LMQ66430-Q1
- Functional Safety-Capable
- AEC-Q100-qualified for automotive
applications:
- Temperature grade 1: –40°C to +125°C, TA
- ZEN 2 switcher
- 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). ZEN 2 switcher features enable the device to support ultra low-EMI applications. 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
| 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 | LMQ664x0-Q1 36V, 1A, 2A, and 3A, Ultra-Small, Synchronous Automotive ZEN 2 Step-Down Converter With Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. E) | PDF | HTML | 2025/12/9 | ||
| 功能安全資訊 | LMQ664x0 and LMQ664x0-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2024/11/5 | |||
| 白皮書 | 解決 Nano IQ 系統的性能挑戰 (Rev. A) | PDF | HTML | Download English Version (Rev.A) | PDF | HTML | 2024/3/25 | |
| Application brief | Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance | PDF | HTML | 2023/1/18 | |||
| 技術文章 | How buck regulators with integrated capacitors help lower EMI and save board space | PDF | HTML | 2022/3/16 | |||
| 證書 | LMQ66430EVM-2M EU RoHS Declaration of Conformity (DoC) | 2021/10/21 |
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 36V 的輸入電壓驅動高達 3A 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 2.6mm × 2.6mm 強化型 HotRod™ QFN 封裝，提供低 EMI 解決方案尺寸。
TIDA-050071 — 車用離電池處理器電源參考設計，適用於 ADAS 與資訊娛樂系統
| 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
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。