LP2957
- 5V Output within 1.4% Over Temperature (A Grade)
- Easily Programmed for Snap-On/Snap-Off Output
- Ensured 250 mA Output Current
- Extremely Low Quiescent Current
- Low Input-Output Voltage Required for Regulation
- Reverse Battery Protection
- Extremely Tight Line and Load Regulation
- Very Low Temperature Coefficient
- Current and Thermal Limiting
- Error Flag Signals when Output is out of Regulation
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The LP2957 is a 5V micropower voltage regulator with electronic shutdown, error flag, very low quiescent current (150 µA typical at 1 mA load), and very low dropout voltage (470 mV typical at 250 mA load current).
Output can be wired for snap-on/snap-off operation to eliminate transition voltage states where µP operation may be unpredictable.
Output crowbar (50 mA typical pull-down current) will bring down the output quickly when the regulator snaps off or when the shutdown function is activated.
The part has tight line and load regulation (0.04% typical) and low output temperature coefficient (20 ppm/°C typical).
The accuracy of the 5V output is ensured at room temperature and over the full operating temperature range.
The LP2957 is available in the five-lead TO-220 and DDPAK/TO-263 packages.
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 | LP2957/LP2957A 5V Low-Dropout Regulator for µP Applications データシート (Rev. C) | 2013/04/04 | |||
| アプリケーション・ノート | AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) | 2013/04/23 | ||||
| アプリケーション・ノート | Application Note 1061 Power Conversion in Line-Powered Equipment (jp) | 2004/05/01 |
設計と開発
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| 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 |
|---|---|---|
| TO-263 (KTT) | 5 | Ultra Librarian |