic low is applied to this input. during shutdown, regulator output voltage falls to zero, reset output remains valid and supply current is reduced to 10 m a (typ.) 6nc no connect. 7v in power supply input. 8v det detected input voltage. v det and v out can be connected together. n pin description reset reset v det v det v in nc en gnd bypass cbypass (option) 470pf v out + en control (from power control logic) c1 2.2 m f battery c1 1 m f 1300 the ame1300 is a combination of a fixed output, low drop-out regulator and microprocessor monitor. unlike bipolar regulators, the ame1300 supply current does not increase with load current. in addition,v out remains stable and within regulation at very low load currents(an impor- tant consideration in rtc and cmos ram battery back- up applications) as well as with any type of capacitor (see below). ame1300 pin functions are detailed below: n detailed description
ame, inc. 7 ame1300 300ma cmos ldo with reset function when actively pulled low, the pmos pass transistor shuts off, and all internal circuits are powered down. in this state, the quiescent current is less than 10 m a. this pin behaves much like an electronic switch. reset output the reset output is driven active low within 40 m sec of v det falling through the reset threshold.reset is main- tained active for a minimum of 140msec after v det rises above the reset threshold. the ame1300 has an active- low reset output. the output of the ame1300 is guar- anteed vaild down to v det = 1v and is optimized to reject fast transient glitches on the v det line. the ame1300 is stable with an output capacitor to ground of 2.2 m f or greater. ceramic capacitors have the lowest esr, and will offer the best ac performance. con- versely, aluminum electrolytic capacitors exhibit the high- est esr, resulting in the poorest ac response. unfortu- nately, large value ceramic capacitors are comparatively expensive. one option is to parallel a 0.1 m f ceramic capacitor with a 10 m f aluminum electrolytic. the benefit is low esr, high capacitance, and low overall cost. a second capacitor is recommended between the in- put and ground to stabilize vin. the input capacitor should be at least 0.1 m f to have a beneficial effect. a third capacitor can be connected between the by- pass pin and gnd. this capacitor can be a low cost polyester film variety between the value of 0.001~0.01 m f. a larger capacitor improves the ac ripple re-jection,but also makes the output come slowly. this soft turn-on is desirable in some applications to limit turn-on surges. all capacitors should be placed in close proximity to the pins. a quiet ground termination is desirable. this can be achieved with a star connection. n external capacitors n enable
ame, inc. 8 300ma cmos ldo with reset function ame1300 reset volt vs. temperature reset time vs. temperature reset vth vs. temperature dropout voltage vs. temp. load regulation vs. temp. 0.220 0.225 0.230 0.235 0.240 0.245 0.250 0.255 0.260 0.265 -45 -5 25 55 85 115 reset vol @ 0.8ma (v) temperature ( o c) reset time (ms) 190 195 200 205 210 215 220 -45 -5 25 55 85 115 temperature ( o c) 2.630 2.632 2.634 2.636 2.638 2.640 2.642 2.644 2.646 2.648 2.650 -45 -5 25 55 85 115 reset vth (v) temperature ( o c) v th =2.63v 150 160 170 180 190 200 210 220 230 -45-5255585115 dropout voltage @ 300ma (mv) vout=3.0v temperature ( o c) load regulation (%) 0.30 0.35 0.40 0.45 0.50 0.55 -20 0 20 40 60 80 temperature ( o c)
ame, inc. 9 ame1300 300ma cmos ldo with reset function min max min max a - 1.07 - 0.042 a 1 0.05 0.20 0.002 0.006 a2 0.81 0.91 0.03 0.036 b 0.28 0.38 0.011 0.015 b1 0.03 0.33 0.011 0.013 c 0.14 0.23 0.0055 0.009 c1 0.14 0.17 0.006 0.0065 d 2.90 3.10 0.114 0.12 e 4.78 4.98 0.188 0.196 e1 2.90 3.10 0.114 0.122 e e1 l 0.406 0.686 0.016 0.027 l1 l2 0 o 8 o 0 o 8 o 0.94 ref 0.037 ref 0.010 typ 0.254 typ 0.65 typ 0.0255 typ 1.95 typ 0.0767 typ symbols millimeters inches n package dimension msop-8 u note: 1. controlling dimension : millimeter, converted inchdimension are not necessarily exact. 2. dimensiioning and tolerancing per ansi y14.5m-1994. 3. dimension "d" does not include mold flash,protrusion or gate burr, mold flash,protrusion and gate burr shall not exceed 0.15mm(0.006") per side. dimension e1 do not include inter-lead flash or protrusion, inter-lead flash and protrusion shall not exceed 0.15mm(0.006") per side. 4. the package top be smaller than the package bottom. dimen- sion d and e1 are determined at outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. 5. dimension 'b' does not include dambar protrusion. allowable dambar protrusion shall be 0.08mm(0.0031) total in excess of the "b" dimension at maximum material condition.
ame, inc. 10 300ma cmos ldo with reset function ame1300 n tape and reel diagram p pin 1 w carrier tape, number of components per reel and reel size package carrier width (w) pitch (p) part per full reel reel size msop-8l 12mm 9.1mm 4000 13in
life support policy: these products of ame, inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of ame, inc. ame, inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ? ame, inc. , may 2003 document: 2006&7-ds1300-b corporate headquarter u.s.a.(subsidiary) ame, inc. analog microelectronics, inc. 2f, 189 kang-chien road, nei-hu district 3100 de la cruz blvd. suite 201 taipei 114, taiwan, r.o.c. santa clara, ca. 95054-2046 tel: 886 2 2627-8687 tel : (408) 988-2388 fax: 886 2 2659-2989 fax: (408) 988-2489 www.ame.com.tw e-mail: sales@ame.com.tw

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