S-T111 series

This is the description of S-T111 series: The S-T111 Series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on CMOS technology. A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor. An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the conventional CMOS process, a larger variety of capacitors are available, including small ceramic capacitors. A small SOT- 23-5 package realizes high-density mounting.

And these are the S-T111 series features: Firstly, the output voltage is from 1.5 V to 5.5 V, selectable in 0.1 V steps. Secondly, thehigh-accuracy output voltage is ±1.0%. Thirdly, thelow dropout voltage is 190 mV typ (3.0 V output product, IOUT 100 mA). Fourthly, thelow current consumption is 50 (during operation)Fifthly, thehigh peak current capability is 150 mA output is possible. Sixthly,built-in on/off circuit ensures long battery life. Seventhly,Low ESR capacitor can be used. Eighthly, thehigh ripple rejection is 80 db typ (@ 1.0 khz). Ninethly, thebuilt-in overcurrent protector is overcurrent of output transistor can be restricted. And at last,small package is sot-23-5.

And these are the maximum ratings of S-T111 series: firstly, the input voltage is from0.3 to 7 v. Secondly; the output voltage is from 0.3 to 0.3v. Thirdly, the power dissipation is 300 mw. Fourthly,  the operating ambient temperature is from 40 to 85 °c. And at last, the storage ambient temperature is from40 to 125°c.