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eup7201 ds7201 ver 1.5 oct. 2007 1 dual ,low-noise,150ma ldo regulator description the eup7201 is highly accurate, dual, low noise, cmos ldo voltage regulator. performance features include low output noise, high ripple rejection ratio, low dropout and very fast turn-on times. the eup7201 is also fully compatible with low esr ceramic capacitors, reducing cost and improving output stability. this high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high psrr achieved across a broad range of frequencies. the en function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption. the eup7201 is available in the sot23-6 , tdfn-6 and usp-6 package. features z up to 150ma output current (each ldo) z dual shutdown pins control each output z 124 gv rms low noise output z current limiting and thermal protection z short circuit protection z 100mv dropout at 100ma load z current limiting protection z available in sot23-6 ,tdfn-6 and usp-6 package z rohs compliant and 100% lead (pb)-free applications z cellular phones z camera, video recorders z pdas z hand-held equipment typical application circuit figure 1.
eup7201 ds7201 ver 1.5 oct. 2007 2 pin configurations package type pin configurations package type pin configurations sot23-6 tdfn-6 package type pin configurations usp-6 pin description pin sot23-6 tdfn-6 usp-6 description en1 1 3 3 on/off control v out1 vin 2 2 2 supply input en2 3 1 1 on/off control v out2 v out2 4 6 6 channel 2 output voltage gnd 5 4 4 ground v out1 6 5 5 channel1 output voltage note: if en1 and en2 are both low, both regulators and the reference turn off.
eup7201 ds7201 ver 1.5 oct. 2007 3 block diagram figure 2. ordering information order number package type marking operating temperature range eup7201-1.5/2.8vir1 sot23-6 n c ?? ?? ?? ?? -40 c to 85c eup7201-1.8/2.8vir1 sot23-6 n a ?? ?? ?? ?? -40 c to 85c eup7201-1.8/2.6vir1 sot23-6 n u ?? ?? ?? ?? -40 c to 85c eup7201-1.8/3.3vir1 sot23-6 n h ?? ?? ?? ?? -40 c to 85c eup7201-2.5/2.8vir1 sot23-6 n d ?? ?? ?? ?? -40 c to 85c eup7201-2.8/1.2vir1 sot23-6 n p ?? ?? ?? ?? -40 c to 85c eup7201-2.8/2.8vir1 sot23-6 n m ?? ?? ?? ?? -40 c to 85c eup7201-2.8/3.0vir1 sot23-6 n k ?? ?? ?? ?? -40 c to 85c eup7201-2.8/3.3vir1 sot23-6 n l ?? ?? ?? ?? -40 c to 85c eup7201-3.0/3.0vir1 sot23-6 n n ?? ?? ?? ?? -40 c to 85c eup7201-3.0/3.3vir1 sot23-6 n t ?? ?? ?? ?? -40 c to 85c eup7201-3.3/3.3vir1 sot23-6 n j ?? ?? ?? ?? -40 c to 85c
eup7201 ds7201 ver 1.5 oct. 2007 4 ordering information (continued) order number package type marking operating temperature range eup7201-1.8/2.8jir1 tdfn-6 xxxxx 7201a -40 c to 85c eup7201-1.5/2.8uir1 usp-6 xxx nc -40 c to 85c eup7201-1.8/2.8uir1 usp-6 xxx na -40 c to 85c eup7201-1.8/2.6uir1 usp-6 xxx nu -40 c to 85c eup7201-1.8/3.3uir1 usp-6 xxx nh -40 c to 85c eup7201-2.5/2.8uir1 usp-6 xxx nd -40 c to 85c eup7201-2.8/1.2uir1 usp-6 xxx np -40 c to 85c eup7201-2.8/2.8uir1 usp-6 xxx nm -40 c to 85c eup7201-2.8/3.0uir1 usp-6 xxx nk -40 c to 85c eup7201-2.8/3.3uir1 usp-6 xxx nl -40 c to 85c eup7201-3.0/3.0uir1 usp-6 xxx nn -40 c to 85c eup7201-3.0/3.3uir1 usp-6 xxx nt -40 c to 85c eup7201-3.3/3.3uir1 usp-6 xxx nj -40 c to 85c eup7201 - ???? / ???? ?? ?? ?? ?? lead free code 1: lead free 0: lead packing r: tape & reel operating temperature range i: industry standard package type v: sot23 j: tdfn u:usp output voltage option * eup7201-vout1/vout2 viri
eup7201 ds7201 ver 1.5 oct. 2007 5 absolute maximum ratings t supply input voltage --------------------------------------------------------------------------------------- 6v t power dissipation, p d @ t a =25 j sot23-6 ------------------------------------------------------------------------------------------------------ 0.4w t package thermal resistance sot23-6, ja ------------------------------------------------------------------------------------------------- 250c/w t lead temperature (soldering,10 sec .) -------------------------------------------------------------------- 260c t storage temperature range -------------------------------------------------------------------------------- -65c to 150c t esd rating hbm ---------------------------------------------------------------------------------------------------------- 2kv recommended operating conditions t supply input voltage ----------------------------------------------------------------------------------------- 2.5v to 5.5v t enable input voltage ----------------------------------------------------------------------------------------- 0v to 5.5v t junction temperature range ------------------------------------------------------------------------------- -40c to 125c electrical characteristics v in = (v out +0.5v) or v in =2.5v whichever is greater, c in =c out =1f , en1 = en2= v in . t a =25c. unless otherwise noted eup7201 symbol parameter conditions min typ max. unit i l =30ma -2 2 v out output voltage i l =30ma, t a =-40c~85c. -3 3 % i max maximum output current continuous ,t a =-40c~85c. 150 ma