LM7311
- Wide operating input voltage
range: 3.5V to 23V
- 28V absolute maximum
- Output negative voltage support up to -1V
- Integrated back-to-back FETs with low ON-resistance: RON = 33mΩ (typ)
- 5A continuous current
- 15A peak current for 10ms with 2% duty cycle
- Active High Enable input with adjustable undervoltage Lockout (UVLO)
- Ideal diode operation with true reverse current blocking (RCB)
- Fixed Overvoltage (OVLO) protection with debounce time
- Short Circuit protection at startup and steady state
- Adjustable output slew rate control (dVdt)
- Overtemperature protection
- Digital output: Fault Indication (FLT)
- Small footprint: DFN 3mm × 3mm
The LM7311x family is a highly integrated, circuit-protection and power-management device in a small package. The devices provide multiple protection modes that use few external components and are a robust defense against overloads, short-circuits, voltage surges and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices designed for power MUX and ORing applications, as well as systems that need load side energy hold up storage if input power supply fails. The devices use a linear ORing based scheme to maintain almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.
Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold.
The devices are available in a 3mm × 3mm, for improved thermal performance and reduced system footprint.
The devices are characterized for operation over a junction temperature range of –40°C to +125°C.
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 | LM7311 3.5V–23V, 33mΩ, 5A eFuse With True Reverse Current blocking datasheet | PDF | HTML | 2026/8/21 |
設計與開發
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LM7320-30EVM — LM7311、LM7320 與 LM7330 評估模組
LM7320-30EVM 用於評估 LM7311、LM7320 與 LM7330 eFuse 裝置的性能。LM7320-30EVM 配備 LM7320 與 LM7330 eFuse，可用於評估典型 12V（典型）和 7A（就緒狀態）設計。
將 LM7311DRRR 放置於 U1 插槽，即可使用此 EVM 評估 LM7311DRRR。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRR) | 12 | 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。