eup7220 ds7220 v e r1.0 jan. 2010 1 dual, low-noise, high-psrr, 150ma ldo without bypass capacitor description the eup72 2 0 is a dual-channel low noise, low dropout. high psrr, high accuracy cmos voltage regulator. performance features include low output noise, high ripple rejection ratio, low dropout and very fast turn-on times. the eup7220 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 eup7220 is available in small 1.6mm1.6mm tdfn-6 and tsot23-6 packages. feature s z 15 0 ma output current (per ldo) z 30v rms low no ise output z 70db psrr at 1khz z low 50ua quiescent current (both ldos active) z 2.5v to 5.5v input voltage range z 190mv dropout at 150ma load z dual shutdown pins control each output z current limiting and thermal protection z short circuit protection z available in tdfn-6 1.6mm 1.6mm and tsot23-6 packages z rohs compliant and 100% lead (pb)-free halogen-free applications z cell u lar phones z camera, video recordes z pdas z hand-held equipment typical application cir cuit figure 1. v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 2 block diagram figure 2. pin configurations package type pin configurations package type pin configurations tsot23-6 tdfn-6 pin description pin tsot23-6 tdfn-6 description en1 1 3 enable input(channel1). active high input. logic high=on; logic low=off; do not leave floating. vin 2 2 supply input. en2 3 1 enable input(channel2). active high input. logic high=on; logic low=off; do not leave floating. v out2 4 6 channel 2 output voltage. gnd 5 4 ground. v out1 6 5 channel 1 output voltage. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 3 ordering information order number package type marking operating temperature range eup7220-1.3/2.8oir1 tsot23-6 xxxxx arbp -40 c to +85c eup7220-1.5/2.8oir1 tsot23-6 xxxxx ar2c -40 c to +85c eup7220-1.8/2.8oir1 tsot23-6 xxxxx ar2a -40 c to +85c eup7220-1.8/3.3oir1 tsot23-6 xxxxx ar2h -40 c to +85c eup7220-2.8/1.2oir1 tsot23-6 xxxxx ar2p -40 c to +85c eup7220-2.8/3.3oir1 tsot23-6 xxxxx ar2l -40 c to +85c eup7220-3.0/3.0oir1 tsot23-6 xxxxx ar2n -40 c to +85c eup7220-3.0/3.3oir1 tsot23-6 xxxxx ar2t -40 c to +85c eup7220-3.3/3.3oir1 tsot23-6 xxxxx ar2j -40 c to +85c eup7220-1.8/2.8jir1 tdfn-6 xxx d2a -40 c to +85c eup7220-2.8/1.2jir1 tdfn-6 xxx d2p -40 c to +85c eup7220-3.3/3.3jir1 tdfn-6 xxx d2j -40 c to +85c eup7220 - ???? / ???? ?? ?? ?? ?? lead free code 1: lead free, halogen free 0: lead packing r: tape & reel operating temperature range i: industry standard package type o: tsot j: tdfn output voltage option * eup7220-vout1/vout2 oiri n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 4 absolute maximum ratings (1) ? supply input voltage ---------------------------------------------------------------------- 6v ? junction temperature ---------------------------------------------------------------------- 150c ? storage temperature range ---------------------------------------------------- -65c to +150c ? lead temperature -------------------------------------------------------------------------- 260c ? thermal resistance ja (tsot23-6) ------------------------------------------------- 200c/w ? thermal resistance ja (tdfn-6) ---------------------------------------------------- 76c/w ? esd rating human body model --------------------------------------------------------------------- ? 2kv recommend operating conditions (2) ? v in ----------------------------------------------------------------------------------- 2.5v to 5.5v ? enable input voltage ------------------------ ------------------------------------- 0v to 5.5v ? operating temperature range ------------------------------------------------ -40c to +85c note (1): stress beyond those listed under ?absolute maximum ratings? may damage the device. note (2): the device is not guaranteed to function outside the recommended operating conditions. electrical characteristics v in =(v out +1v) or v in =2.5v whichever is greater, c in =c out =1 | f, en1=en2=v in , t a =25c. unless otherwise noted. eup7220 symbol parameter conditions min. typ. max. unit input voltage 2.5 5.5 v i out =1ma to 30ma, t a =25c -2 2 v out output voltage i out =1ma to 30ma,t a =-40c?? 85c -3 3 % i max maximum output current continuous,t a =-40???? 85c 150 250 i lim current limit v out =v out (nom)90% 180 300 ma i g quiescent current no load (two channels) 50 a v drop dropout voltage (note 3) i out =150ma 190 ? v out load regulation 1ma eup7220 ds7220 ver1.0 jan. 2010 5 typical operating characteristics n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 6 typical operating characteristics (continued) n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 7 typical operating characteristics (continued) n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 8 typical operating characteristics (continued) n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 9 application note external capacitors like any low-dropout regulator, the eup7220 requires external capacitors for regulator stability. the eup7220 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 1f or higher is required between the eup7220 input pin and ground (the amout 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 1f over the entire operating temperature range. output capacitor the eup7220 is designed specifically to work with very small ceramic output capacitors. a ceramic capacitor (temperature charac teristics x7r or x5r) in 1f to 10f range with 5m ? to 500m ? esr range is suitable in the eup7220 application circuit.the output capacitor must meet the requirement for minimum amount of capacitance to maintain good loop stability and phase margin. no-load stability the eup7220 is stable without any external load. this is specially important for cmos ram keep-alive applications. on/off input operation the eup7220 is turned off by pulling the en pin low, and turned on by pulling it high. if this pin is floating, the regulator is uncertainty. to assure proper operation, the signal source used to drive the en input must be able to swing above and below the specified turn-on/off voltage thresholds listed in the electrical characteristics. when en is logic low, output is internally discharged to gnd through a 50 0 ? resistor. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 10 packaging information tsot23-6 millimeters inches symbols min. max. min. max. a - 1.00 - 0.039 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 0.3 0.60 0.012 0.024 n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7220 ds7220 ver1.0 jan. 2010 11 tdfn-6 millimeters inches symbols min. nom max. min. nom max. a 0.70 0.75 0.80 0.028 0.030 0.031 a1 0.00 0.02 0.05 0.000 0.001 0.002 b 0.20 0.25 0.30 0.008 0.010 0.012 d 1.50 1.60 1.70 0.059 0.629 0.067 d2 1.00 ref 0.039 ref e 1.50 1.60 1.70 0.059 0.063 0.067 e2 0.60 ref 0.024 ref e - 0.50 - - 0.020 - l 0.19 0.24 0.29 0.007 0.009 0.011 n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
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