TPS254900-Q1
- AEC-Q100 Qualified With the Following Results:
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C5
- 4.5-V to 6.5-V Input Operating Range
- Integrated 45-mΩ (typ.) High-Side MOSFET
- 3-A Maximum Continuous Output Current
- VBUS ±5% Cable Compensation Accuracy at Connector
- Supports USB BC 1.2 CDP and SDP Modes
- Short-to-Battery Protection on OUT, DP_IN, and DM_IN Pins
- DP_IN and DM_IN IEC 61000-4-2 Rated
- ±8-kV Contact and ±15-kV Air Discharge
- 20-Pin QFN (3-mm × 4-mm) Package
The TPS254900-Q1 device is a USB charging-port controller and power switch with short-to-battery protection. This feature provides protection on OUT, DM_IN and DP_IN. These three pins withstand voltage up to 18 V. The internal MOSFET turns off quickly when the short-to-battery condition occurs. Rapid turnoff is very important to protect the upstream dc-dc converter, processor, or hub data lines.
The TPS254900-Q1 45-mΩ power switch has two selectable, adjustable current limits that support port power management by changing to a lower current limit when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and upstream power supplies with limited capacity.
The TPS254900-Q1 has a current-sense output that is able to control an upstream supply, which allows it to maintain 5 V at the USB port even with heavy charging currents. This feature is important in systems with long USB cables where significant voltage drops can occur with fast-charging portable devices.
A current monitor allows a system to monitor the load current in real time by monitoring the IMON voltage. The current monitor is very useful and can be used for dynamic port-power management.
The TPS254900-Q1 device also provides ESD protection capability per IEC 61000-4-2, level 4 on DP_IN and DM_IN.
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 | TPS254900-Q1 Automotive USB Host Charger With Short-to-VBATT Protection datasheet (Rev. A) | PDF | HTML | 2016/10/5 | ||
| 應用說明 | How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device | PDF | HTML | 2020/2/26 | |||
| 應用說明 | Monitoring Load Current With the TPS2549 and TPS254900 CS Pin | 2017/8/31 | ||||
| 應用說明 | TPS254x Eye Diagram Performance Test | 2017/7/19 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RVC) | 20 | 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。