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DC/DC 切換穩壓器
DC/DC 轉換器

LM5007

現行

9-75V 大範圍 Vin、500mA 恒定導通時間非同步降壓穩壓器

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產品規格表

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LMR38010 現行 具 40-µA IQ 的 SIMPLE SWITCHER® 80-V、1.0-A、2.2-MHz 降壓轉換器 Smaller footprint, lower EMI, lower IQ, higher efficiency and spread spectrum.
TPSM365R6 現行 3-V 至 65-V 輸入、1-V 至 13-V 輸出、0.6-A 同步降壓轉換器電源模組 Smaller design with an integrated-inductor power module.

LM5007

現行
立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 75 Vin (min) (V) 9 Vout (max) (V) 73 Vout (min) (V) 2.5 Features Enable, Over Current Protection Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0005 Duty cycle (max) (%) 99
Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 75 Vin (min) (V) 9 Vout (max) (V) 73 Vout (min) (V) 2.5 Features Enable, Over Current Protection Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0005 Duty cycle (max) (%) 99
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) WSON (NGT) 8 16 mm² (4 mm × 4 mm)
  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • Internal High-Voltage VCC Regulator
    • Adjustable Output Voltage
    • High Efficiency Operation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop Compensation Required
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with Input Voltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • External Shutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer
  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • Internal High-Voltage VCC Regulator
    • Adjustable Output Voltage
    • High Efficiency Operation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop Compensation Required
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with Input Voltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • External Shutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

The LM5007 0.5-A step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. The device is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSON packages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no loop compensation and provides fast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This current limiting scheme ensures short-circuit protection while providing reduced load current foldback. Other protection features include thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and maximum duty cycle limiter.

The LM5007 0.5-A step-down switching converter features all of the functions needed to implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated 80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. The device is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSON packages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant with load and input voltage variations. The hysteretic control requires no loop compensation and provides fast transient response. An intelligent current limit is implemented with forced off-time that is inversely proportional to VOUT. This current limiting scheme ensures short-circuit protection while providing reduced load current foldback. Other protection features include thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and maximum duty cycle limiter.
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技術文件

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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 LM5007 75-V, 0.5-A DC/DC Buck Converter With 80-V Integrated Power MOSFET datasheet (Rev. H) PDF | HTML 2018/11/6
應用說明 Stability Analysis and Design of COT Type-3 Ripple Circuit 2019/3/20
技術文章 Simplifying 100V wide VIN power conversion PDF | HTML 2016/11/11
白皮書 Wide VIN power management ICs simplify white paper (Rev. A) 2013/9/19
應用說明 Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) 2013/4/30
應用說明 Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 2013/4/23

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

LM5007EVAL — 80V 廣泛 Vin 降壓式切換穩壓器評估板

LM5007 High Voltage (80 V) Step Down Switching Regulator

使用指南: PDF
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模擬型號

LM5007 PSpice Transient Model

SNVM301.ZIP (84 KB) - PSpice 模型
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模擬型號

LM5007 Unencrypted PSpice Transient Model

SNVMAL6.ZIP (2 KB) - PSpice 模型
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計算工具

LM5007QUICK-CALC — LM5007 快速入門計算機

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參考設計

PMP23320 — 500-W 交錯式 SEPIC 參考設計

此 500-W 交錯式 SEPIC 轉換器參考設計提供非隔離可調式 5V 至 110 V 輸出電壓，具有最大輸出電流為 5 A。主功率級使用兩個 LM5122 控制器為 SEPIC 的主要和次要相位供電。使用 LM5007 降壓轉換器產生本機 10 V 偏壓。

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參考設計

TIDA-00290 — PoE PSE 第 2 類 (30W) IEEE 802.3at 全自主四埠解決方案。

此參考設計為完全自主的 IEEE802.3at，2 型 (30W) 乙太網路供電 (PoE) 4 埠電源供應設備 (PSE)。另外還提供了兩個非標準高功率埠 (< 60W) 的配置。這兩種配置都支援 1000BASE-T 埠中的吉位元乙太網路資料傳遞。

此參考設計由兩個電路板組成：

  • 主機板 (TPS23861EVM-612)
  • 子板 (TPS23861EVM-613)

子板配備兩個 TPS23861 IEEE 802.3at PoE PSE 控制器裝置。主機板為子板提供多埠基本平台介面。此外，主機板還為兩個可選電路板提供介面：MSP-EXP430G2 LaunchPad™（若需要自訂電源管理可編程性）和 USB 轉 GPIO 介面轉接器（若需要基於 PC GUI 的電源管理配置）。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian
WSON (NGT) 8 Ultra Librarian
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