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LMR62014

現行

採用 SOT-23 封裝的 SIMPLE SWITCHER® 2.7V 至 14V、1.4A 升壓穩壓器

現在提供此產品的更新版本

open-in-new 比較替代產品
針腳對針腳的功能與所比較的裝置相同。
TLV61047 現行 採用 SOT23-5 DDC 封裝的 20V 輸入電壓、28V 輸出電壓、2.2A 非同步升壓轉換器 Wider input voltage and higher efficiency.

產品詳細資料

Rating Catalog Topology Boost Vin (max) (V) 14 Vin (min) (V) 2.7 Vout (max) (V) 20 Vout (min) (V) 3 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.002 Duty cycle (max) (%) 93
Rating Catalog Topology Boost Vin (max) (V) 14 Vin (min) (V) 2.7 Vout (max) (V) 20 Vout (min) (V) 3 Switch current limit (typ) (A) 2 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.002 Duty cycle (max) (%) 93
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Input Voltage Range of 2.7V to 14V
  • Output Voltage up to 20V
  • Switch Current up to 1.4A
  • 1.6 MHz Switching Frequency
  • Low Shutdown Iq, <1 µA
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • 5-Pin SOT-23 Packaging (2.92 x 2.84 x 1.08mm)
  • Fully Enabled for WEBENCH Power Designer

Performance Benefits

  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • Input Voltage Range of 2.7V to 14V
  • Output Voltage up to 20V
  • Switch Current up to 1.4A
  • 1.6 MHz Switching Frequency
  • Low Shutdown Iq, <1 µA
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • 5-Pin SOT-23 Packaging (2.92 x 2.84 x 1.08mm)
  • Fully Enabled for WEBENCH Power Designer

Performance Benefits

  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LMR62014 switching regulator is a current-mode boost converter operating at fixed frequency of
1.6 MHz.

The use of SOT-23 package, made possible by the minimal power loss of the internal 1.4A switch, and use of small inductors and capacitors result in the industry's highest power density. The LMR62014 is capable of greater than 90% duty cycle, making it ideal for boosting to voltages up to 20V.

These parts have a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

The LMR62014 switching regulator is a current-mode boost converter operating at fixed frequency of
1.6 MHz.

The use of SOT-23 package, made possible by the minimal power loss of the internal 1.4A switch, and use of small inductors and capacitors result in the industry's highest power density. The LMR62014 is capable of greater than 90% duty cycle, making it ideal for boosting to voltages up to 20V.

These parts have a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

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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 LMR62014 SIMPLE SWITCHER ® 20Vout, 1.4A Step-Up Voltage Regulator in SOT-23 datasheet (Rev. B) 2013/4/4
應用說明 Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/3/25
應用說明 Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 2022/10/28
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
應用說明 Inverted SEPIC Made SIMPLE 2015/7/31
應用說明 Softstart Using Constant Current Constant Voltage Approach 2015/7/24
應用說明 Working With Boost Converters 2015/6/15
應用說明 Design of UVLO for LM27313 (Rev. B) 2014/4/8
應用說明 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/4/24
應用說明 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013/4/23
應用說明 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/4/23
應用說明 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/4/23
應用說明 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/4/23
應用說明 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/4/23
應用說明 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/4/23
應用說明 Input and Output Capacitor Selection 2005/9/19
更多文件說明 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/7/12
應用說明 AN-643 EMI/RFI Board Design (Rev. B) 2004/5/3
應用說明 Understanding Boost Power Stages In Switchmode Power Supplies 1999/3/4

設計與開發

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模擬型號

LMR62014 Unencrypted PSpice Transient Model

SNVM948.ZIP (2 KB) - PSpice 模型
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模擬型號

LMR62014 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM673A.ZIP (44 KB) - PSpice 模型
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參考設計

PMP20327 — 可變輸出 2 節電池 200W 加熱器元件功率級降壓/升壓參考設計

PMP20327 是一款同步 4 開關降壓升壓轉換器,採用 LM5175 控制器做為加熱器元件功率級,適用於電子菸等應用。可使用 FB 接腳上的修整電阻器,以 0.2V 至 3.1V 的偏壓電壓在 20A 至 45A 的範圍內選擇 1V 至 10V 的。此設計也使用非同步升壓穩壓器 LMR62014,在低 Vin 操作期間為 LM5175 提供偏壓電源。電流模式控制器內建 LM5175 逐脈衝電流限制。電路板具備啟用、同步與電源良好功能。此設計支援 0.1Ω 至 0.5Ω 的電阻加熱元件,以支援各種 200W 操作條件。
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參考設計

PMP20410 — 可變輸出單節電池 80W 加熱器元件功率級降壓/升壓參考設計

PMP20410 是一款同步 4 開關降壓升壓轉換器,採用 LM5175 控制器做為加熱器元件功率級,適用於電子菸等應用。可使用 FB 接腳上的修整電阻器,以 0.2V 至 3.1V 的偏壓電壓在 13A 至 28A 的範圍內選擇 1V 至 10V 的。此設計也使用非同步升壓穩壓器 LMR62014 為 LM5175 提供偏壓電源,以實現 2.7V 輸入運作。電流模式控制器內建 LM5175 逐脈衝電流限制。電路板具備啟用、同步與電源良好功能。此設計支援 0.1Ω 至 0.5Ω 的電阻加熱元件,可提供 80W 功率。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 5 Ultra Librarian

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