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ame, inc. 1 ame8803 / 8814 300ma cmos ldo n typical application n functional block diagram l very low dropout voltage l guaranteed 300ma output l accurate to within 1.5% l 30 m a quiescent current l over-temperature shutdown l current limiting l short circuit current fold-back l noise reduction bypass capacitor l power good detector l power-saving shutdown mode l space-saving sot-26 (sot-23-6) l factory pre-set output voltages l low temperature coefficient the ame8803/8814 family of positive, linear regulators feature low quiescent current (30 m a typ.) with low drop- out voltage, making them ideal for battery applications. the space-saving sot-23-6 package is attractive for "pocket" and "hand held" applications. these rugged devices have both thermal shutdown, and current fold-back to prevent device failure under the "worst" of operating conditions. an additional feature is a "power good" detector, which pulls low when the output is out of regulation. in applica- tions requiring a low noise, regulated supply, place a 1000pf capacitor between bypass and ground. the ame8803/8814 is stable with an output capaci- tance of 2.2 m f or greater. l instrumentation l portable electronics l wireless devices l cordless phones l pc peripherals l battery powered widgets l electronic scales n general description n features n applications gnd out in pg overcurrent shutdown thermal shutdown en v ref =1.215v v ref x90% v ref x110% amp r1 r2 byp ame8803 out in c3 2.2 m m m m f c1 1 m m m m f gnd pg 5v out byp en c2 1000pf in
ame, inc. 2 300ma cmos ldo ame8803 / 8814 part number marking output voltage package operating temp. range ame8803aeey aapww 3.3v sot-26 - 40 o c to + 85 o c ame8803beey aaqww 3.0v sot-26 - 40 o c to + 85 o c ame8803ceey aarww 2.8v sot-26 - 40 o c to + 85 o c ame8803deey aasww 2.5v sot-26 - 40 o c to + 85 o c ame8803eeey aatww 3.8v sot-26 - 40 o c to + 85 o c ame8803feey abqww 3.6v sot-26 - 40 o c to + 85 o c ame8803geey achww 3.5v sot-26 - 40 o c to + 85 o c ame8803heey agkww 2.7v sot-26 - 40 o c to + 85 o c ame8803ieey aeqww 3.4v sot-26 - 40 o c to + 85 o c ame8803jeey agsww 2.85v sot-26 - 40 o c to + 85 o c ame8803keey ahuww 3.7v sot-26 - 40 o c to + 85 o c ame8803leey ajkww 1.5v sot-26 - 40 o c to + 85 o c ame8803meey ajlww 1.8v sot-26 - 40 o c to + 85 o c ame8803neey alaww 2.9v sot-26 - 40 o c to + 85 o c ame8803oeey albww 3.1v sot-26 - 40 o c to + 85 o c n pin configuration ame 8803 1. v in 2. gnd 3. en 4. pg 5. byp 6. v out n ordering information sot-26 top view sot-26 w top view ame 8814 1. en 2. gnd 3. byp 4. v out 5. gnd 6. v in 13 2 6 4 5 ame8814 13 2 6 4 5 ame8803
ame, inc. 3 ame8803 / 8814 300ma cmos ldo part number marking output voltage package operating temp. range ame8814aeey aieww 3.3v sot-26 - 40 o c to + 85 o c ame8814beey aifww 3.0v sot-26 - 40 o c to + 85 o c ame8814ceey aigww 2.8v sot-26 - 40 o c to + 85 o c ame8814deey aihww 2.5v sot-26 - 40 o c to + 85 o c ame8814eeey aiiww 3.8v sot-26 - 40 o c to + 85 o c ame8814feey aijww 3.6v sot-26 - 40 o c to + 85 o c ame8814geey aikww 3.5v sot-26 - 40 o c to + 85 o c ame8814heey ailww 2.7v sot-26 - 40 o c to + 85 o c ame8814ieey aimww 3.4v sot-26 - 40 o c to + 85 o c ame8814jeey ainww 2.85v sot-26 - 40 o c to + 85 o c ame8814keey aioww 3.7v sot-26 - 40 o c to + 85 o c ame8814leey ajdww 1.5v sot-26 - 40 o c to + 85 o c ame8814meey ajeww 1.8v sot-26 - 40 o c to + 85 o c AME8814NEEY akyww 2.9v sot-26 - 40 o c to + 85 o c ame8814oeey akzww 3.1v sot-26 - 40 o c to + 85 o c n ordering information (contd.) please consult ame sales office or authorized rep./distributor for other output voltage and package type availability.
