? semiconductor components industries, llc, 2009 december, 2009 ? rev. 4 1 publication order number: CAT6218/d CAT6218 300 ma cmos ldo regulator description the CAT6218 is a 300 ma cmos low dropout regulator that provides fast response time during load current and line voltage changes. the quick ? start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn ? on time of just 150 s. with zero shutdown current and low ground current of 55 a typical, the CAT6218 is ideal for battery ? operated devices with supply voltages from 2.3 v to 5.5 v. an internal under voltage lockout circuit disables the output at supply voltages under 2.1 v typical. the CAT6218 offers 1% initial accuracy and low dropout voltage, 180 mv typical at 300 ma. stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. other features include fold ? back current limit and thermal protection. the device is available in the low profile (1 mm max height) 5 ? lead thin sot23 package. features ? guaranteed 300 ma output current ? low dropout voltage of 180 mv typical at 300 ma ? stable with 1 f ceramic output capacitor ? external 10 nf bypass capacitor for low noise ? quick ? start feature ? no ? load ground current of 55 a typical ? full ? load ground current of 80 a typical ? 1.0% initial accuracy (v out 2.0 v) ? 2.0% accuracy over temperature (v out 2.0 v) ? ?zero? current shutdown mode ? fold ? back current limit and under ? voltage lockout ? thermal protection ? thin sot23 ? 5 package ? these devices are pb ? free, halogen free/bfr free and are rohs compliant applications ? cellular phones ? battery ? powered devices ? consumer electronics http://onsemi.com tsot ? 23 td suffix case 419ae pin connections ruym marking diagram 1 5 (top view) vout byp vin gnd en 1 see detailed ordering and shipping information in the package dimensions sectio n on page 9 of this data sheet. ordering information supply voltage input. 1 ground reference. 2 enable input (active high); a 2.5 m pull ? down resistor is provided. 3 optional bypass capacitor connec- tion for noise reduction and psrr enhancing. 4 ldo output voltage. 5 function pin # pin function name vin gnd en byp vout ru= CAT6218 device code y = production year (last digit) m = production month: 1 ? 9, a, b, c
CAT6218 http://onsemi.com 2 figure 1. typical application circuit vin byp en vout gnd off on 1 f 2.3 v to 5.5 v 1 f 10 nf CAT6218 figure 2. CAT6218 functional block diagram byp en gnd vin vout shutdown switch ldo reference c in v in v out c out c byp (optional) v in v out pin function vin is the supply pin for the ldo. a small 1 f ceramic bypass capacitor is required between the v in pin and ground near the device. when using longer connections to the power supply, c in value can be increased without limit. the operating input voltage range is from 2.3 v to 5.5 v. en is the enable control logic (active high) for the regulator output. it has a 2.5 m pull ? down resistor, which assures that if en pin is left open, the circuit is disabled. vout is the ldo regulator output. a small 1 f ceramic bypass capacitor is required between the v out pin and ground for stability. for better transient response, its value can be increased to 4.7 f. the capacitor should be located near the device. esr domain is 5 m to 500 m . v out can deliver a maximum guaranteed current of 300 ma. for input ? to ? output voltages higher than 1 v, a continuous 300 ma output current might turn ? on the thermal protection. a 250 internal shutdown switch discharges the output capacitor in the no ? load condition. gnd is the ground reference for the ldo. the pin must be connected to the ground plane on the pcb. byp is the reference bypass pin. an optional 0.01 f capacitor can be connected between byp pin and gnd to reduce the output noise and enhance the psrr at high frequency. table 1. absolute maximum ratings parameter rating unit v in 0 to 6.5 v v en , v out ? 0.3 to v in + 0.3 v junction temperature, t j +150 c power dissipation, p d internally limited (note 1) mw storage temperature range, t s ? 65 to +150 c lead temperature (soldering, 5 sec.) 260 c esd rating (human body model) 3 kv stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. table 2. recommended operating conditions (note 2) parameter range unit v in 2.3 to 5.5 v v en 0 to v in v junction temperature range, t j ? 40 to +125 c package thermal resistance (sot23 ? 5), ja 235 c/w note: typical application circuit with external components is shown above. 1. the maximum allowable power dissipation at any t a (ambient temperature) is p dmax = (t jmax ? t a )/ ja . exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 2. the device is not guaranteed to work outside its operating rating.
