TPS25921L
- 4.5 V – 18 V Operating Voltage, 20 V (Max)
- 90 mΩ RDS(ON) (Typical)
- 0.4 A to 1.6 A Adjustable Current Limit
- ±2% Accurate ILIMIT at 1A at 25°C
- ±3% Overvoltage, Undervoltage Threshold
- Programmable dVO/dt Control
- Fault Output for Thermal Shutdown, UVLO and
OVP - 40°C to 125°C Junction Temperature Range
- Auto-Retry and Latch-Off Versions
- UL2367 Recognized - File No. E169910
- UL60950 - Safe during Single Point Failure Test
The TPS25921 is a compact, feature rich eFuse with a full suite of protection functions. The wide operating voltage allows control of many popular DC buses. The precise ±2% current limit, at room temperature, provides excellent accuracy making the TPS25921 well suited for many system protection applications.
Load, source and device protection are provided with multiple programmable features including overcurrent, overvoltage and undervoltage. 3% threshold accuracy for UV and OV, ensures tight supervision of bus voltages, eliminating the need for supervisor circuitry. Fault flag output (FLT) is provided for system status monitoring and down stream load control.
For hot-plug-in boards, TPS25921 provides in-rush current control and programmable output ramp-rate. Output ramp rate is programmable using a capacitor at soft-start (SS) pin, for maximum design flexibility.
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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 | TPS25921x 4.5V - 18V eFuse with Precise Current Limit and Over Voltage Protection datasheet (Rev. C) | PDF | HTML | 2015/11/11 | ||
| 功能安全資訊 | eFuse: Safety Certification and why it Matters | 2020/3/18 | ||||
| 證書 | TPS25921x UL Certificate of Compliance IEC 62368-1 | 2020/1/17 | ||||
| 應用說明 | Basics of eFuses (Rev. A) | 2018/4/5 |
設計與開發
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TPS25921EVM-637 — 具有精密電流限制的 TPS25921EVM-637 4.5-18V eFuse 評估模組
TPS25921xD eFuse 是採用小型封裝的高度積體電路保護和電源管理解決方案。這些裝置只使用少量外部元件,並提供多種保護模式,並可針對過載、短路、電壓突波及湧浪電流過大,提供穩固的防護。電流限制等級可透過單一外部電阻器設定,且電流限制設定在室溫下的精準準確度為 ±2%。
此外,這些裝置也會切斷輸入匯流排並保護系統免受過電壓事件影響,使用者可根據系統需求以簡易電阻器進行配置。
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|---|---|---|
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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。