現在提供此產品的更新版本
功能相同，但針腳輸出與所比較的裝置不同。
LM74700-Q1
- AEC-Q100 qualified with the following results
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Functional Safety-Capable
- 3.2-V to 65-V input range (3.9-V start up)
- –65-V reverse voltage rating
- Charge pump for external N-Channel MOSFET
- 20-mV ANODE to CATHODE forward voltage drop regulation
- Enable pin feature
- 1-µA shutdown current (EN=Low)
- 80-µA operating quiescent current (EN=High)
- 2.3-A peak gate turnoff current
- Fast response to reverse current blocking: < 0.75 µs
- Meets automotive ISO7637 transient requirements with a suitable TVS Diode
- Available in 6-pin and 8-pin SOT-23 Package 2.90 mm × 1.60 mm
The LM74700-Q1 is an automotive AEC Q100 qualified ideal diode controller which operates in conjunction with an external N-channel MOSFET as an ideal diode rectifier for low loss reverse polarity protection with a 20-mV forward voltage drop. The wide supply input range of 3.2 V to 65 V allows control of many popular DC bus voltages such as 12-V, 24-V and 48-V automotive battery systems. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems. The device can withstand and protect the loads from negative supply voltages down to –65 V.
The device controls the GATE of the MOSFET to regulate the forward voltage drop at 20 mV. The regulation scheme enables graceful turn off of the MOSFET during a reverse current event and ensures zero DC reverse current flow. Fast response (< 0.75 µs) to Reverse Current Blocking makes the device suitable for systems with output voltage holdup requirements during ISO7637 pulse testing as well as power fail and input micro-short conditions.
The LM74700-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. The high voltage rating of LM74700-Q1 helps to simplify the system designs for automotive ISO7637 protection. With the enable pin low, the controller is off and draws approximately 1 µA of current.
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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 | LM74700-Q1 Low IQ Reverse Battery Protection Ideal Diode Controller datasheet (Rev. G) | PDF | HTML | 2020/12/21 | ||
| Application brief | Full-Featured Automotive Side Mirror | PDF | HTML | 2024/3/15 | |||
| 類比設計期刊 | 適合使用理想二極體控制器的汽車應用備援電源拓撲 | PDF | HTML | Download English Version | PDF | HTML | 2024/2/15 | |
| 類比設計期刊 | Multibattery management in medical ultrasound systems (Rev. B) | PDF | HTML | 2023/6/8 | |||
| Application brief | Implementation of Test Pulses in Digital Output Modules | PDF | HTML | 2022/3/4 | |||
| 應用說明 | Basics of Ideal Diodes (Rev. B) | PDF | HTML | 2021/10/5 | |||
| 證書 | Automotive PPAP Documentation | 2021/6/18 | ||||
| 技術文章 | Meet airline restrictions with power-path control for dual batteries | PDF | HTML | 2020/7/21 | |||
| 功能安全資訊 | 簡化汽車及工業領域的功 能安全認證 | Download English Version | 2020/6/9 | |||
| 功能安全資訊 | LM74700-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019/12/16 | ||||
| 電子書 | 11 Ways to Protect Your Power Path | 2019/7/3 | ||||
| 應用說明 | Basics of Power Switches (Rev. A) | PDF | HTML | 2019/4/26 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM74700DDFEVM — LM74700-Q1 3.2-V 至 65-V、80-μA IQ 車用理想二極體控制器 (DDF 封裝) 評估模組
LM74700DDFEVM 可協助設計人員評估 LM74700-Q1 3.2-V 至 65-V、80-μA IQ 車用理想二極體控制器 (DDF 封裝) 的運作和性能。此評估模組展示 N 通道功率 MOSFET 如何以流經 IC 的低 IQ 和低漏電流模擬超低順向電壓二極體。
LM74700EVM — LM74700 評估模組
許多 TI 參考設計包含 LM74700-Q1
使用我們的參考設計選擇工具，以檢視並找出最適合您的應用和參數的設計。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
| SOT-23 (DBV) | 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。