smd type ic www.kexin.com.cn 1 smd type integrate circuit features 1.4v maximum dropout at full load current fast transient response output current limiting built-in thermal shutdown good noise rejection 3-terminal adjustable or fixed 1.5v, 1.8v, 1.9v,2.5v, 3.3v, 5.0v block diagram 1a low dropout positive adjustable or fixed-mode regulator KMA1117 (lma1117) 1 adj(gnd) 2 vout 3vin absolute maximum ratings ta = 25 parameter symbol rating unit dc supply voltage v in -0.3 to 12 v power dissipation p d internally limited thermal resistance junction-to-ambient ja 300 /w thermal resistance junction-to-case * jc 100 /w operating junction temperature range t op 0 to +150 storage temperature t st -65 to +150 * control circuitry/power transistor
www.kexin.com.cn 2 smd type ic smd type integrate circuit electrical characteristics ta = 25 testconditons min typ max unit reference voltage KMA1117-adj t j =25 ,(v in -o ut )=1.5v,i o =10ma 1.225 1.250 1.275 v KMA1117-1.5 i out = 10ma, t j =25 ,3v v in 12v 1.470 1.500 1.530 v KMA1117-1.8 i out = 10ma, t j =25 ,3.3v v in 12v 1.764 1.800 1.836 v KMA1117-1.9 i out = 10ma, t j =25 ,3.3v v in 12v 1.862 1.900 1.938 v KMA1117-2.5 i out = 10ma, t j =25 ,4v v in 12v 2.450 2.500 2.550 v KMA1117-3.3 i out = 10ma, t j =25 ,4.8v v in 12v 3.235 3.300 3.365 v KMA1117-5.0 i out = 10ma, t j =25 ,6.5v v in 12v 4.900 5.000 5.100 v line regulation KMA1117-xxx i o =10ma,v out +1.5v v in 12v, t j =25 0.2 % KMA1117-adj v in =3.3v,v adj =0,0ma i o 1a,t j =25 1% KMA1117-1.5 v in =3v,0ma i o 1a,t j =25 12 15 mv KMA1117-1.8 v in =3.3v,0ma i o 1a,t j =25 15 18 mv KMA1117-1.9 v in =3.3v,0ma i o 1a,t j =25 16 19 mv KMA1117-2.5 v in =4v,0ma i o 1a,t j =25 20 25 mv KMA1117-3.3 v in =5v,0ma i o 1a,t j =25 26 33 mv KMA1117-5.0 v in =8v,0ma i o 1a,t j =25 40 50 mv dropout voltage (v in -v out ) KMA1117-xxx i out =1a, v out =0.1%v out 1.3 1.4 v current limit KMA1117-xxx (v in -v out ) = 5v 1. 1 a minimum load current KMA1117-xxx 0 tj 125 510ma t a =25 , 30ms pulse 0.008 0.04 %/w f=120hz,c out =25uf tantalum, i out =1a KMA1117-xxx v in =v out +3v 60 70 db temperature stability i o =10ma 0.5 % parameter output voltage ripple rejection load regulation thermal regulation KMA1117 (lma1117)
www.kexin.com.cn 3 smd type ic smd type integrate circuit typical characteristics fig.1 dropout voltage vs output current fig.2 load regulation vs temperature fig.3 percent change in out put voltage vs temperature fig.4 line regulation fig.5 line transient response fig.6 load transient response KMA1117 (lma1117)
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