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AC/DC 和 DC/DC 轉換器 (整合式 FET)

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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open-in-new 比較替代產品
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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
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 73 Iq (typ) (µA) 500 Duty cycle (max) (%) 99
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 9 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Enable, Over Current Protection Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 73 Iq (typ) (µA) 500 Duty cycle (max) (%) 99
VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4
  • 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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類型 標題 日期
* Data sheet LM5007 75-V, 0.5-A DC/DC Buck Converter With 80-V Integrated Power MOSFET datasheet (Rev. H) PDF | HTML 2018年 11月 6日
Application note Stability Analysis and Design of COT Type-3 Ripple Circuit 2019年 3月 20日
Technical article Simplifying 100V wide VIN power conversion PDF | HTML 2016年 11月 11日
White paper Wide VIN power management ICs simplify white paper (Rev. A) 2013年 9月 19日
EVM User's guide AN-1298 LM5007 Evaluation Board (Rev. A) 2013年 4月 30日
Application note Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) 2013年 4月 30日
Application note Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) 2013年 4月 23日
More literature LM5007 Quick Start Calculator 2012年 1月 27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

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
TI.com 無法提供
模擬型號

LM5007 PSpice Transient Model

SNVM301.ZIP (84 KB) - PSpice Model
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模擬型號

LM5007 Unencrypted PSpice Transient Model

SNVMAL6.ZIP (2 KB) - PSpice Model
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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

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

This reference design is fully autonomous IEEE802.3at, Type-2 (30 W) Power-over-Ethernet (PoE) 4-port power sourcing equipment (PSE). An additional configuration of two non-standard, high-power ports (<60 W) is provided. Both configurations support gigabit Ethernet data pass through in (...)
電路圖: PDF
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。
Test report: PDF
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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