TPS22950
- Input operating voltage range (VIN): 1.8 V–5.5 V
- Output current limit (ILIMIT): 0.05 A–3.5 A (typ.)
-
TPS22950: Auto-retry current limit response
- TPS22950L: Latch off current limit response
- Thermal shutdown (TSD)
- ON-resistance
(RON):
- RON at VIN = 5 V: 34 mΩ (typ.)
- RON at VIN = 3.3 V: 41 mΩ (typ.)
- Slow turn-ON timing limits inrush current (typ.):
- tON at VIN = 5 V: 800 µs
- tON at VIN = 3.3 V: 550 µs
- Always-ON reverse current blocking (TPS22950)
- Fault indication (FLT)
- Quick output discharge (QOD): 150 Ω
- Smart ON pin pulldown (RPD,ON):
- ON ≥ VIH (ION): 50 nA (max.)
- ON ≤ VIL (RPD,ON): 500 kΩ (typ.)
- Low power consumption:
- ON state (IQ): 40 µA (typ.)
- OFF state (ISD): 0.2 µA (typ.)
- UL 2367 Recognition – File No. E169910
- Certified from ILIM = 66 mA to 2.46 A
The TPS22950x is a small, single channel load switch with robust protection against fault cases with adjustable output current limiting, reverse current blocking, and thermal shutdown.
The switch ON state is controlled by a digital input that is capable of interfacing directly with low-voltage control signals. When power is first applied, a smart pulldown is used to keep the ON pin from floating until system sequencing is complete. After the pin is deliberately driven high (>VIH), the smart pulldown is disconnected to prevent unnecessary power loss.
The TPS22950/C responds to overcurrent events with auto-retry behavior, while the TPS22950L uses a debounce time and latch off behavior.
TPS22950x is available in a standard WCSP package and leaded SOT package characterized for operation over an ambient temperature range of –40°C to 125°C.
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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 | TPS22950x 5.5-V, 3.2-A, 34-mΩ Adjustable Current Limited Load Switch datasheet (Rev. B) | PDF | HTML | 2023/2/28 | ||
| 證書 | TPS22950LEVM EU RoHS Declaration of Conformity (DoC) | 2021/10/11 | ||||
| 證書 | TPS22950EVM EU Declaration of Conformity (DoC) | 2020/11/18 | ||||
| Application brief | Current Limit and Short Circuit Protection in Power Restricted Load Switch Apps | PDF | HTML | 2020/9/24 |
設計與開發
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TPS22950EVM — 具有可調整電流限制的 TPS22950 5.5-V、2-A、40-mΩ 負載開關評估模組
TPS22950 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估 TPS22950。TPS22950 是可調整電流限制負載開關。EVM 允許使用者設定 TPS22950 運作模式，以進行完整電壓與額定電流的評估。可在 EVM 上監控輸出、輸入和切換波形。
TPS22950LEVM — 適用於負載開關的 TPS22950L 評估模組
TPS22950LEVM 是一款雙層 PCB，內含 TPS22950L 負載開關裝置。與裝置及 PCB 佈線圖路由連接的 VIN 和 VOUT 能夠處理高連續電流，並提供出入測試中裝置的低電阻路徑。測試點連線可讓 EVM 使用者利用使用者定義的測試條件來控制裝置，並進行準確的 RON 量測。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |
| DSBGA (YBH) | 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。