advanced power electronics corp. 150ma ultra low dropout positive adjustable and fixed regulators features description stable with 2.2uf low esr ceramic capacitor 2% voltage reference accuracy wide operating range: 4.5v ~ 25v 5ua quiescent current in shutdown current limit and thermal shutdown logic input enable pin rohs compliant & halogen free sot-89, esop-8, j-lead 2021-8, sot-23-5l & tsot-23-5l package applications laptop, notebook & palmtop computers battery powered equipments pcmcia vcc & vpp regulator consumer electronics high efficiency linear power supplies data and specifications subject to change without notice 201104228 APU8850 typical application ordering information 1 the APU8850 device is an efficient linear voltage regulator with better than 2% initial voltage accuracy, very low dropout voltage and very low ground current designed especially for hand held, battery powered applications. other features of the device are: ttl compatible enable/shutdown control input, current limiting and thermal shutdown. the APU8850 is available in fixed and adjustable output voltage versions in a small sot-23-5l, tsot-23-5l, j-lead 2021-8, esop-8 & sot-89 package. figure 1 - typical application of the APU8850 adjustable voltage regulator. figure 2 - typical application of the APU8850-33 fixed voltage regulator. vin gnd en vout adj enable vin vout vo= 1.25 x (1+r1/r2) c2 2.2uf c1 2.2uf r1 r2 + + vin gnd en vout cbyp enable vin vout=3.3v c2 2.2uf c1 2.2uf + + + c3 1000pf APU8850x-xx-hf y5 : sot-23-5l ty5 : tsot-23-5l u : j-lead 2021-8 g : sot-89 mp : esop-8 package output voltage blank : adj 15 : 1.5v 18 : 1.8v 25 : 2.5v 28 : 2.8v 30 : 3.0v 33 : 3.3v 50 : 5.0v halogen free
advanced power electronics corp. APU8850 absolute maximum ratings (t a =25 o c, unless otherwise specified.) input voltage (v in ) ----------------------------------------- - 27v enable input voltage (v en ) ------------------------------ - 27v storage temperature range (t st ) -------------------- - -65 to 150 o c operating junction temperature range (t j ) ------- - -40 to 85 o c thermal resistance junction to ambient (rth ja ) sot-23-5l/tsot-23-5l 256 o c/w sot-89 250 o c/w esop-8 150 o c/w j-lead 2021-8 300 o c/w package information electrical specifications unless otherwise specified, these specifications apply over c in =c o =2.2f, i o =100ua, v in(min) =4.5v, c byp =470pf (for fixed voltage devices), v en =2v and t a =25 o c. typical values refer to t a =25 o c. low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. parameter sym test condition min typ max units reference voltage vo -2 - 2 % line regulation ? v i v o + 2v advanced power electronics corp. APU8850 pin descriptions pin symbol pin description the input pin of the regulator. typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum drop out voltage during the load transient response. this pin must always be higher than vout by at least the amount of the dropout voltage and some margin in order for the device to regulate properly. ground pin. this pin must be connected to the lowest potential in the system and all other pins must be at higher potential with respect to this pin. enable pin. a low signal or left open on this pin shuts down the output. this pin must be tied hi or to vin for normal operation. adj (adjustable only) a resistor divider from this pin to the vout pin and ground sets the output voltage. c byp (fixed only) a 470 to 1000pf bypass capacitor connected to this pin reduces the output noise. the output of the regulator. a minimum of 2.2uf with max esr of 1 capacitor must be connected from this pin to ground to insure stability. block diagram 3 vin gnd en vout figure 3 - APU8850y5 adjustable output block diagram. figure 4 - APU8850y5 fixed mode output block diagram. + - thermal shutdown current limit + 1 4 2 5 3 vin cbyp gnd vout en + - thermal shutdown current limit + 1 4 2 5 3 vin adj gnd vout en
advanced power electronics corp. APU8850 typical performance characteristics load transient vin=5v ven=5v vout=3.3v 4 vin=5v ven=5v vout=3.3v vin=4.5v ,vout=3.3v iout=10ma~200ma output voltage vs. temperature 3.3 3.31 3.32 3.33 3.34 3.35 3.36 3.37 -40-200 20406080100 temperature( ) output voltage iout=0ma iout=10ma iout=20ma adj voltage vs. temperature 1.24 1.244 1.248 1.252 1.256 1.26 1.264 -40-200 20406080100 temperature( ) adj voltage iout=0ma iout=10ma iout=20ma i out v out
advanced power electronics corp. APU8850 typical performance characteristics quiescent current vs. input voltage vin=4.5v , vout=3.3v , iout=10ma~200ma vin=4.5v~20v , vout=3.3v output voltage vs. input voltage vin=4.5v , vout=3.3v , iout=10ma quiescent current vs. temperature vin=4.5v~20v , vout=3.3v output voltage vs. output current 5 vin=4.5v , vout=3.3v , iout=10ma~200ma dropout voltage vs. temperature vin=4.5v , vout=3.3v dropout voltage vs. output current 0 0.2 0.4 0.6 0.8 1 1.2 0 20 40 60 80 100 120 140 160 180 200 output current(ma) dro p out volta g e ( v ) 3.25 3.26 3.27 3.28 3.29 3.3 3.31 3.32 20 40 60 80 100 120 140 160 180 200 output current(ma) o utput voltage(v) 0 50 100 150 200 250 300 350 4.5 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 input voltage(v) quiescent current(ua) 0 50 100 150 200 250 300 -40-20 0 20 406080100125 temperature('c) quiescent current(ua) 3.305 3.306 3.307 3.308 3.309 3.31 3.311 3.312 4.5 5 6 7 8 9 1011121314151617181920 input voltage(v) output voltage(v) iout=0ma iout=10m a iout=20m a 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -40-20 0 20 406080100125 temperature('c) dropout voltage(v) iout=0m a iout=10m a
advanced power electronics corp. APU8850 marking information esop-8 sot-23-5l / tsot-23-5l j-lead 2021-8 sot-89 6 part number package code 8850mp-&& ywwsss output voltage : date code (ywwsss) y
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