LM337-N
- 1.5A Output Current
- Line Regulation 0.01%/V (Typical)
- Load Regulation 0.3% (Typical)
- 77dB Ripple Rejection
- 50ppm/°C Temperature Coefficient
- Thermal Overload Protection
- Internal Short-Circuit Current Limiting Protections
The LM137 and LM337-N are adjustable 3-terminal negative voltage regulators capable of supplying −1.5A or more currents over an output voltage range of −1.25V to −37V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 and LM337-N feature internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads.
The LM137 and LM337-N are ideal complements to the LM117 and LM317 adjustable positive regulators. The LM137 has a wider operating temperature range than the LM337-N and is also offered in military and space qualified versions.
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 | LM137, LM337-N 3-Terminal Adjustable Negative Regulators datasheet (Rev. F) | PDF | HTML | 2026/5/27 | ||
| 應用說明 | Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) | 2013/5/5 | ||||
| 應用說明 | LB-46 A New Production Technique for Trimming Voltage Regulators | 2004/5/15 | ||||
| 應用說明 | A New Production Technique for Trimming Voltage Regulators | 2002/10/3 |
設計與開發
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LM317A-337N-EVM — 3 針腳可調整穩壓器評估模組
LM317A-337N-EVM 展示了 LM317A 可調整穩壓器及其負補數 LM337-N 的規範應用。評估模組 (EVM) 透過每個裝置的 SOT-223 封裝選項進行評估，可提供高達 1A 的負載電流。EVM 設計便於輕鬆修改，可安裝 TO-220 版本的裝置以實現 1.5A 的工作電壓。此 EVM 擁有足夠的佔用空間供選擇個人電容器，以及 4 銅層和散熱器空間，可實現絕佳功耗。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-223 (DCY) | 4 | Ultra Librarian |
| TO-220 (NDE) | 3 | Ultra Librarian |
| TO-220 (NDG) | 3 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。