LM3151

現行

具 3.3V 輸出和可調式切換頻率的 42V 同步降壓控制器

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,但引腳輸出與所比較的產品不同
LM25148 現行 具有超低 IQ 的 42-V 同步降壓 DC/DC 控制器 Improved EMI performance with QFN package and dual random spread spectrum.

產品詳細資料

Vin (min) (V) 6 Vin (max) (V) 42 Iout (max) (A) 12 Operating temperature range (°C) -40 to 125 Control mode COT with emulated ripple Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 3.3 Features Enable, Synchronous Rectification, Tracking Iq (typ) (µA) 3600 Duty cycle (max) (%) 90 Number of phases 1
Vin (min) (V) 6 Vin (max) (V) 42 Iout (max) (A) 12 Operating temperature range (°C) -40 to 125 Control mode COT with emulated ripple Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 3.3 Features Enable, Synchronous Rectification, Tracking Iq (typ) (µA) 3600 Duty cycle (max) (%) 90 Number of phases 1
HTSSOP (PWP) 14 32 mm² 5 x 6.4

  • PowerWise ® step-down controller
  • 6V to 42V Wide input voltage range
  • Fixed output voltage of 3.3V
  • Fixed switching frequencies of 250 kHz/500 kHz/750 kHz
  • No loop compensation required
  • Fully WEBENCH ® enabled
  • Low external component count
  • Constant On-Time control
  • Ultra-Fast transient response
  • Stable with low ESR capacitors
  • Output voltage pre-bias startup
  • Valley current limit
  • Programmable soft-start

  • Typical Applications

  • Telecom
  • Networking Equipment
  • Routers
  • Security Surveillance
  • Power Modules

  • PowerWise ® step-down controller
  • 6V to 42V Wide input voltage range
  • Fixed output voltage of 3.3V
  • Fixed switching frequencies of 250 kHz/500 kHz/750 kHz
  • No loop compensation required
  • Fully WEBENCH ® enabled
  • Low external component count
  • Constant On-Time control
  • Ultra-Fast transient response
  • Stable with low ESR capacitors
  • Output voltage pre-bias startup
  • Valley current limit
  • Programmable soft-start

  • Typical Applications

  • Telecom
  • Networking Equipment
  • Routers
  • Security Surveillance
  • Power Modules

  • The LM3151/2/3 SIMPLE SWITCHER ® Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. Operating with an input voltage range from 6V-42V, the LM3151/2/3 features a fixed output voltage of 3.3V, and features switching frequencies of 250 kHz, 500 kHz, and 750 kHz. The synchronous architecture provides for highly efficient designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated Ripple Mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity.

    Fault protection features such as thermal shutdown, under-voltage lockout, over-voltage protection, short-circuit protection, current limit, and output voltage pre-bias startup allow for a reliable and robust solution.

    The LM3151/2/3 SIMPLE SWITCHER ® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH ® online design tool. WEBENCH ® provides design support for every step of the design process and includes features such as external component calculation with a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping.


    The LM3151/2/3 SIMPLE SWITCHER ® Controller is an easy to use and simplified step down power controller capable of providing up to 12A of output current in a typical application. Operating with an input voltage range from 6V-42V, the LM3151/2/3 features a fixed output voltage of 3.3V, and features switching frequencies of 250 kHz, 500 kHz, and 750 kHz. The synchronous architecture provides for highly efficient designs. The LM3151/2/3 controller employs a Constant On-Time (COT) architecture with a proprietary Emulated Ripple Mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple. The Constant On-Time (COT) regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity.

    Fault protection features such as thermal shutdown, under-voltage lockout, over-voltage protection, short-circuit protection, current limit, and output voltage pre-bias startup allow for a reliable and robust solution.

    The LM3151/2/3 SIMPLE SWITCHER ® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH ® online design tool. WEBENCH ® provides design support for every step of the design process and includes features such as external component calculation with a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping.


    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 7
    類型 標題 日期
    * Data sheet LM3151/52/53 SIMPLE SWITCHER CONTROLLER, High Input Voltage Sync Step-Down datasheet (Rev. G) 2011年 3月 4日
    White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024年 4月 30日
    Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
    EVM User's guide AN-1900 LM3150 Evaluation Boards (Rev. D) 2013年 5月 1日
    Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
    Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 2013年 4月 23日
    Design guide SIMPLE SWITCHER® Design Guide 2011年 4月 11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

    LM3152-3.3DEMO — LM3152 - RD-164 - 展示板

    The LM3152-3.3 demonstration board is a part of the PowerWise® family of SIMPLE SWITCHER® Controllers. It has been designed to balance solution size and performance. The Constant-On-Time (COT) Emulated Ripple Mode (ERM) Control allows for the use of low ESR output capacitors and therefore (...)

    使用指南: PDF
    TI.com 無法提供
    計算工具

    LM315XQUICK-CALC — LM315x 快速入門 Simple Switcher 控制器元件計算機

    封裝 針腳 CAD 符號、佔位空間與 3D 模型
    HTSSOP (PWP) 14 Ultra Librarian

    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

    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