maximum output current: 300ma typ. output voltage range: 0.9v 5.0v, selectable in 0.1v steps high accuracy: 2 typ. dropout voltage: 150mv@100ma 3.0v typ. excellent line regulation: 0.1 /v built-in current limiter built-in short circuit protection static safety, 2kv@hbm tc: 100ppm/ low esr capacitor: ceramic compatible ? application low dropout voltage 300ma cmos ldo regulator LR6218 series 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 LR6218 series are a group of positive voltage regulators manufactured by cmos technologies with high ripple rejection, extremely low power consump- tion and low dropout voltage, which provide large output currents even when the difference of the i nput-output voltage is small. each of the lr 6218 series consists of a high-precision vo ltage reference, an error correction circuit, and a current limit- ed output driver. thus the series are very suitable for the battery-powered equip- ments, 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 LR6218 leshan radio company, ltd. 1/7
? pin configuration LR6218e pin output sequence can be ordered by customer sot23-5 pin number pin name function 1 v in power input pin 2 v ss ground 3 ce chip enable pin 4 nc no connection 5 v out output pin sot89-5 pin number pin name function 1 v out output pin 2 v ss ground 3 nc no connection 4 ce chip enable pin 5 v in power input pin ? absolute maximum ratings parameter symbol rating unit input voltage v in 8 v output current i out 600 ma output voltage v out vss-0.3~vout+0.3 v power dissipation sot23 pd 250 mw sot89 pd 500 mw 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. 2/7
? electrical characteristics LR6218 series (c in = c out = 1 f 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 5 a standby current i standby v ce = v ss 0.1 a output current i out 300 ma dropout voltage (note 3) v dif1 i out = 40ma 60 mv v dif2 i out = 100ma 150 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 6v 0.1 %/v output voltage temperature characteristics ? v out ? t * v out i out = 40ma -40 t +85 100 ppm power supply ripple rejection psrr i out =10ma f = 1khz 60 db short current i short v out = v ss 50 ma current limit i lim v in = v out +1v 600 ma input voltage v in 2 6 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 ( i.e. the output voltage when v in = (v out +1.0v) and maintain a certain i out value). 3. v diff the difference of output voltage a nd input voltage when input voltage is decreased gradually till output voltage equals to 98% of v out (e). leshan radio company, ltd. 3/7
? typical application circuit LR6218e sot23-5 ? typical performance characteristics (1) output voltage vs input voltage (2) input transient response LR6218e30p LR6218e30p LR6218e30p LR6218e30p leshan radio company, ltd. 4/7
(3) input transient response (4) temperature LR6218e30p LR6218e30p LR6218e30p leshan radio company, ltd. 5/7
? packaging information sot-23-5 leshan radio company, ltd. 6/7
sot-89-5 leshan radio company, ltd. 7/7
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