LM78L
- Input voltage: up to 30V operating
- New chip: 45V absolute maximum
- Legacy chip: 35V absolute maximum
- Available output voltages:
- New chip: 3.3V, 5V, 6V, 12V, 15V
- Legacy chip: 5V, 6.2V, 8.2V, 9V, 12V, 15V
- Output current: 100mA
- Internal thermal overload protection
- Output current limiting
- No external components required for stability
- Wide absolute maximum junction temperature:
- New chip: -40°C to 150°C
- Legacy chip: see the Absolute Maximum Ratings
- Package options:
- SOIC
- SOT-89 (new chip only)
- TO-92 (legacy chip only)
- DSBGA (legacy chip only)
- Refer to the Device Nomenclature table for information about legacy and new chip orderables
The LM78L series (LM78Lxx throughout this document) of positive linear regulators is available with several fixed output voltages, making the devices useful in a wide range of applications. Used as a Zener-diode and resistor combination replacement, the LM78Lxx typically provides an effective output impedance improvement of two orders of magnitude and lower quiescent current. These regulators can provide local, on-card regulation, eliminating distribution problems associated with single-point regulation. The available voltages allow the LM78Lxx to be used in logic systems, instrumentation, industrial power delivery and more.
The LM78Lxx with new chip is available in SOIC (D) package and SOT-89 (PK) package. The LM78Lxx series regulators can deliver up to 100mA output current. Current limiting is included to limit the peak output current to a safe value. If internal power dissipation is too high, the thermal shutdown circuit prevents the IC from overheating.
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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 | LM78L 100mA Fixed Output Linear Regulator datasheet (Rev. N) | PDF | HTML | 2026/4/9 | ||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 應用說明 | AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) | 2013/5/6 | ||||
| 應用說明 | AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) | 2013/5/6 | ||||
| 應用說明 | TO-92 Packing Options / Ordering Instructions (Rev. A) | 2010/6/23 | ||||
| 應用說明 | Packaging Limits Range of Linear Regulators | 2010/5/8 | ||||
| 應用說明 | Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) | 2008/6/4 | ||||
| 應用說明 | Understanding the Terms and Definitions of LDO Voltage Regulators | 1999/10/21 |
設計與開發
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UA78LEVM-075 — 適用於 100-mA 30-V 線性電壓穩壓器的 UA78L 評估模組
UA78L 評估模組 (EVM) 是一款平台，可評估採用 PK 封裝之 UA78L 線性穩壓器的運作與性能。此 EVM 配置包含適合一般應用的單一 100-mA、三端子、低壓差 (LDO) 穩壓器。穩壓器可提供最高達 100-mA 的輸出電流，並具備高達 20 V 的輸入電壓 (VIN) 範圍。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
| SOT-89 (PK) | 3 | Ultra Librarian |
| DSBGA (YPB) | 8 | 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。