ame, inc. 4 300ma cmos ldo ame8803 / 8814 maximum unit thermal resistance ( q ja )sot-26260 thermal resistance ( q ja ) sot-26w 260 internal power dissipation (p d ) ( d t = 100 o c) sot-26 380 internal power dissipation (p d ) ( d t = 100 o c) sot-26w 380 150 300 maximum lead temperature (10 sec) maximum junction temperature parameter o c / w mw o c parameter rating unit ambient temperature range - 40 to + 85 o c junction temperature - 40 to + 125 o c n absolute maximum ratings n recommended operating conditions n thermal information caution: stress above the listed absolute maximum rating may cause permanent damage to the device parameter maximum unit input voltage 8 v output current p d / (v in - v o )ma input, output voltage gnd - 0.3 to v in + 0.3 v esd classification b
ame, inc. 5 ame8803 / 8814 300ma cmos ldo parameter symbol min typ max units input voltage v in note 1 7 v output voltage accuracy v o -1.5 1.5 % 1.2v<=v o(nom) <=2.0v 1300 2.0v1.2v v o <0.8v i o =0ma i o =1ma to 300ma i o =1ma v in =v o +1 to v o +2 test condition i o =1ma % see chart mv v o >1.2v i o =300ma v o =v o(nom) -2.0% n electrical specifications ta = 25 o c unless otherwise noted note1: v in(min) =v out +v dropout note2: to prevent the short circuit current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied.
ame, inc. 6 300ma cmos ldo ame8803 / 8814 the ame8803/8814 family of cmos regulators con- tain a pmos pass transistor, voltage reference, error am- plifier, over-current protection, thermal shutdown, and power good detection circuitry. the p-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal pro- tection circuits. during normal operation, the error am- plifier compares the output voltage to a precision refer- ence. over-current and thermal shutdown circuits be- come active when the junction temperature exceeds 150 o c, or the current exceeds 300ma. during thermal shutdown, the output voltage remains low. normal op- eration is restored when the junction temperature drops below 120 o c. the ame8803/8814 switches from voltage mode to cur- rent mode when the load exceeds the rated output cur- rent. this prevents over-stress. the ame8803 also in- corporates current foldback to reduce power dissipation when the output is short circuited. this feature becomes active when the output drops below 0.8volts, and reduces the current flow by 65%. full current is restored when the voltage exceeds 0.8 volts. the enable pin normally floats high. 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 1 m a. this pin behaves much like an electronic switch. n detailed description n external capacitors n enable n power good the ame8803/8814 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. conversely, aluminum electrolytic capacitors exhibit the highest esr, resulting in the poorest ac response. un- fortunately, large value ceramic capacitors are compara- tively expensive. one option is to parallel a 0.1 m f ce- ramic 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 rejec- tion, but also makes the output come up 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. the ame8803/8814 includes the power good feature. when the output is not within 15% of the specified volt- age, it pulls low. this can occur under the following con- ditions: 1) input voltage too low. 2) during over-temperature. 3) during over-current. 4) if output is pulled up. (note: pg pin is an open-drain output.)
ame, inc. 7 ame8803 / 8814 300ma cmos ldo ground current vs. input voltage load step (1ma-300ma) chip enable transient response chip enable transient response drop out voltage vs. output voltage drop out voltage vs. load current time( 20ms/div) c l =2.2 m f c in =2.2 m f output i load 0 i l (200ma/div) v o (5mv/div) 0 0 output (1v/div) enable (2v/div) time ( 1ms/div) c l =2 m f r l =10 w c byp =1000pf 0 0 time ( 1ms/div) c l =2 m f r l =10 w output (1v/div) enable (2v/div) 0 50 100 150 200 250 300 2.5 2.75 3 3.25 3.5 3.75 4 output voltage (v) drop out voltage (mv) i load =300ma i load =200ma i load =100ma 0 50 100 150 200 250 0 50 100 150 200 250 300 load current (ma) dropout voltage (mv) top to bottom v out =2.5v v out =2.8v v out =3.0v v out =3.3v v out =3.5v v out =3.8v ground current ( m m m m a) input voltage (v) 0 5 10 15 20 25 30 35 40 45 012345678 85 o c 25 o c
