LM3578A
- Inverting and Non-Inverting Feedback Inputs
- 1.0V Reference at Inputs
- Operates from Supply Voltages of 2V to 40V
- Output Current up to 750 mA, Saturation Less than 0.9V
- Current Limit and Thermal Shut Down
- Duty Cycle up to 90%
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The LM2578A is a switching regulator which can easily be set up for such DC-to-DC voltage conversion circuits as the buck, boost, and inverting configurations. The LM2578A features a unique comparator input stage which not only has separate pins for both the inverting and non-inverting inputs, but also provides an internal 1.0V reference to each input, thereby simplifying circuit design and p.c. board layout. The output can switch up to 750 mA and has output pins for its collector and emitter to promote design flexibility. An external current limit terminal may be referenced to either the ground or the Vin terminal, depending upon the application. In addition, the LM2578A has an on board oscillator, which sets the switching frequency with a single external capacitor from <1 Hz to 100 kHz (typical).
The LM2578A is an improved version of the LM2578, offering higher maximum ratings for the total supply voltage and output transistor emitter and collector voltages.
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 | LM2578A/LM3578A Switching Regulator datasheet (Rev. E) | 2013/4/3 | |||
| 應用說明 | AN-1066 Low Cost Boost Converters Using LM3578A (Rev. B) | 2013/4/23 | ||||
| 應用說明 | AN-1055 Low-Cost Multiple Output Flyback Converter for I/O Cards | 2004/5/10 |
設計與開發
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FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator
此工具協助電源供應工程師根據規格選擇正確的隔離式 DC-DC 拓撲結構。根據選擇的拓撲結構，計算機還會推薦適合設計的 IC。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| PDIP (P) | 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。