TPS5403
- Fixed 3.3-V Output
- 4.5-V to 28-V Wide Input Voltage Range
- Up to 1.7-A Maximum Continuous Output Loading Current
- Pulse Skipping Mode to Achieve High Light Load Efficiency
- Over 80% Efficiency at 10-mA Loading
- Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor
(Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz) - Peak Current-Mode Control
- Cycle-by-Cycle Over Current Protection
- Frequency Spread Spectrum and Switching Node Anti-Ringing to Ease EMI Issue
- External Soft Start
- Available in SOIC8 Package
The TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V. Current mode control with internal slope compensation is implemented to reduce component count.
TPS5403 also features a light load pulse skipping mode, which allows for a power loss reduction from the input power supply to the system at light loading.
The switching frequency of the converters can be set from 50 kHz to 1.1 MHz with an external resistor. Frequency spread spectrum operation is introduced for EMI reduction.
LX anti-ringing is added to address high frequency EMI issues.
A cycle-by-cycle current limit with frequency fold back protects the IC at over loading condition.
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 | 4.5V 至28V 输入电压，3.3V 固定输出，1.7A 输出电流，带有集成金属氧化物半导体场效应晶体管(MOSFET) 的非同步降压稳压器 数据表 | 英语版 | 2012-10-19 | ||
| 用户指南 | TPS5403 Step-Down Converter Evaluation Module User's Guide (Rev. A) | PDF | HTML | 2021-11-1 |
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）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
订购和质量
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