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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP3981 датащи(PDF) 1 Page - Lowpower Semiconductor inc |
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LP3981 датащи(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 8 page  Preliminary Datasheet LP3981 LP3981 – 01 Ver. 1.1 Datasheet Feb.-2008 Page 1 of 8 300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator General Description The LP3981 is designed for portable RF and wireless applications with demanding performance and space requirements. The LP3981 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The LP3981 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The LP3981 consumes less than 0.01µA in shutdown mode and has fast turn-on time less than 50µs. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the 5-lead of SOT23-5 packages. Ordering Information LP3981 - □ □ □ □ □ F: Pb-Free Package Type B5: SOT23-5 Output Voltage Type 12: 1.2V 15: 1.5V 18: 1.8V 25: 2.5V 28: 2.8V 30: 3.0V 33: 3.3V 50: 5.0V Typical Application Circuit + Vin 1 3 4 5 IN SHDN NC OUT Vout + 1uF Features Ultra-Low-Noise for RF Application 2V- 6.5V Input Voltage Range Low Dropout : 220mV @ 300mA 1.2V, 1.5V, 1.8V, 2.5V, 2.8V 3.0V and 3.3V Fixed 300mA Output Current, 550mA Peak Current High PSSR:-73dB at 1KHz < 0.01uA Standby Current When Shutdown Available in SOT23-5 Package TTL-Logic-Controlled Shutdown Input Ultra-Fast Response in Line/Load transient Current Limiting and Thermal Shutdown Protection Quick start-up (typically 50uS) Applications Portable Media Players/MP3 players Cellular and Smart mobile phone LCD DSC Sensor Wireless Card Pin Configurations Marking Information Please see website. SOT-25(Top View) |
Аналогичный номер детали - LP3981 |
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Аналогичное описание - LP3981 |
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