LM25069
- Operating R ange: +2.9V to +17V
- In-rush Current Limit for Safe Board Insertion into Live Power Sources
- Programmable Maximum Power Dissipation in the External Pass Device
- Adjustable Current Limit
- Circuit Breaker Function for Severe Over-Current Events
- Internal High Side Charge Pump and Gate Driver for External N-channel MOSFET
- Adjustable Under-Voltage Lockout (UVLO) and Hysteresis
- Adjustable Over-Voltage Lockout (OVLO) and Hysteresis
- Initial Insertion Timer Allows Ringing and Transients to Subside After System Connection
- Programmable Fault Timer Avoids Nuisance Trips
- Active High Open Drain POWER GOOD Output
- Available in Latched Fault and Automatic Restart Versions
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The LM25069 positive hot swap controller provides intelligent control of the power supply voltage to the load during insertion and removal of circuit cards from a live system backplane or other "hot" power sources. The LM25069 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass N-Channel MOSFET are programmable, ensuring operation within the Safe Operating Area (SOA). The POWER GOOD output indicates when the output voltage is within 1.3V of the input voltage. The input under-voltage and over-voltage lockout levels and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM25069-1 latches off after a fault detection, while the LM25069-2 automatically restarts at a fixed duty cycle. The LM25069 is available in a 10 pin VSSOP package.
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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 | LM25069 Positive Low Voltage Power Limiting Hot Swap Controller datasheet (Rev. E) | 2013/3/28 | |||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 選擇指南 | Hot Swap Selection Tool | 2015/7/28 | ||||
| 應用說明 | Output Voltage Clamping Using the LM5069 Hot Swap Controller (Rev. B) | 2013/5/6 |
設計與開發
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LM25069-2 TINA-TI Transient Input Transient Reference Design
LM25069-2 TINA-TI Transient Restart Sequence Reference Design
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGS) | 10 | 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。