LP3881
- Ultra Low Dropout Voltage (75 mV @ 0.8A Typ)
- Low Ground Pin Current
- Load Regulation of 0.04%/A
- 60 nA Typical Quiescent Current in Shutdown
- 1.5% Output Accuracy (25°C)
- TO-220, TO-263 and SOIC-8 Packages
- Over Temperature/Over Current Protection
- −40°C to +125°C Junction Temperature Range
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The LP3881 is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.
The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220, TO-263 and SOIC-8 packages.
Dropout Voltage: 75 mV (typ) @ 0.8A load current.
Ground Pin Current: 3 mA (typ) at full load.
Shutdown Current: 60 nA (typ) when S/D pin is low.
Precision Output Voltage: 1.5% room temperature accuracy.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LP3881 0.8A Fast-Response Ultra Low Dropout Linear Regulators datasheet (Rev. F) | 2013/4/2 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TO-263 (KTT) | 5 | Ultra Librarian |