TPS2557
- Meets USB Current-Limiting Requirements
- Adjustable Current Limit, 500 mA to 5 A (Typical)
- ±6.5% Current-Limit Accuracy at 4.5 A
- Fast Overcurrent Response: 3.5-µs (Typical)
- 22-mΩ High-Side MOSFET
- Operating Voltage: 2.5 V to 6.5 V
- 2-µA Maximum Standby Supply Current
- Built-in Soft Start
- 15-kV and 8-kV System-Level ESD Capable
- UL Listed: File No. E169910 and CB IEC60950-1-am2 ed2.0
The TPS255x power-distribution switch is intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turnon and turnoff.
TPS255x devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULT logic output asserts low during overcurrent and overtemperature conditions.
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 | TPS255x Precision Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. B) | PDF | HTML | 2016/12/1 | ||
| 證書 | TPS2556, TPS2557 UL Certificate of Compliance IEC 62368-1 (Rev. A) | 2024/6/24 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 |
設計與開發
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TPS2557DRBEVM-423 — TPS2557DRBEVM-423：用於 TPS2557 的評估模組
The TPS2556EVM-423 and TPS2557EVM-423 are evaluation modules (EVM) for Texas Instruments power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5-V to 6.5-V range. An on-board jumper sets the output current-limit to either 0.5 A or 1 A. The board is designed for the (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRB) | 8 | 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。