LM3488
- 8-lead VSSOP package
- Internal push-pull driver with 1A 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 2.97V to 40V
- 100kHz to 1MHz adjustable and synchronizable clock frequency
- ±1.5% (overtemperature) internal reference
- 5µA 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 designed 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 design size. The switching frequency of LM3488 can be adjusted to any value from 100kHz to 1MHz by using a single external resistor or by synchronizing the device to an external clock. Current mode control provides excellent 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 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM3488 High-Efficiency Controller for Boost, SEPIC and Fly-Back DC-DC Converters 数据表 (Rev. P) | PDF | HTML | 2026-9-16 | ||
| 应用手册 | AN-1286 Compensation for the LM3478 Boost Controller (Rev. D) | PDF | HTML | 2022-8-9 | |||
| 应用手册 | LM34xx How to Design Flyback Converter with LM3481 Boost Controller (Rev. A) | 2019-4-8 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Softstart Using Constant Current Constant Voltage Approach | 2015-7-24 | ||||
| 技术文章 | Portable speaker power: Making the bass possible | PDF | HTML | 2015-5-12 | |||
| 应用手册 | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | 2014-7-11 | ||||
| 应用手册 | AN-1484 Designing A SEPIC Converter (Rev. E) | 2013-4-23 | ||||
| 应用手册 | AN-1990 Compensation for Current Mode Control SEPIC Converters (Rev. A) | 2013-4-23 | ||||
| 应用手册 | Modeling & Design of Current Mode Control Boost Converters (Rev. B) | 2013-4-23 | ||||
| 应用手册 | Application Note 1286 Compensation For The LM3478 Boost Controller (cn) | 2009-5-19 | ||||
| 应用手册 | Application Note 1484 Designing A SEPIC Converter (cn) | 2008-4-30 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator
该工具可帮助电源工程师根据规范选择合适的隔离式 DC-DC 拓扑。根据所选的拓扑，计算器还会针对设计推荐合适的 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 — 超声波智能探头电源参考设计
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
订购和质量
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