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LMR62421

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采用 SOT-23 封装的 SIMPLE SWITCHER、2.7V 至 5.5V、24V 输出电压、2.1A 升压转换器

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数据表

LMR62421

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产品详情

Rating Catalog Topology Boost Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 24 Vout (min) (V) 3 Switch current limit (typ) (A) 3 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.007 Duty cycle (max) (%) 96
Rating Catalog Topology Boost Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 24 Vout (min) (V) 3 Switch current limit (typ) (A) 3 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.007 Duty cycle (max) (%) 96
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) WSON (NGG) 6 9 mm² (3 mm × 3 mm)
  • 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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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LMR62421 SIMPLE SWITCHER ® 24Vout, 2.1A Step-Up Voltage Regulator in SOT-23 数据表 (Rev. B) 2013-4-4
应用手册 半导体和 IC 封装热指标 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2024-4-24
应用手册 升压转换器功率级的基本计算 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2022-11-11
选择指南 电源管理指南 2018 2018-7-31
技术文章 DC/DC converter datasheets- current limit - part two PDF | HTML 2016-9-5
技术文章 DC/DC converter datasheets: current limit - part one PDF | HTML 2016-8-29
技术文章 Quantifying the value of wide VIN PDF | HTML 2016-6-15
技术文章 DC/DC converter datasheets – System losses demystified PDF | HTML 2016-4-25
技术文章 DC/DC converter datasheets – System efficiency demystified PDF | HTML 2016-4-18
应用手册 Inverted SEPIC Made SIMPLE 2015-7-31
应用手册 Softstart Using Constant Current Constant Voltage Approach 2015-7-24
应用手册 Working With Boost Converters 2015-6-15
应用手册 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013-4-24
应用手册 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013-4-23
应用手册 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013-4-23
应用手册 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013-4-23
应用手册 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013-4-23
应用手册 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013-4-23
应用手册 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013-4-23
应用手册 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013-4-23
应用手册 Input and Output Capacitor Selection 2005-9-19
更多文献资料 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005-7-12
应用手册 AN-643 EMI/RFI Board Design (Rev. B) 2004-5-3
应用手册 了解开关模式电源中的升压功率级 1999-3-4

设计与开发

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The LMR62421 is a high frequency switching boost regulator which offers small size and high power conversion efficiency. The part operates at a 1.6MHz switching frequency. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in (...)

用户指南: PDF
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仿真模型

LMR62421 TINA-TI Transient Reference Design

SNVM625.ZIP (185 KB) - TINA-TI 参考设计
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仿真模型

LMR62421 TINA-TI Transient Spice Model

SNVM624.ZIP (14 KB) - TINA-TI Spice 模型
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仿真模型

LMR62421X PSpice Average Model

SNVM194.ZIP (48 KB) - PSpice 模型
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仿真模型

LMR62421X TINA-TI Average Reference Design

SNVM456.TSC (54 KB) - TINA-TI 参考设计
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仿真模型

LMR62421X Unencrypted PSpice Average Model

SNVM949.ZIP (1 KB) - PSpice 模型
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仿真模型

LMR62421X Unencrypted PSpice Transient Model

SNVM950.ZIP (2 KB) - PSpice 模型
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仿真模型

Unencrypted LMR62421X PSpice Transient Model (Rev. A)

SNVM195A.ZIP (170 KB) - PSpice 模型
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参考设计

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支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOT-23 (DBV) 5 Ultra Librarian
WSON (NGG) 6 Ultra Librarian
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