LM65645-Q1
- AEC-Q100 qualified
for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Wide input voltage range: 3V to
65V (70V transient < 100ms)
- Meets LV148 / ISO21780 requirements
- Designed for low EMI requirements
- Facilitates CISPR 25 class 5 compliance
- Mode pin configurable ±5% or ±10% dual-random spread spectrum reducing peak emissions
- Enhanced HotRod™ QFN package with symmetrical pinout
- Switching frequency from 300kHz to 2.2MHz
- Pin-configurable AUTO or FPWM operation
- Internal compensation, current limit, and TSD
- Low minimum on time: 40ns (maximum)
- Enables 36VIN to 3.3VOUT conversion at 2.2MHz
- High-efficiency power conversion at all loads
- > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
- 2.5µA switching input current at no load
- High power density
- 3.6mm × 2.6mm, wettable flank, 20-pin package
- Pin compatible with 36V LM654x0-Q1
- ϴJA = 24.0°C/W (LM65645-Q1EVM)
- Create a custom design using the LM656x5-Q1 with the WEBENCH Power Designer
The LM656x5-Q1 are a family of automotive buck converters designed for high efficiency, high-power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V transient < 100ms), reducing the need for external input surge protection. The LM656x5-Q1 comes with pin selectable fixed output voltages of 3.3V and 5V or in adjustable configuration. The low EMI operation is enabled with minimized loop inductance and optimized switch node slew rate. A pin-selectable ±5% or ±10% dual-random spread spectrum (DRSS) significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low. The current-mode control architecture with a 30ns typical minimum on-time allows high conversion ratios at high frequencies coupled with a fast transient response and excellent load and line regulation.
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 | LM656x5-Q1 High-Performance, 3V to 65V , Pin Compatible, 2.5A, 3.5A, 4.5A, Automotive , Low EMI, Synchronous Buck Converters datasheet (Rev. A) | PDF | HTML | 2025/5/27 | ||
| 應用說明 | Controller to Converter – Design Considerations for 24V and 48V Systems | PDF | HTML | 2024/10/2 | |||
| 應用說明 | Reducing Conducted EMI in a Buck Converter for 48 V Automotive Applications | PDF | HTML | 2023/12/13 | |||
| 電子書 | An Engineer’s Guide to Low EMI in DC/DC Regulators | 2021/4/21 | ||||
| 技術文章 | Using DC/DCs buck converters to power modern safety features in commercial vehicle | PDF | HTML | 2020/7/27 | |||
| 技術文章 | How to meet European Commission ADAS requirements with TI DC/DC converters | PDF | HTML | 2019/5/9 | |||
| 技術文章 | Top three qualities to consider when designing a video doorbell power supply | PDF | HTML | 2018/9/25 | |||
| 白皮書 | An overview of radiated EMI specifications for power supplies | 2018/6/5 | ||||
| 技術文章 | Effects of IC package on EMI performance | PDF | HTML | 2018/5/22 | |||
| 白皮書 | An overview of conducted EMI specifications for power supplies | 2018/2/1 |
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)。
LM65645EVM — LM65645 評估模組
LM656X5-CALC — LM656x5 快速入門設計計算機
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN-FCRLF (RZT) | 20 | 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。