ame, inc. 8 300ma cmos ldo ame8803 / 8814 power supply rejection ratio short circuit response overtemperature shutdown power supply rejection ratio power supply rejection ratio power supply rejection ratio r load =100 w r short =0.1 w 0 0 tim e (2ms/div) v out (1v/div) i load (400ma/div) v out (1v/div) i out (200ma/div) tim e (0.5sec/div) 0 0 r load =6.6 w -80 -70 -60 -50 -40 -30 -20 10 1k 100k 10m psrr (db) frequency (hz) c l =2.2 m f tantalum c byp =1000pf 100ma 100 m a 1ma 10ma 100ma 100 m a psrr (db) 100ma 10ma 1ma 100 m a 100ma 100 m a c l =2.2 m f tantalum c byp =0 -80 -70 -60 -50 -40 -30 -20 -10 0 10 1k 100k frequency (hz) 10m psrr ( db) frequency (hz) -80 -70 -60 -50 -40 -30 -20 -10 10 100 1k 10k 100k 1m c l = 10 m f tantalum i l = 100 ma c byp = 0 c byp = 100 pf c byp = 1 nf c byp = 10 nf psrr ( db) frequency (hz) -80 -70 -60 -50 -40 -30 -20 -10 10 100 1k 10k 100k c l = 5.6 m f ceramic i l = 100 ma c byp = 0 c byp = 100 pf c byp = 1 nf c byp = 10 nf
ame, inc. 9 ame8803 / 8814 300ma cmos ldo stability vs. esr vs. i load stability vs. esr vs. i load safe operating area current limit response noise measurement line transient response tim e (2ms/div) 0 0 v out (1v/div) i out (200ma/div) r load =3.3 w time (20ms/div) vo (1mv div) c l =2.2 m f no filter tim e (2ms/div) v o (1mv/div) v in (1v/div) v indc =5.0v c l =2.2 m f output current (ma) input-output voltage differential (v) 10 100 300 0.1 1.0 8.0 sot-23-5 esr ( w w w w ) iload (ma) 0.01 0.1 1 10 100 1000 10000 0 50 100 150 200 stable region untested region unstable region c l =1 m f iload (ma) esr ( w w w w ) 0.01 0.1 1 10 100 1000 10000 0 50 100 150 200 stable region untested region unstable region c l =2 m f
ame, inc. 10 300ma cmos ldo ame8803 / 8814 stability vs. esr vs. i load stability vs. esr vs. i load quiescent current vs. temp. load regulation vs. temp. en pin lo bias current vs. temp. shut down current vs. temp. 0.01 0.1 1 10 100 1000 10000 0 50 100 150 200 stable region untested region unstable region iload (ma) esr ( w w w w ) c l =3 m f 0.001 10000 0.01 0.1 1 10 100 1000 0 50 100 150 200 stable region untested region unstable region c l =10 m f iload (ma) esr ( w w w w ) 27 28 29 30 31 32 33 34 35 -45-5 255585 temperature ( o c) quiescent current @ 5v (ua) 0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 -45 -5 25 55 85 temperature ( o c) load regulation (%) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -45 -5 25 55 85 temperature ( o c) shut down current (ua) -0.50 -0.45 -0.40 -0.35 -0.30 -0.25 -0.20 -45 -5 25 55 85 temperature ( o c) en pin lo bias current (ua)
ame, inc. 11 ame8803 / 8814 300ma cmos ldo dropout voltage vs. temp. pg vol vs. temp. 150 160 170 180 190 200 210 220 -45 -5 25 55 85 temperature ( o c) dropout voltage @ 300ma (mv) 0.15 0.20 0.25 0.30 0.35 0.40 0.45 -45 -5 25 55 85 temperature ( o c) pg vol @ 0.4ma (v)
ame, inc. 12 300ma cmos ldo ame8803 / 8814 n package dimension sot-26(wide) min max min max a a 1 0.00 0.15 0.000 0.006 b 0.30 0.55 0.012 0.022 d 2.70 3.10 0.106 0.122 e 1.40 2.00 0.055 0.079 e h 2.60 3.00 0.1024 0.1181 l 1 0 o 10 o 0 o 10 o s 1 symbols millimeters inches 1.20ref 0.0472ref 1.90ref 0.0748ref 0.95ref 0.0374ref 0.37ref 0.0146ref top view side view front view l c 1 s1 d e e h b a a1 sot-26 min max min max a a 1 0.00 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.60 3.00 0.10236 0.11811 l 1 0 o 10 o 0 o 10 o s 1 0.37ref 0.0146ref 0.95ref 0.0374ref 1.90 bsc 0.0748 bsc symbols millimeters inches 1.20ref 0.0472ref side view l c 1 top view s1 d e e h front view b a a1
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. , september 2003 document: 2006-ds8803/8814-g corporate headquarter u.s.a. (subsidiary) analog microelectronics, inc. ame, inc. 3100 de la cruz blvd., suite 201 2f, 189 kang-chien road, nei-hu district santa clara, ca. 95054-2046 taipei 114, taiwan, r.o.c. tel : (408) 988-2388 tel : 886 2 2627-8687 fax: (408) 988-2489 fax : 886 2 2659-2989 www.ame.com.tw e-mail: sales@ame.com.tw

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