i lim current limit output grounded (steady state) 180 300 ma no load (both ldos) 110 180 a i g quiescent current i out =150ma (both ldos) 260 a i out =30ma 30 mv v drop dropout voltage i out =100ma, t a =-40c~85c. 80 220 mv g v out load regulation 1ma< i out < 150ma 13 60 mv g v line line regulation v in =v out +0.5v to 5.5v i out =1ma 0.02 0.2 %/v v ih en input high threshold v in =2.5v to 5.5v, t a =-40c~85c. 1.6 v v il en input low threshold v in =2.5v to 5.5v, t a =-40c~85c. 0.4 v i sd en input bias current en=gnd or v in 0.1 a i gsd shutdown supply current en1=en2=gnd 0.01 1 a t sd thermal shutdown temperature 155 j g t sd thermal shutdown hysteresis 15 j psrr ripple rejection rate v in =(v out +1v) dc+0.5v p-p ac i out =1ma, f=1khz 60 db
eup7201 ds7201 ver 1.5 oct. 2007 6 typical operating characteristics
eup7201 ds7201 ver 1.5 oct. 2007 7
eup7201 ds7201 ver 1.5 oct. 2007 8
eup7201 ds7201 ver 1.5 oct. 2007 9
eup7201 ds7201 ver 1.5 oct. 2007 10 application note external capacitors like any low-dropout regulator, the eup7201 requires external capacitors for regulator stability. the eup7201 is specifically designed for portable applications requiring minimum board space and smallest components. these capacitors must be correctly selected for good performance. input capacitor an input capacitance of 1 f is required between the eup7201 input pin and ground (the amount of the capacitance may be increased without limit). this capacitor must be located a distance of not more than 1cm from the input pin and returned to a clean analog ground. any good quality ceramic, tantalum, or film capacitor may be used at the input. if a tantalum capacitor is used at the input, it must be guaranteed by the manufacturer to have a surge current rating sufficient for the application. there are no requirements for the esr on the input capacitor, but tolerance and temperature coefficient must be considered when selecting the capacitor to ensure the capacitance will be 1 f over the entire operating temperature range. output capacitor the eup7201 is designed specifically to work with very small ceramic output capacitors. a ceramic capacitor (temperature characteristics x7r, x5r, z5u, or y5v) in 1 to 22 f range with 5m ? to 500m ? esr range is suitable in the eup7201 application circuit. the output capacitor must meet the requirement for minimum amount of capacitance and also have an esr (equivalent series resistance) value which is within a stable range (5m ? to 500m ? ) no-load stability the eup7201 will remain stable and in regulation with no external load. this is specially important in cmos ram keep-alive applications. capacitor characteristics the eup7201 is designed to work with ceramic capacitors on the output to take advantage of the benefits they offer: for capacitance values in the range of 1 f to 4.7 f range, ceramic capacitors are the smallest, least expensive and have the lowest esr values (which makes them best for eliminating high frequency noise). the esr of a typical 1 f ceramic capacitor is in the range of 20m ? to 40m ? , which easily meets the esr requirement for stability by the eup7201. the ceramic capacitor?s capacitance can vary with temperature. the capacitor type x7r, which operates over a temperature range of -55c to +125c, will only vary the capacitance to within 15%. most large value ceramic capacitors ( f) are manufactured with z5u or y5v temperature characteristics. their capacitance can drop by more than 50% as the temperature goes from 25c to 85c. therefore, x7r is recommended over z5u and y5v in applications where the ambient temperature will change significantly above or below 25c. on/off input operation the eup7201 is turned off by pulling the v en pin low, and turned on by pulling it high. if this feature is not used, the v en pin should be tied to v in to keep the regulator output on at all time. to assure proper operation, the signal source used to drive the v en input must be able to swing above and below the specified turn-on/off voltage thresholds listed in the electrical characteristics section under v il and v ih .
eup7201 ds7201 ver 1.5 oct. 2007 11 packaging information sot23-6 symbols millimeters inches min. max. min. max. a - 1.45 - 0.057 a1 0.00 0.15 0.000 0.006 b 0.30 0.50 0.012 0.020 d 2.90 0.114 e1 1.60 0.063 e 0.95 0.037 e 2.60 3.00 0.102 0.118 l 0.30 0.60 0.012 0.024
eup7201 ds7201 ver 1.5 oct. 2007 12 tdfn-6 millimeters inches symbols min. max. min. max. a 0.70 0.80 0.028 0.031 a1 0.00 0.05 0.000 0.002 b 0.30 0.50 0.012 0.020 d 2.90 3.10 0.114 0.122 d1 2.30 0.090 e 2.90 3.10 0.114 0.122 e1 1.50 0.059 e 0.95 0.037 l 0.38 0.58 0.015 0.023 detail a
eup7201 ds7201 ver 1.5 oct. 2007 13 usp-6 millimeters inches symbols min. max. min. max. a 0.70 0.80 0.028 0.031 a1 0.00 0.05 0.000 0.002 b 0.10 0.30 0.004 0.012 b1 0.20 0.40 0.008 0.016 d 1.70 1.90 0.067 0.075 d1 1.50 0.059 e 1.90 2.10 0.075 0.083 e1 0.90 0.035 e 0.50 0.020 l 0.15 0.35 0.006 0.014

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