CAT6218 http://onsemi.com 3 table 3. electrical operating characteristics (note 3) (v in = v out + 1.0 v, v en = high, i out = 100 a, c in = c out = 1 f, ambient temperature of 25 c (over recommended operating conditions unless specified otherwise). bold numbers apply for the entire junction temperature range.) symbol parameter conditions min typ max unit v out ? acc output voltage accuracy initial accuracy for v out 2.0 v (note 6) ? 1.0 +1.0 % ? 2.0 +2.0 tc out output voltage temp. coefficient 40 ppm/ c v r ? line line regulation v in = v out + 1.0 v to 5.5 v ? 0.2 0.1 +0.2 %/v ? 0.4 +0.4 v r ? load load regulation i out = 100 a to 300 ma 0.7 1.2 % 1.5 v drop dropout voltage (note 4) i out = 300 ma 180 250 mv 300 i gnd ground current i out = 0 a 55 75 a 90 i out = 300 ma 80 i gnd ? sd shutdown ground current v en < 0.4 v 1 a 2 psrr power supply rejection ratio f = 1 khz, c byp = 10 nf 64 db f = 20 khz, c byp = 10 nf 54 i sc output short circuit current limit v out = 0 v 180 ma t on turn ? on time c byp = 10 nf 150 s e n output noise voltage (note 5) bw = 10 hz to 100 khz 45 vrms r out ? sh shutdown switch resistance 250 r en enable pull ? down resistor 2.5 m v uvlo under ? voltage lock out (uvlo) threshold 2.1 v esr c out equivalent series resistance 5 500 m enable input v hi logic high level v in = 2.3 to 5.5 v 1.8 v v in = 2.3 to 5.5 v, 0 c to +125 c junction temperature 1.6 v lo logic low level v in = 2.3 to 5.5 v 0.4 v i en enable input current v en = 0.4 v 0.15 1 a v en = v in 1.5 4 thermal protection t sd thermal shutdown 160 c t hys thermal hysteresis 10 c 3. specification for 2.80 v output version unless specified otherwise. 4. dropout voltage is defined as the input ? to ? output differential at which the output voltage drops 2% below its nominal value measured at 1 v differential. during test, the input voltage stays always above the minimum 2.3 v. 5. specification for 1.8 v output version. 6. for v out < 2.0 v, the initial accuracy is 2% and across temperature 3%.
CAT6218 http://onsemi.com 4 typical characteristics (shown for 2.80 v output option) (v in = 3.85 v, i out = 100 a, c in = c out = 1 f, c byp = 10 nf, t a = 25 c unless otherwise specified.) figure 3. dropout characteristics figure 4. line regulation figure 5. load regulation figure 6. output voltage vs. temperature figure 7. ground current vs. load current figure 8. ground current vs. temperature 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 input voltage [v] output voltage [v] 100 a 300ma 2.82 2.83 2.84 2.85 2.86 2.87 2.5 3.0 3.5 4.0 4.5 5.0 5.5 input voltage [v] output voltage [v] 2.75 2.80 2.85 2.90 2.95 0 50 100 150 200 250 300 output load current [ma] output voltage [v] 2.82 2.83 2.84 2.85 2.86 2.87 ? 40 ? 10 20 50 80 110 140 temperature [ c] output voltage [v] 50 60 70 80 90 100 0 25 50 75 100 125 150 output load current [ma] ground current [ a] 45 50 55 60 65 ? 40 ? 10 20 50 80 110 140 temperature [ c] ground current [ a]
CAT6218 http://onsemi.com 5 typical characteristics (shown for 2.80 v output option) (v in = 3.85 v, i out = 100 a, c in = c out = 1 f, c byp = 10 nf, t a = 25 c unless otherwise specified.) figure 9. output voltage vs. load current figure 10. ground current vs. input voltage figure 11. dropout vs. temperature (300 ma load) figure 12. dropout vs. load current figure 13. enable threshold vs. input voltage figure 14. psrr vs. frequency (10 ma load) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 100 200 300 400 500 600 700 output load current [ma] output voltage [v] 0 10 20 30 40 50 60 70 0.0 1.0 2.0 3.0 4.0 5.0 6.0 input voltage [v] ground current [ a] 100 150 200 250 300 350 ? 40 ? 10 20 50 80 110 140 temperature [ c] dropout voltage [mv] 0 50 100 150 200 250 300 0 50 100 150 200 250 300 output load current [ma] dropout voltage [mv] 0.0 0.4 0.8 1.2 1.6 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 input voltage [v] enable threshold [v] 0 10 20 30 40 50 60 70 80 0.01 0.1 1 10 100 frequency [khz] psrr [db] c byp = 10 nf c byp = 0
