LM3526
- Compatible with USB1.1 and USB 2.0
- 1 ms Fault Flag Delay Filters Hot-Plug Events
- Smooth Turn-on Eliminates In-rush Induced Voltage Drop
- UL Recognized Component: REF# 205202
- 1A Nominal Short Circuit Output Current Protects PC Power Supplies
- Thermal Shutdown Protects Device in Direct Short Condition
- 500mA Minimum Continuous Load Current
- Small SOIC-8 package minimizes board space
- 2.7V to 5.5V Input Voltage Range
- 140 mΩ Max. Switch Resistance
- 1 µA Max. Standby Current
- 200 µA Max. Operating Current
- Under-voltage Lockout (UVLO)
All trademarks are the property of their respective owners.
The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The dual port device is ideal for Notebook and desktop PC's that supply power to more than one port.
A 1 ms delay on the fault flag output prevents erroneous overcurrent reporting caused by in-rush currents during hot-plug events.
The dual stage thermal protection circuit in the LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted.
The LM3526 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based in-rush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable inputs accept both 3.3V and 5.0V logic thresholds.
The small size, low RON, and 1 ms fault flag delay make the LM3526 a good choice for root hubs as well as per-port power control in embedded and stand-alone hubs.
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 | LM3526 Dual Port USB Power Switch and Over-Current Protection 数据表 (Rev. E) | 2013-3-7 | |||
| 证书 | US-38419-UL Certificate of Compliance IEC 62368-1 | 2022-6-27 |
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
推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。