LM3488
- Automotive Grade Product, AEC-Q100 Qualified
- 8-Lead VSSOP Package
- Internal Push-Pull Driver With 1-A Peak Current Capability
- Current Limit and Thermal Shutdown
- Frequency Compensation Optimized With a Capacitor and a Resistor
- Internal Soft-Start
- Current Mode Operation
- Undervoltage Lockout With Hysteresis
- Key Specifications:
- Wide Supply Voltage Range of 2.97 V to 40 V
- 100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency
- ±1.5% (Overtemperature) Internal Reference
- 5-µA Shutdown Current (Overtemperature)
- Create a Custom Design Using the LM3488 with the WEBENCH Power Designer
The LM3488 is a versatile low-side N-FET high-performance controller for switching regulators. This device is suitable for use in topologies requiring low-side FET, such as boost, flyback, or SEPIC. Moreover, the LM3488 can be operated at extremely high switching frequency to reduce the overall solution size. The switching frequency of LM3488 can be adjusted to any value from 100 kHz to 1 MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.
The LM3488 has built-in features such as thermal shutdown, short-circuit protection, and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5 µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
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 | LM3488/-Q1 Automotive High-Efficiency Controller for Boost, SEPIC and Fly-Back DC-DC Converters datasheet (Rev. O) | PDF | HTML | 2015/7/6 | ||
| 應用說明 | AN-1286 Compensation for the LM3478 Boost Controller (Rev. D) | PDF | HTML | 2022/8/9 | |||
| 應用說明 | LM34xx How to Design Flyback Converter with LM3481 Boost Controller (Rev. A) | 2019/4/8 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Softstart Using Constant Current Constant Voltage Approach | 2015/7/24 | ||||
| 技術文章 | Portable speaker power: Making the bass possible | PDF | HTML | 2015/5/12 | |||
| 應用說明 | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | 2014/7/11 | ||||
| 應用說明 | AN-1484 Designing A SEPIC Converter (Rev. E) | 2013/4/23 | ||||
| 應用說明 | AN-1990 Compensation for Current Mode Control SEPIC Converters (Rev. A) | 2013/4/23 | ||||
| 應用說明 | Modeling & Design of Current Mode Control Boost Converters (Rev. B) | 2013/4/23 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
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。
LM3478-88-BOOST-CALC — LM3478-88 quick start calculator for boost
LM3478-88-FLYBACK-CALC — LM3478-88 quick start calculator for Flyback
LM3478-88-SEPIC-CALC — LM3478-88 quick start calculator for SEPIC
TIDA-010057 — 超音波智慧探測器電源供應參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 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。