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LMR61428

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1.2V 至 14V、2.85A 2MHz 升压稳压器

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数据表

LMR61428

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数据表 立即订购

产品详情

Rating Catalog Topology Boost, SEPIC Vin (max) (V) 14 Vin (min) (V) 1.2 Vout (max) (V) 14 Vout (min) (V) 1.24 Switch current limit (typ) (A) 2.85 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0001 Duty cycle (max) (%) 70
Rating Catalog Topology Boost, SEPIC Vin (max) (V) 14 Vin (min) (V) 1.2 Vout (max) (V) 14 Vout (min) (V) 1.24 Switch current limit (typ) (A) 2.85 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0001 Duty cycle (max) (%) 70
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • 1.2V to 14V Input Voltage
  • Adjustable Output Voltage up to 14V
  • Switch Current up to 2.85A
  • Up to 2 MHz Switching Frequency
  • Low Shutdown Iq, <1µA
  • Cycle-by-Cycle Current Limiting
  • VSSOP Packaging (3.0 x 5.0 x 1.09mm)
  • WEBENCH Enabled

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.

  • 1.2V to 14V Input Voltage
  • Adjustable Output Voltage up to 14V
  • Switch Current up to 2.85A
  • Up to 2 MHz Switching Frequency
  • Low Shutdown Iq, <1µA
  • Cycle-by-Cycle Current Limiting
  • VSSOP Packaging (3.0 x 5.0 x 1.09mm)
  • WEBENCH Enabled

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 LMR61428 is a step-up DC-DC switching regulator for battery-powered and low input voltage systems that can achieve efficiencies up to 90%. It has a wide input voltage range from 1.2V to 14V and a possible regulated output voltage range of 1.24V to 14V. It has an internal 0.17Ω N-Channel MOSFET power switch.

The high switching frequency of up to 2MHz of the LMR61428 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA. The LMR61428 is available in a VSSOP-8 package.

The LMR61428 is a step-up DC-DC switching regulator for battery-powered and low input voltage systems that can achieve efficiencies up to 90%. It has a wide input voltage range from 1.2V to 14V and a possible regulated output voltage range of 1.24V to 14V. It has an internal 0.17Ω N-Channel MOSFET power switch.

The high switching frequency of up to 2MHz of the LMR61428 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA. The LMR61428 is available in a VSSOP-8 package.
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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 LMR61428 Low Input Voltage, Step-Up DC-DC Converter 数据表 (Rev. A) 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
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-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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评估板

LMR61428XMMEVM — LMR61428 评估模块

IntroductionThe LMR61428 evaluation module is designed to provide the power supply design engineer with a fully functional regulatordesign. The evaluation module takes the input from a single Li-Ion battery and boosts the voltage up to 5V at a constant loadcapability of 500mA. The switching (...)
用户指南: PDF
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仿真模型

LMR61428 TINA Transient Model

SNVM650.ZIP (16 KB) - TINA-TI Spice 模型
支持的产品和硬件
仿真模型

LMR61428 TINA Transient Reference Design

SNVM649.ZIP (62 KB) - TINA-TI 参考设计
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仿真模型

LMR61428 Unencrypted PSpice Transient Model

SNVM947.ZIP (3 KB) - PSpice 模型
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仿真模型

LMR61428 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM050A.ZIP (66 KB) - PSpice 模型
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封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGK) 8 Ultra Librarian
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