TPS2552
- Up to 1.5A maximum load current
- ±6% current-limit accuracy at 1.7A (Typical)
- Meets USB current-limiting requirements
- Backwards compatible with TPS2550 and TPS2551
- Adjustable Current Limit: 75mA to 1700mA (Typical)
- Constant-current (TPS255x) and latch-off (TPS255x-1) versions
- Fast overcurrent response - 2µs (Typical)
- 85mΩ high-side MOSFET (DBV package)
- 100mΩ high-side MOSFET (DRV package)
- Reverse input-output voltage protection
- Operating range: 2.5V to 6.5V
- Built-in soft start
- TPS25530-1 additional features:
- Quick Output Discharge (QOD)
- 2.5A continuous current in DRV package
- ±6% current-limit accuracy at 2.64A (Typical)
- 15kV ESD protection per IEC 61000-4-2 (with external capacitance)
- Safety-related certifications:
- UL listed – File No. E169910
-
NEMKO IEC60950-1-am1 ed2.0
- See the Load switches portfolio
The TPS255x and TPS255x-1 power-distribution switches are intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5A of continuous load current. These devices offer a programmable current-limit threshold from 75mA to 1.7A (typical) through an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. 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 using a constant-current mode when the output load exceeds the current-limit threshold. TPS255x-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. An internal reverse-voltage comparator disables the power-switch when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.
The TPS25530-1 devices have an integrated quick output discharge path when the switch is turned off, pulling the output down to ground. The current limit range is also extended to 2.64A (typical) with the 10kΩ ILIM setting for this device.
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 | TPS255xx Precision Adjustable Current-Limited Power-Distribution Switches datasheet (Rev. G) | PDF | HTML | 2026/10/27 | ||
| 證書 | TPS255x UL 2367 Certificate of Compliance E169910-20090213 | 2024/6/25 | ||||
| 證書 | TPS255x 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 | ||||
| 應用說明 | USB Power Switch Reverse Current Protection | 2013/2/13 | ||||
| EVM User's guide | Power-Distribution Switch with Adjustable Current-Limit Evaluation Module | 2008/10/8 |
設計與開發
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TPS2552DBVEVM-364 — 適用於 TPS2552DBVEVM-364 且具有可調整電流限制的配電開關評估模組
The TPS2552/3DBVEVM and TPS2552/3DRVEVM are evaluation modules (EVM) for Texas Instruments’family of power-distribution switches with adjustable current-limit. These EVMs operate over a 2.5 V to 6.5 V range. An onboard jumper sets the output current-limit to either 0.5 A or (...)
TPS2552DRVEVM-364 — 適用於 TPS2552DRVEVM-364 且具有可調整電流限制的配電開關評估模組
TPS2552/3DBVEVM 和 TPS2552/3DRVEVM 是評估模組 (EVM)，適用於德州儀器可調電流限制型電源分配開關系列。這些 EVM 可在 2.5V 至 6.5V 範圍內運作。板載跨接器可將輸出電流限制設定為 0.5A 或 1A。 測試點可方便存取所有重要節點電壓。
TPS255X-CURRENT-LIMIT-CALC — Current-Limit Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
| WSON (DRV) | 6 | 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。