standby current : less than 0.1a (typ.) maximum output current 250ma typ output voltage range 1.4v 6.0v selectable in 0.1v steps high accuracy 2 typ dropout voltage 160mv@100ma 3.0v typ excellent line regulaion 0.1 /v high ripple rejection : 62db (10khz) buit-in chip current limit & short protect circuit static safety: 2kv@hbm tc 100ppm/ ? application battery powered systems portable instrumentations reference voltage sources radio control s y stems portable/palm com p uters portable consumer e q ui p ments ? feature ? introduction the LR6209 series are a group of positive voltage regulators manufactured by cmos technologies with high ripple rejection, extremely low power consumption and low dropout voltage, which provide large output currents even when the difference of the input-output voltage is small. each of the LR6209 series consists of a high-precision voltage reference, an error correction circuit, and a current limited output driver. thus the series are very suitable for the battery-powered equipments, such as portable/palm computers, portable consumer equipments, industry equipments and so on, which want to prolong the using life of the battery. ? block diagram ? order information leshan radio company, ltd. lr 6209 1/5
? pin configuration LR6209a pin number sot23-3 sot89-3 to92 m p p1 t pin name function 1 1 1 1 vss ground 2 3 2 3 vout output 3 2 3 2 vin power input LR6209b pin number sot23-5 pin name function 1 vin power input 2 vss ground 3 ce chip enable pin 4 nc no connection 5 vout output pin ? absolute maximum ratings parameter symbol description unit input voltage v in 10 v output current i out 500 ma output voltage v out vss-0.3~vout+0.3 v sot23 pd 250 mw sot89 pd 500 mw power dissipation to92 pd 500 mw operating temperature t opr -40~+85 storage temperature t stg -55~+125 soldering temperature & time t solder 260 , 10s leshan radio company, ltd. lr 6209 2/5
? electrical characteristics LR6209 series ta=25 parameter symbol conditions min. typ. max. units output voltage v out (e) (note 2) i out =40ma v in = v out +1v v out *0.98 v out v out *1.02 v supply current i ss v ce =v in =vout+1v 3.0 a standby current i standby v ce =v ss 0.1 a output current iout 250 ma v dif1 i out =40ma 80 mv dropout voltage (note 3) v dif2 i out =100ma 160 mv load regulation ? v out v in = v out +1v, 1ma i out 100ma 10 mv line regulation ? v out ? v in * v out i out =40ma v out +1v v in 10v 0.1 %/v output voltage temperature characteristics ? v out ? t * v out i out =40ma -40 t +85 100 ppm short current i short v out =v ss 100 ma input voltage v in 8 v ce "high" voltage v ce h 1.0 v in v ce "low" voltage v ce l 0.2 v note : 1. v out specified output voltage. 2. v out (e) effective output voltage ( ie. the output voltage when v in = (v out +1.0v) and maintain a certain i out value). 3. v dif the difference of output voltage and input voltage when input voltage is decreased gradually till output voltage equals to 98% of v out (e). ? typical application circuit LR6209a series LR6209b series leshan radio company, ltd. lr 6209 3/5
? packaging information sot-23 sot-89 dimensions in millimeters symbols min nom max a 1.40 1.50 1.60 b 0.36 0.42 0.48 b1 0.41 0.47 0.53 b2 1.40 1.60 1.75 c 0.38 0.40 0.43 d 4.40 4.50 4.60 e 4.25 e1 2.40 2.50 2.60 1.40 1.50 1.60 l 1.80 l1 0.40 leshan radio company, ltd. lr 6209 4/5
to92 leshan radio company, ltd. lr 6209 5/5
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