LM3475
- Easy-to-Use Control Methodology
- 0.8 V to VIN Adjustable Output Range
- High Efficiency (90% Typical)
- ±0.9% (±1.5% Over Temperature) Feedback
Voltage - 100% Duty Cycle Capable
- Maximum Operating Frequency up to 2 MHz
- Internal Soft-Start
- Enable Pin
The LM3475 is a hysteretic P-FET buck controller designed to support a wide range of high efficiency applications in a very small SOT-23-5 package. The hysteretic control scheme has several advantages, including simple system design with no external compensation, stable operation with a wide range of components, and extremely fast transient response. Hysteretic control also provides high efficiency operation, even at light loads. The PFET architecture allows for low component count as well as 100% duty cycle and ultra-low dropout operation.
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 | LM3475 Hysteretic PFET Buck Controller 数据表 (Rev. C) | PDF | HTML | 2015-10-31 | ||
| 模拟设计期刊 | 控制模式快速参考指南 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2023-9-5 | |
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 用户指南 | PMLK Buck Experiment Book (Rev. B) | 2017-4-21 | ||||
| 用户指南 | TI 电源管理实验套件 TI-PMLK BUCK 实验板的 经济高效型测试方法 (Rev. A) | 英语版 (Rev.A) | 2016-8-31 |
设计与开发
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LM3475EVAL — 滞后 PFET 降压控制器
The LM3475 evaluation board is provided as a tool for developing DC/DC converters based on the LM3475 IC. As shown in Figure 1, the evaluation board is configured to provide an output of 2.5V at up to 2A from an input up to 10V. The corresponding bill of material is given in Table 1. Typical (...)
PMLKBUCKEVM — 使用 TPS54160 和 LM3475 的 TI-PMLK 升压实验板
TI-PMLK 升压实验板是 TI 电源管理实验室套件 (TI-PMLK) 系列的一部分。TI-PMLK 系列支持实践学习，有助于巩固电源知识。利用模块化格式，用户能够以对其电源设计总体理解产生最大影响的方式自定义 TI-PMLK 系列体验。TI-PMLK 降压实验板采用 TPS54160 和 LM3475。《TI-PMLK 降压实验手册》包括各种理论和实验，涵盖实际应用中所见的稳态、瞬态和动态条件的各种测试。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
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