首頁 電源管理 AC/DC 和 DC/DC 轉換器 (整合式 FET)
首頁
電源管理
AC/DC 和 DC/DC 轉換器 (整合式 FET)
最新

LMR51440-Q1

現行

具有低 Iq 的車用、36V、4A 同步降壓轉換器

立即訂購
產品規格表

LMR51440-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 4 Vin (max) (V) 38 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Power good, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25 Duty cycle (max) (%) 97.4
Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 4 Vin (max) (V) 38 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Light Load Efficiency, Power good, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25 Duty cycle (max) (%) 97.4
WSON (DRR) 12 9 mm² 3 x 3
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 4A or 5A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements:
    • Wide input voltage range: 4V to 36V
    • 4A or 5A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1MHz
    • Frequency spread spectrum
    • Protection features:
      • Precision enable input
      • Open-drain PGOOD
      • VIN undervoltage lockout (UVLO)
      • Cycle-by-cycle current limiting
      • Short-circuit protection with hiccup mode
      • Thermal shutdown
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • PFM and FPWM options in pin-to-pin compatible package
  • Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer

The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0-Q1 is available in a WSON-12 package.

The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (FPWM version) to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allows the device to be used with minimum external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0-Q1 is available in a WSON-12 package.
filter 尋找其它 AC/DC 和 DC/DC 轉換器 (整合式 FET)
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 2
類型 標題 日期
* Data sheet LMR514x0-Q1 36V, 4A / 5A , Automotive, Synchronous Buck Converter With Low IQ datasheet PDF | HTML 2024年 8月 20日
Functional safety information LMR51440-Q1 and LMR51450-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2024年 8月 13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

LMR51450EVM — LMR51450 同步降壓轉換器評估模組

LMR51450 評估模組 (EVM) 的設計旨在協助客戶評估 LMR51450 同步降壓電壓轉換器的性能。此 EVM 以 12 針腳 WSON 封裝實作 LMR51450。EVM 能夠在非常小的解決方案尺寸中以高效率和輸出準確度來提供 5 V 或 3.3 V 輸出電壓，和高達 5 A 負載電流。
使用指南: PDF | HTML
TI.com 無法提供
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DRR) 12 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

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

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片