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LM5002

現行

3.1-75V 大範圍 Vin、0.5A 電流模式升壓、返馳 Sepic 轉換器

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裝置不同
LM51581 現行 具備雙隨機展頻的 1.5-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

產品詳細資料

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 75 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.26 Switch current limit (typ) (A) 0.5 Features Enable, Frequency synchronization, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0031 Duty cycle (max) (%) 85
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 75 Vin (min) (V) 3.1 Vout (max) (V) 75 Vout (min) (V) 1.26 Switch current limit (typ) (A) 0.5 Features Enable, Frequency synchronization, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0031 Duty cycle (max) (%) 85
SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (NGT) 8 16 mm² 4 x 4
  • Integrated 75-V N-channel MOSFET
  • Ultra-wide input voltage range from 3.1 V to 75 V
  • Integrated high voltage bias regulator
  • Adjustable output voltage
  • 1.5% output voltage accuracy
  • Current mode control with selectable compensation
  • Wide bandwidth error amplifier
  • Integrated current sensing and limiting
  • Integrated slope compensation
  • 85% maximum duty cycle limit
  • Single resistor oscillator programming
  • Oscillator synchronization capability
  • Enable and undervoltage lockout (UVLO) pin
  • 8-pin SOIC package
  • 8-pin WSON package
  • Thermal shutdown with hysteresis
  • Integrated 75-V N-channel MOSFET
  • Ultra-wide input voltage range from 3.1 V to 75 V
  • Integrated high voltage bias regulator
  • Adjustable output voltage
  • 1.5% output voltage accuracy
  • Current mode control with selectable compensation
  • Wide bandwidth error amplifier
  • Integrated current sensing and limiting
  • Integrated slope compensation
  • 85% maximum duty cycle limit
  • Single resistor oscillator programming
  • Oscillator synchronization capability
  • Enable and undervoltage lockout (UVLO) pin
  • 8-pin SOIC package
  • 8-pin WSON package
  • Thermal shutdown with hysteresis

The LM5002 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage boost, flyback, SEPIC and forward converters, using few external components. This easy to use regulator integrates a 75-V N-Channel MOSFET with a 0.5-A peak current limit. Current mode control provides inherently simple loop compensation and line-voltage feed-forward for superior rejection of input transients. The switching frequency is set with a single resistor and is programmable up to 1.5 MHz. The oscillator can also be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown, undervoltage lockout and remote shutdown capability. The device is available in both 8-pin SOIC and 8-pin WSON packages. To create a custom regulator design, use the LM5002 with WEBENCH® Power Designer.

The LM5002 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage boost, flyback, SEPIC and forward converters, using few external components. This easy to use regulator integrates a 75-V N-Channel MOSFET with a 0.5-A peak current limit. Current mode control provides inherently simple loop compensation and line-voltage feed-forward for superior rejection of input transients. The switching frequency is set with a single resistor and is programmable up to 1.5 MHz. The oscillator can also be synchronized to an external clock. Additional protection features include: current limit, thermal shutdown, undervoltage lockout and remote shutdown capability. The device is available in both 8-pin SOIC and 8-pin WSON packages. To create a custom regulator design, use the LM5002 with WEBENCH® Power Designer.

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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet LM5002 Wide Input Voltage Switch Mode Regulator datasheet (Rev. F) PDF | HTML 2021年 5月 6日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
White paper Wide VIN power management ICs simplify white paper (Rev. A) 2013年 9月 19日
User guide AN-1736 LM3433 HB LED Driver Evaluation Kit (Rev. C) 2013年 5月 3日
User guide AN-2041 LM3434 20A Evaluation Board (Rev. B) 2013年 5月 3日
User guide Small Split Rail Isolated + - 5V Power Supply Generator User Guide 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)。

模擬型號

LM5002 PSpice Transient Model

SNVM392.ZIP (247 KB) - PSpice Model
模擬型號

LM5002 TINA-TI LOAD Transient Reference Design

SNVM531.TSC (421 KB) - TINA-TI Reference Design
模擬型號

LM5002 TINA-TI STARTUP Reference Design

SNVM530.TSC (450 KB) - TINA-TI Reference Design
模擬型號

LM5002 TINA-TI Transient Spice Model

SNVM532.ZIP (18 KB) - TINA-TI Spice Model
模擬型號

LM5002 Unencrypted PSpice Transient Model

SNVM952.ZIP (3 KB) - PSpice Model
計算工具

FLYBUCK-FLYBACK-DESIGN-CALC Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

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參考設計

TIDA-03031 — 適用於 25W PLC 控制器單元的輸入保護和備用電源參考設計

TIDA-03031 參考設計為典型 PLC 控制器單元中的輸入電源路徑保護及備用電源設計提供解決方案。其以完全整合的保護電路取代傳統使用的離散電路實作方式。
Design guide: PDF
電路圖: PDF
參考設計

PMP20967 — 適用於瞬態測試的可調整的雙級定電流負載參考設計

這套可調式雙級定電流負載參考設計,可協助工程師利用特殊功能及簡易操作來測試電源供應器輸出負載瞬態回應。其電路板爲低電平和高電平提供負載瞬態調整,電壓轉換率可高達 100 A/µs。電路板上還設計了時序調整,如時間週期、延遲和脈衝寬度。
Test report: PDF
參考設計

TIDA-00782 — 使用 DLP® 技術的可攜式、高亮度 HD 投影顯示參考設計

This reference design, featuring the DLP Pico™ 0.45-inch WXGA display chipset enables use of HD resolution for projection display applications such as accessory projectors, smart projectors, mobile Smart TV, built in projectors like projection functionality inside notebooks, laptops and hot (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
WSON (NGT) 8 Ultra Librarian

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  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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