r1131x series low voltage 300ma ldo no.ek-116-100119 cmos ldo regulator the r1131x series are cmos-based ldo regulators featuring 300ma output. the input voltage (v in ) is as low as min. 1.4v and the output voltage can be set from 0.8v. the ce pin can switch the regulator into standby mode. ceramic capacitors can be used. (v out > = 1.0v) features ? supply current (i ss ) typ. 80 a (v in =set v out +1v, v out < 1.8v) typ. 60 a (same as above, v out > = 1.8v) ? standby current (i standby ) typ. 0.1 a (same as above, in standby) ? dropout voltage (v dif ) typ. 0.23v (i out =300ma, v out =2.8v) ? ripple rejection (rr) typ. 65db (f=1khz) ? input voltage range (v in ) 1.4v to 6.0v ? output voltage range (v out ) 0.8v to 3.3v (internally fixed) ? output voltage accuracy 2% ? temp. coeff. of output voltage typ. 100ppm/ c ? line regulationtyp. 0.01%/v ? fold-back protection circuitcurrent limit typ. 50ma ? auto-discharge function d version ? packages son-6, sot-23-5, hson-6 ? ceramic capacitors can be used. 1 f or more (v out > = 1.0v) block diagrams r1131xxxxa ( ce pin "l" active) v out gnd v dd ce vref current limit + - r1131xxxxb (ce pin "h" active) v out gnd v dd ce vref current limit + - r1131xxxxd (with auto-discharge function) v out gnd v dd ce vref current limit + - selection guides package quantity per reel part no. son-6 3,000 pcs r1131d . xx . 1 . ? -tr-f sot-23-5 3,000 pcs r1131n . xx . 1 . ? -tr-f hson-6 3,000 pcs r1131d . xx . 2 . ? -tr-f . xx . : specify the output voltage within the range 0.8v ( . 08 . ) to 3.3v ( . 33 . ) in 0.1v steps. . ? . : select the polarity of the ce pin from ( . a . ) "l" active, ( . b . ) "h" active or ( . d . ) "h" active with auto-discharge function . packages (top view) t ypical characteristic son-6 sot-23-5 hson-6 6 5 4 1 2 3 ? 1 3 5 4 2 1 3 6 4 2 5 ? 1 v dd 2 nc 3 v out 4 nc 5 gnd 6 ce or ce 1 v dd 2 gnd 3 ce or ce 4 nc 5 v out 1 v dd 2 nc 3 v out 4 nc 5 gnd 6 ce or ce r1131x33xx dropout voltage vs. output current 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 50 100 150 200 250 300 dropout voltage v dif (v) output current i out (ma) 85 c 25 c -40 c ? ) the tab and tab suspension leads on back side are substrate level (gnd). applications ? power source for hand-held communication equipment, cameras, and vcrs ? power source for home appliances ? power source for battery-powered equipment
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