Datenblatt-Suchmaschine für elektronische Bauteile |
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LD2981ABM25TR Datenblatt(PDF) 1 Page - STMicroelectronics |
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LD2981ABM25TR Datenblatt(HTML) 1 Page - STMicroelectronics |
1 / 23 page July 2008 Rev 14 1/23 23 LD2981ABxx LD2981Cxx Ultra low drop voltage regulators with inhibit low ESR output capacitors compatible Features ■ Stable with low ESR ceramic capacitors ■ Ultra low dropout voltage (0.17 V typ. at 100 mA load, 7 mV typ. at 1 mA load) ■ Very low quiescent current (80 µA typ. at no load in on mode; max 1 µA in off mode) ■ Guaranteed output current up to 100mA ■ Logic-controlled electronic shutdown ■ Output voltage of 2.5; 3.0; 3.3; 5.0 V ■ Internal current and thermal limit ■ ± 0.75 % tolerance output voltage available (A version) ■ Output low noise voltage 160 µVRMS ■ Temperature range: -40 to 125 °C ■ Smallest package SOT23-5L and SOT-89 ■ Fast dynamic response to line and load changes Description The LD2981AB/C series are 100 mA fixed-output voltage regulator. The low drop-voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems. The quiescent current in sleep mode is less than 1 µA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin n° 3 (TTL compatible). This means that when thedevice is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD2981AB/C is designed to work with low ESR ceramic capacitor. Typical applications are in cellular phone, palmtop/laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera. SOT-89 SOT23-5L Table 1. Device summary Part numbers Output voltage AB Version C Version LD2981ABXX25 LD2981CXX25 2.5 V LD2981ABXX30 LD2981CXX30 3.0 V LD2981ABXX33 LD2981CXX33 3.3 V LD2981ABXX50 LD2981CXX50 5.0 V www.st.com |
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