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DC/DC 切換穩壓器
DC/DC 轉換器

LM5000

現行

3.1-40V 大範圍 Vin、2A 電流模式非同步升壓穩壓器

立即訂購
產品規格表

現在提供此產品的更新版本

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。
LM5158 現行 具備雙隨機展頻的 3-A、85-V、2.2-MHz 大範圍 VIN 升壓返馳及 SEPIC 轉換器 Newer device with higher Vout capability and higher switch current

LM5000

現行
立即訂購

產品詳細資料

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.259 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0021 Duty cycle (max) (%) 90
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.259 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0021 Duty cycle (max) (%) 90
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) WSON (NHQ) 16 25 mm² (5 mm × 5 mm)
  • 80V internal switch
  • Operating input voltage range of 3.1V to 40V
  • Pin selectable operating frequency
       300kHz/700kHz (-3)
       600kHz/1.3MHz (-6)
  • Adjustable output voltage
  • External compensation
  • Input undervoltage lockout
  • Softstart
  • Current limit
  • Over temperature protection
  • External shutdown
  • Small 16-Lead TSSOP or 16-Lead LLP package
  • 80V internal switch
  • Operating input voltage range of 3.1V to 40V
  • Pin selectable operating frequency
       300kHz/700kHz (-3)
       600kHz/1.3MHz (-6)
  • Adjustable output voltage
  • External compensation
  • Input undervoltage lockout
  • Softstart
  • Current limit
  • Over temperature protection
  • External shutdown
  • Small 16-Lead TSSOP or 16-Lead LLP package

    • The LM5000 is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/OFF control. There are two operating frequency ranges available. The LM5000-3 is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open). The LM5000-6 is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package.

    The LM5000 is a monolithic integrated circuit specifically designed and optimized for flyback, boost or forward power converter applications. The internal power switch is rated for a maximum of 80V, with a current limit set to 2A. Protecting the power switch are current limit and thermal shutdown circuits. The current mode control scheme provides excellent rejection of line transients and cycle-by-cycle current limiting. An external compensation pin and the built-in slope compensation allow the user to optimize the frequency compensation. Other distinctive features include softstart to reduce stresses during start-up and an external shutdown pin for remote ON/OFF control. There are two operating frequency ranges available. The LM5000-3 is pin selectable for either 300kHz (FS Grounded) or 700kHz (FS Open). The LM5000-6 is pin selectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package.

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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 LM5000 High Voltage Switch Mode Regulator datasheet (Rev. D) 2007/3/9
    選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
    應用說明 Automated Frequency Response Analyzer 2013/10/9
    白皮書 Wide VIN power management ICs simplify white paper (Rev. A) 2013/9/19
    白皮書 HV, Single-Chip DC/DC Reg Optimized for Flyback, Boost, or Frwd-Pwr Conv Apps 2003/10/1
    應用說明 HV, single IC DC/DC reg optimizd for flyback, boost, or forward pwr cnvrtr apps 2003/3/24

    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

    LM5000EVAL — 寬輸入電壓切換模式穩壓器評估模組

    使用指南: PDF
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    計算工具

    FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

    此工具協助電源供應工程師根據規格選擇正確的隔離式 DC-DC 拓撲結構。根據選擇的拓撲結構，計算機還會推薦適合設計的 IC。

    支援產品和硬體
    計算工具

    LM5000MATHCAD-CALC — LM5000 Mathcad 設計工具

    支援產品和硬體
    參考設計

    PMP7932 — 適用於工業偏壓電源的隔離返馳轉換器 - 參考設計

    PMP7932 是一款隔離式返馳式轉換器，支援 12Vin 至 24Vin 的輸入電壓，並提供 +12Vout @ 0.25A 及 -12V @ 0.25A 的雙極性輸出。

    支援產品和硬體
    封裝 針腳 CAD 符號、佔位空間與 3D 模型
    TSSOP (PW) 16 Ultra Librarian
    WSON (NHQ) 16 Ultra Librarian
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