LMR66430-Q1

現行

具 1.5uA IQ 與低 EMI 的車用、36V、3A 同步降壓轉換器

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable
VQFN-FCRLF (RXB) 14 6.76 mm² 2.6 x 2.6
  • Functional Safety-Capable
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Optimized for low EMI requirements:
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
  • Greater than 85% efficiency at 1 mA
  • 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 42-V automotive load dump transients
    • Supports 3-VIN for automotive cold crank
  • Miniature design size and low component cost:
    • 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation
  • Functional Safety-Capable
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Optimized for low EMI requirements:
    • Dual random spread spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
  • Greater than 85% efficiency at 1 mA
  • 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 42-V automotive load dump transients
    • Supports 3-VIN for automotive cold crank
  • Miniature design size and low component cost:
    • 2.6-mm × 2.6-mm enhanced HotRod QFN package with wettable flanks
    • Internal control loop compensation

The LMR664x0-Q1 is a small 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMR664x0-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 1.5 µA at 13.5 VIN 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 pin-out. 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 (optimal pin FMEA). The rich feature set of the LMR664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.

The LMR664x0-Q1 is a small 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter in an enhanced HotRod QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMR664x0-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 1.5 µA at 13.5 VIN 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 pin-out. 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 (optimal pin FMEA). The rich feature set of the LMR664x0-Q1 is designed to simplify implementation for a wide range of automotive end equipment.

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類型 標題 日期
* Data sheet LMR664x0-Q1, 36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous, Automotive Step-Down Converter datasheet PDF | HTML 2023年 12月 8日
Functional safety information LMR66430, LMR66430-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2023年 11月 17日
EVM User's guide LMR66430-Q1 Evaluation Module User's Guide PDF | HTML 2023年 11月 1日
Certificate LMR66430-2EVM EU Declaration of Conformity (DoC) 2023年 5月 4日
Application brief Step-Down Converter Capacitor Integration Reducing Effort for CISPR 25 Class 5 Compliance PDF | HTML 2023年 1月 18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)。

開發板

LMR66430-2EVM — 適用於頻率為 2-Mhz 的 36-V、3-A 同步降壓轉換器的 LMR66430 評估模組

LMR66430-2 評估模組 (EVM) 是一個評估 LMR66430 降壓轉換器的平台,其中包含數個跨接器和測試點,可快速配置裝置,並測試其各種功能。除了評估 LMR66430 的電氣性能外,此 EVM 也應做為在終端使用者應用中運用電路設計與佈線圖的範例。

使用指南: PDF | HTML
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設計工具

LMR66430-2EVM Design Files

SNVR531.ZIP (4362 KB)
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

內含資訊:
  • 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
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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