CAT6218 http://onsemi.com 6 typical characteristics (shown for 2.80 v output option) (v in = 3.85 v, i out = 100 a, c in = c out = 1 f, c byp = 10 nf, t a = 25 c unless otherwise specified.) figure 15. psrr (30 ma load) figure 16. psrr (200 ma load) 0 10 20 30 40 50 60 70 0 100 200 300 400 500 vin ? vout [mv] psrr [db] 100khz 10khz 1khz 0 10 20 30 40 50 60 70 0 100 200 300 400 500 vin ? vout [mv] psrr [db] 100khz 10khz 1khz
CAT6218 http://onsemi.com 7 transient characteristics (shown for 2.80 v output option) (v in = 3.85 v, i out = 100 a, c in = c out = 1 f, c byp = 10 nf, t a = 25 c unless otherwise specified.) figure 17. enable turn ? on (100 a load) figure 18. enable turn ? off (100 a load) figure 19. enable turn ? on (300 ma load) figure 20. enable turn ? off (300 ma load) figure 21. line transient response (3.85 v to 4.85 v) figure 22. load transient response (0.1 ma to 300 ma) note: all transient characteristics are generated using the evaluation board cat621xeval1.
CAT6218 http://onsemi.com 8 package dimensions tsot ? 23, 5 lead case 419ae ? 01 issue o e1 e a2 a1 e b d c a top view side view end view l1 l l2 notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-193. symbol min nom max a a1 a2 b c d e e1 e l 0o 8o l1 l2 0.01 0.80 0.30 0.12 0.30 0.05 0.87 0.15 2.90 bsc 2.80 bsc 1.60 bsc 0.95 typ 0.40 0.60 ref 0.25 bsc 1.00 0.10 0.90 0.45 0.20 0.50
CAT6218 http://onsemi.com 9 example of ordering information (note 9) prefix device # suffix company id cat 6218 product number 6218 t3 t: tape & reel 3: 3,000 / reel tape & reel (note 11) (optional) td package td: tsot ? 23 g g: nipdau lead finish ? 180 150: 1.50 v 180: 1.80 v 240: 2.40 v 250: 2.50 v 270: 2.70 v 280: 2.80 v 285: 2.85 v 300: 3.00 v 320: 3.20 v 330: 3.30 v v out voltage (note 10) ordering information orderable part number v out voltage package shipping CAT6218 ? 150tdgt3 1.50 v tsot ? 23 3,000 / tape & reel CAT6218 ? 180tdgt3 1.80 v tsot ? 23 3,000 / tape & reel CAT6218 ? 240tdgt3 2.40 v tsot ? 23 3,000 / tape & reel CAT6218 ? 250tdgt3 2.50 v tsot ? 23 3,000 / tape & reel CAT6218 ? 270tdgt3 2.70 v tsot ? 23 3,000 / tape & reel CAT6218 ? 280tdgt3 2.80 v tsot ? 23 3,000 / tape & reel CAT6218 ? 285tdgt3 (note 10) 2.85 v tsot ? 23 3,000 / tape & reel CAT6218 ? 300tdgt3 3.00 v tsot ? 23 3,000 / tape & reel CAT6218 ? 320tdgt3 (note 10) 3.20 v tsot ? 23 3,000 / tape & reel CAT6218 ? 330tdgt3 3.30 v tsot ? 23 3,000 / tape & reel 7. all packages are rohs ? compliant (lead ? free, halogen ? free). 8. the standard finish is nipdau. 9. the device used in the above example is a ca t6218 ? 180tdgt3 (v out = 1.8 v, in a tsot ? 23 package, nipdau, t ape & reel, 3,000/reel). 10. for other voltage options, please contact your nearest on semiconductor sales office. 11. for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and ree l packaging specifications brochure, brd8011/d. on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. CAT6218/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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