View lm3490 datasheet:

June 2007 LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF General Description Key Specifications The LM3490 is an integrated linear voltage regulator. It fea- ■ 30V maximum input for operation tures operation from an input as high as 30V and a guaran- 1.2V guaranteed maximum dropout over full load and ■ teed maximum dropout of 1.2V at the full 100 mA load. temperature ranges Standard packaging for the LM3490 is the 5-lead SOT-23 100 mA guaranteed load current ■ package. A logic-controlled ON/OFF feature makes the ±5% guaranteed output voltage tolerance over full load ■ LM3490 ideal for powering subsystems ON and OFF as need- and temperature ranges ed. ■ -40 to +125°C junction temperature range for operation