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DC/DC 轉換器

LMR51425

現行

具有低 Iq 的 36V 2.5A 同步降壓轉換器

立即訂購
產品規格表

LMR51425

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 36 Vin (min) (V) 4.5 Vout (max) (V) 38 Vout (min) (V) 0.6 Features EMI Tested, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 36 Vin (min) (V) 4.5 Vout (max) (V) 38 Vout (min) (V) 0.6 Features EMI Tested, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00004 Duty cycle (max) (%) 98
WSON (DRR) 12 9 mm² (3 mm × 3 mm)
  • Functional Safety-Capable
  • Configured for rugged industrial applications:
    • Wide input voltage range: 4V to 36V
    • Continuous output current: 2.5A or 3.5A
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1.1MHz
    • 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 LMR514x5 with the WEBENCH Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications:
    • Wide input voltage range: 4V to 36V
    • Continuous output current: 2.5A or 3.5A
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75ns (typical)
    • Low quiescent current: 25µA
    • Adjustable frequency: 200kHz to 1.1MHz
    • 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 LMR514x5 with the WEBENCH Power Designer

The LMR514x5 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 2.5A or 3.5A 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 LMR514x5 features adjustable switching frequency from 200kHz to 1.1MHz 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 LMR514x5 is available in a WSON-12 package.

The LMR514x5 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 2.5A or 3.5A 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 LMR514x5 features adjustable switching frequency from 200kHz to 1.1MHz 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 LMR514x5 is available in a WSON-12 package.
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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 LMR514x5 36V, 2.5A / 3.5A , Synchronous Buck Converter With Low IQ datasheet PDF | HTML 2024/9/26
功能安全資訊 LMR51425 and LMR51435 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2024/8/13

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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。
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參考設計

TIDA-011002 — 符合成本效益的 IO-Link 主要模組參考設計

此參考設計透過實作 8 埠 IO-Link 閘道，支援高達 400μs 週期時間、COM3、L+ 每個埠 1A，以及額外的 DI/DO，以加快 IO-Link 控制器閘道的開發速度。此設計支援各種基於乙太網路的工業通訊協議，例如 EtherCAT®、PROFINET®、EtherNet/IP 和 Modbus® 傳輸控制協定 (TCP)，使用 AM261x 整合式工業通訊子系統 (ICSS)。硬體設計經過測試與開發，符合業界標準 EMI/EMC 要求。

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