1 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a 150m a ultra low dropout linear regulator ? general description the AX1116A 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 AX1116A is available adjustable output voltage versions in a small sot - 23 5 - pin package. ? features - wide operating range: 4.5v ~ 25 v - adjustable output. - 2% voltage reference accuracy - 5ua shutdown current - stable with 2.2 u f ceramic capacitor - current - limit and thermal shutdown protection - logic input enable pin . - available in sto - 23 - 5l , pb - free package.
2 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? b lock d iagram ? pin assignment the package of AX1116A is sot - 23 - 5l ; the pin assignment is given by: name description vin 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 v out by at least the amount of the dropout voltage and some margi n in order for the device to regulate properly. adj a resistor divider from this pin to the vout pin and ground sets the output voltage. en enable pin. a low signal or left open on this pin shuts down the output. this pin must be tied h igh or to v in for normal operation. vout the output of the regulator. a minimum of 2.2 u f with max esr of 1 gnd ground pin. this pin must be connected to the lowest potential in the system and all o ther pins must be at higher potential with respect to this pin. current limit - + vin vout gnd error amp vref = 1 . 25 v thermal shutdown enable en adj ( t o p v i e w ) 3 2 5 4 1 v i n g n d e n a d j v o u t
3 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? order/m arking information order information top marking ? a bsolute m aximum r atings (t a =25 c ) characteristics symbol rating unit v in pin voltage v in - 0.3 to 27 v en pin voltage v en - 0.3 to v in v power dissipation pd 250 m w storage temperature range t st - 65 to +150 c operating junction temperature r ange t op - 4 0 to + 150 c thermal resistance from junction to case jc 180 c /w thermal resistance from junction to ambient ja 250 c /w note: ja is measured with the pcb copper area of approximately 1 in 2 (multi - layer). that need connect to gnd pin. a x 1 1 1 6 a x x p a c k a g e b : s o t - 2 3 - 5 l p a c k i n g b l a n k : b a g a : t a p i n g r a x 1 1 1 6 a w w : 0 1 ~ 2 6 ( a ~ z ) 2 7 ~ 5 2 ( a ~ z ) y e a r : 1 = 2 0 1 1 2 = 2 0 1 2 i d c o d e : i n t e r n a l m y w x
4 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? e lectrical c haracteristics t a =25 c , c in =c out =2.2 u f, v in =v out + 1v characteristics symbol conditions min typ max units v in supply voltage v in 4.5 - 25 v reference voltage v fb 1.225 1.250 1.275 % a dj pin current i adj v i n =2.5v , v out = v adj - 0.1 - ua line regulation v l ine v out + 1v 5 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? a pplication c ircuit o n o f f v i n v o u t g n d i n c o u t c a x 1 1 1 6 a b a 2 . 2 u f 2 . 2 u f v o u t = 2 . 5 v e n r 1 r 2 a d j v o u t = 1 . 2 5 * ( 1 + r 1 / r 2 ) v i n = 5 v 2 0 0 2 0 0 r 2 s u g g e s t t o b e 2 0 0 ~ 3 0 0
6 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? t ypical characteristics
7 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? typical characteristics (continu ed ) load transient v in =5v v out =3.3v i out =0~150ma start up v in =5v v out =3.3v i out =150ma
8 / 8 axelite confidential materials, do not copy or distribute without written consent . rev. 1. 5 apr . 06 , 20 1 2 ax1116 a ? p ackage o utlines symbol dimensions in millimeters dimensions in inches min. nom. max. min. nom. max. a - - 1.45 - - 0.057 a1 0.00 0.08 0.15 0 0.003 0.006 a2 0.90 1.10 1.30 0.035 0.043 0.051 b 0.30 0.40 0.50 0.012 0.016 0.020 c 0.08 0.15 0.22 0.003 0.006 0.009 d 2.70 2.90 3.10 0.106 0.114 0.122 e1 1.40 1.60 1.80 0.055 0.063 0.071 e 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 0.45 0.60 0.012 0.018 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e1 1.9 bsc 0.075 bsc e 0.95 bsc 0.037 bsc 0 o 4 o 8 o 0 o 4 o 8 o 1 5 o 10 o 15 o 5 o 10 o 15 o 2 5 o 10 o 15 o 5 o 10 o 15 o jedec outline: mo - 178 aa l e 1 e 1 e d a 2 a 1 b ( 5 x ) a detal a l 1 1 ( 4 x ) 2 ( 4 x ) e gauge plane c detal a
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