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LM3490IM5X-3.3 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM3490IM5X-3.3 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 10 page LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF General Description The LM3490 is an integrated linear voltage regulator. It fea- tures operation from an input as high as 30V and a guaran- teed maximum dropout of 1.2V at the full 100 mA load. Stan- dard packaging for the LM3490 is the 5-lead SOT-23 package. A logic-controlled ON/OFF feature makes the LM3490 ideal for powering subsystems ON and OFF as needed. The 5, 12, and 15V members of the LM3490 series are in- tended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3490 series devices makes them a nice fit in many appli- cations where the 2 to 2.5V dropout of LM78LXX series de- vices precludes their (LM78LXX series devices) use. The LM3490 series features a 3.3V member. The SOT pack- aging and quasi low dropout features of the LM3490 series converge in this device to provide a very nice, very tiny 3.3V, 100 mA bias supply that regulates directly off the system 5V±5% power supply. Key Specifications n 30V maximum input for operation n 1.2V guaranteed maximum dropout over full load and temperature ranges n 100 mA guaranteed load current n ±5% guaranteed output voltage tolerance over full load and temperature ranges n −40 to +125˚C junction temperature range for operation Features n 3.3, 5, 12, and 15V versions available n Logic-controlled ON/OFF n Packaged in the tiny 5-lead SOT-23 package Applications n Tiny alternative to LM78LXX series and similar devices n Tiny 5V±5% to 3.3V, 100 mA converter n Post regulator for switching DC/DC converter n Bias supply for analog circuits Typical Application Circuit Connection Diagram DS100071-2 DS100071-1 Top View SOT-23 Package 5-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package Package Code MA05B(Note 1) June 1999 © 1999 National Semiconductor Corporation DS100071 www.national.com |
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