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AC/DC & DC/DC converters (integrated FET)

LMR62421

現行

SOT-23 中的 SIMPLE SWITCHER 2.7V 至 5.5V、24Vout、2.1A 升壓轉換器

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產品規格表

LMR62421

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Boost Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 1600 Features Enable, Nonsynchronous rectification Vout (min) (V) 3 Vout (max) (V) 24 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.007
Vin (min) (V) 2.7 Vin (max) (V) 5.5 Topology Boost Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 1600 Features Enable, Nonsynchronous rectification Vout (min) (V) 3 Vout (max) (V) 24 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.007
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 WSON (NGG) 6 9 mm² 3 x 3
  • Input Voltage Range of 2.7V to 5.5V
  • Output Voltage up to 24V
  • Switch Current up to 2.1A
  • 1.6 MHz Switching Frequency
  • Low Shutdown Iq, 80 nA
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • Internal Soft-Start
  • 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging
  • Fully Enabled for WEBENCH® Power Designer

Performance Benefits

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

All trademarks are the property of their respective owners.

  • Input Voltage Range of 2.7V to 5.5V
  • Output Voltage up to 24V
  • Switch Current up to 2.1A
  • 1.6 MHz Switching Frequency
  • Low Shutdown Iq, 80 nA
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • Internal Soft-Start
  • 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging
  • Fully Enabled for WEBENCH® Power Designer

Performance Benefits

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

All trademarks are the property of their respective owners.

The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.

The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.
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類型 標題 日期
* Data sheet LMR62421 SIMPLE SWITCHER ® 24Vout, 2.1A Step-Up Voltage Regulator in SOT-23 datasheet (Rev. B) 2013年 4月 4日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 2022年 10月 28日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article DC/DC converter datasheets- current limit - part two PDF | HTML 2016年 9月 5日
Technical article DC/DC converter datasheets: current limit - part one PDF | HTML 2016年 8月 29日
Technical article Quantifying the value of wide VIN PDF | HTML 2016年 6月 15日
Technical article DC/DC converter datasheets – System losses demystified PDF | HTML 2016年 4月 25日
Technical article DC/DC converter datasheets – System efficiency demystified PDF | HTML 2016年 4月 18日
Application note Inverted SEPIC Made SIMPLE 2015年 7月 31日
Application note Softstart Using Constant Current Constant Voltage Approach 2015年 7月 24日
Application note Working With Boost Converters 2015年 6月 15日
EVM User's guide AN-2197 LMR62421 Demo Board (Rev. A) 2013年 4月 26日
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
Application note Input and Output Capacitor Selection 2005年 9月 19日
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日
Application note Understanding Boost Power Stages In Switchmode Power Supplies 1999年 3月 4日

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使用指南: PDF
檢視選項
模擬型號

LMR62421 TINA-TI Transient Reference Design

SNVM625.ZIP (185 KB) - TINA-TI Reference Design
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模擬型號

LMR62421 TINA-TI Transient Spice Model

SNVM624.ZIP (14 KB) - TINA-TI Spice Model
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模擬型號

LMR62421X PSpice Average Model

SNVM194.ZIP (48 KB) - PSpice Model
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模擬型號

LMR62421X TINA-TI Average Reference Design

SNVM456.TSC (54 KB) - TINA-TI Reference Design
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模擬型號

LMR62421X Unencrypted PSpice Average Model

SNVM949.ZIP (1 KB) - PSpice Model
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模擬型號

LMR62421X Unencrypted PSpice Transient Model

SNVM950.ZIP (2 KB) - PSpice Model
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模擬型號

Unencrypted LMR62421X PSpice Transient Model (Rev. A)

SNVM195A.ZIP (170 KB) - PSpice Model
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參考設計

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Test report: PDF
電路圖: PDF
封裝 引腳 下載
SOT-23 (DBV) 5 檢視選項
WSON (NGG) 6 檢視選項
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