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LMR51450

現行

36-V、5-A 同步降壓轉換器

立即訂購
產品規格表

LMR51450

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 4 Vout (max) (V) 34 Vout (min) (V) 0.8 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000025 Duty cycle (max) (%) 96 TI functional safety category Functional Safety-Capable Sector Robotics
Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 36 Vin (min) (V) 4 Vout (max) (V) 34 Vout (min) (V) 0.8 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000025 Duty cycle (max) (%) 96 TI functional safety category Functional Safety-Capable Sector Robotics
WSON (DRR) 12 9 mm² (3 mm × 3 mm)
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Wide Input voltage range: 4 V to 36 V
    • 4-A or 5-A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75 ns (typical)
    • Low Quiescent current: 25 µA
    • Adjustable Frequency: 200 kHz to 1.1 MHz
    • Frequency spread spectrum (PFM variant)
    • 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
    • Low dropout mode operation
    • Junction temperature range: –40°C to 150°C
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Create a custom design using the LMR5144x0 with the WEBENCH® Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • Wide Input voltage range: 4 V to 36 V
    • 4-A or 5-A continuous output current
    • ±1.0% tolerance voltage reference at room temperature
    • Minimum switching-on time: 75 ns (typical)
    • Low Quiescent current: 25 µA
    • Adjustable Frequency: 200 kHz to 1.1 MHz
    • Frequency spread spectrum (PFM variant)
    • 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
    • Low dropout mode operation
    • Junction temperature range: –40°C to 150°C
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • WSON-12 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Create a custom design using the LMR5144x0 with the WEBENCH® Power Designer

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

The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and 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 is available in WSON-12 package.

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

The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and 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 is available in 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 LMR514x0, 36-V, 4-A/5-A Synchronous Step-Down DC/DC Converter With Low IQ datasheet PDF | HTML 2022/12/5
功能安全資訊 LMR51440 and LMR51450 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2022/11/21
證書 LMR51450EVM EU RoHS Declaration of Conformity (DoC) 2022/9/6

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
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TAS6501Q1EVM — TAS6501-Q1 評估模組

TAS65x1-Q1 評估模組 (EVM) 展示了具有整合式數位訊號處理 (DSP) 的 TAS6511-Q1 和 TAS6501-Q1 單通道 D 類放大器的所有特性。名為 PurePath™ Console 的圖形使用者介面 (GUI) 用於透過 USB 連接至 EVM。該 EVM 具有光纖和同軸 SPDIF 輸入、I2S、TDM 和透過 USB 介面的音訊輸入。
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開發板

TAS6511Q1EVM — TAS6511-Q1 評估模組

TAS6511-Q1 評估模組 (EVM) 展示了具有整合 DSP 的 TAS6511-Q1 單通道 D 類放大器的所有特性。使用 PurePath™ Console 3 圖形使用者介面 (GUI) 來透過 USB 介接至 EVM。該 EVM 具有光纖和同軸 SPDIF 輸入、I2S、TDM 和透過 USB 介面的音訊輸入。
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模擬型號

LMR51450 PSpice Transient Model

SNVMCB2.ZIP (2175 KB) - PSpice 模型
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計算工具

LMR51450-CALC — LMR51450 calculation tool

This is an Excel based quick calculation tool for the design of LMR51450 application circuit.
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參考設計

TIDA-010253 — 適用於儲能系統的電池控制單元參考設計

此參考設計為高電壓鋰離子 (Li-ion)、磷酸鐵鋰 (LiFePO4) 電池架的中央控制器。此設計提供適用於高電壓繼電器的驅動電路、通訊介面 (包括 RS-485、控制器區域網路 (CAN)、菊鍊與乙太網路)、濕度感測器的可擴充介面、高電壓類比轉數位轉換器 (ADC)，以及電流感測器。

此設計使用高性能微控制器進行開發和測試應用。這些功能讓此參考設計適用於高容量電池架應用的中央控制器。

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WSON (DRR) 12 Ultra Librarian
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