LP3981
- 2.5-V to 6-V Input Range
- 300-mA Output Current
- 60-dB PSRR at 1 kHz
- ≤ 1-µA Quiescent Current When Shut Down
- Fast Turnon Time: 120 µs (typical) with CBYPASS =
0.01 µF - 132-mV Typical Dropout with 300-mA Load
- 35-µVrms Output Noise Over 10 Hz to 100 kHz
- Logic Controlled Enable
- Stable With Ceramic and High-Quality Tantalum
Capacitors - Thermal Shutdown and Short-Circuit Current Limit
- Low Thermal Resistance in WSON-6 Package
Gives Excellent Power Capability
Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.
Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.
The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.
The LP3981 is available in 8-pin VSSOP-8 and 6-pin WSON packages. Performance is specified for −40°C to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other output options can be made available; contact your local TI sales office for more information.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator データシート (Rev. H) | PDF | HTML | 2015/07/18 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| WSON (NGC) | 6 | Ultra Librarian |
購入と品質
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。