LMQ66430-Q1
- Functional Safety-Capable
- AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Optimized for low EMI requirements:
- Facilitates CISPR 25 class 5 compliance
- Integrated bypass and boot capacitors reduce EMI
- Dual random spread spectrum reduces peak emissions
- Enhanced HotRod™ QFN package minimizes switch node ringing
- Greater than 85% efficiency at 1mA
- Designed for automotive applications:
- Junction temperature range: –40°C to +150°C
- NC pin between critical pins for better reliability
- Best in-class pin FMEA
- Supports 42V automotive load dump transients
- Supports 3VIN for automotive cold crank
- Miniature design size and low component cost:
- Integrated input bypass capacitors and bootstrap capacitor reducing EMI
- 2.6mm × 2.6mm enhanced HotRod QFN package with wettable flanks
- Internal control loop compensation
The LMQ664x0-Q1 is the industry smallest 36V, 3A (available in 2A and 1A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7V to 36V (after start-up or after operating) with transients up to 42V.
The LMQ664x0-Q1 is specifically designed to meet low standby power requirements for always-on, automotive applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5µA at 13.5VIN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small design size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod QFN package, and an optimized pinout. The MODE/SYNC pin can be used to set or synchronize the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (excellent choice pin FMEA). The rich feature set of the LMQ664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LMQ664x0-Q1 , 36V, 1A, 2A, and 3A, Ultra-Small, Synchronous Automotive Step-Down Converter With Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. D) | PDF | HTML | 2024年 11月 25日 |
| Functional safety information | LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2024年 11月 5日 | |
| White paper | 解決 Nano IQ 系統的性能挑戰 (Rev. A) | PDF | HTML | 2024年 3月 25日 | |
| Application brief | Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance | PDF | HTML | 2023年 1月 18日 | |
| Technical article | How buck regulators with integrated capacitors help lower EMI and save board space | PDF | HTML | 2022年 3月 16日 | |
| User guide | LMQ66430-Q1 Buck Controller Evaluation Module User's Guide | PDF | HTML | 2022年 2月 2日 | |
| Certificate | LMQ66430EVM-2M EU RoHS Declaration of Conformity (DoC) | 2021年 10月 21日 |
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)。
LMQ66430-2EVM — 具強化型 HotRod™ QFN、適用於 36-V 3-A 同步降壓轉換器的 LMQ66430 評估模組
LMQ66430-2EVM 評估模組 (EVM) 有助於設計人員評估 LMQ66430-Q1 裝置的運作和性能，而這是一款同步降壓 DC/DC 轉換器，能夠從高達 36 V 的輸入電壓驅動高達 3 A 的負載電流。此外，LMQ66430-Q1 具有超低運作靜態電流，輕負載時提供高效率，並且採用小型 2.6-mm × 2.6-mm 強化型 HotRod™ QFN 封裝，提供低 EMI 解決方案尺寸。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-FCRLF (RXB) | 14 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點