主页 电源管理 AC/DC 和 DC/DC 转换器（集成 FET）
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AC/DC 和 DC/DC 转换器（集成 FET）

LM2591HV

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SIMPLE SWITCHER 电源转换器 150 kHz 1A 降压电压稳压器

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open-in-new 比较替代产品
功能与比较器件相同，但引脚排列有所不同
LMR36510 正在供货 具有 26uA IQ 的 SIMPLE SWITCHER® 4.2V 至 65V、1A 同步降压转换器 Newer device with higher Fsw, better efficiency, lower EMI and lower IQ.
TPSM5601R5H 正在供货 采用增强型 Hotrod™ QFN 封装的 60V 输入、1V 至 16V 输出、1.5A 电源模块 Save board space, simplify design and speed time to market with an integrated-inductor power module.

LM2591HV

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产品详情

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 1000 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 1000 Duty cycle (max) (%) 100
TO-220 (NDH) 5 86.0552 mm² 10.16 x 8.47 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • 3.3-V, 5-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.2 V
    to 57 V ±4% Maximum Over Line and Load
    Conditions
  • Specified 1-A Output Load Current
  • Available in 5-Pin Package
  • Input Voltage Range Up to 60 V
  • 150-kHz Fixed Frequency Internal Oscillator
  • ON and OFF Control
  • Low Power Standby Mode, IQ Typically 90 µA
  • High Efficiency
  • Thermal Shutdown and Current-Limit Protection
  • 3.3-V, 5-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.2 V
    to 57 V ±4% Maximum Over Line and Load
    Conditions
  • Specified 1-A Output Load Current
  • Available in 5-Pin Package
  • Input Voltage Range Up to 60 V
  • 150-kHz Fixed Frequency Internal Oscillator
  • ON and OFF Control
  • Low Power Standby Mode, IQ Typically 90 µA
  • High Efficiency
  • Thermal Shutdown and Current-Limit Protection

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, and a fixed-frequency oscillator.

The LM2591HV operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-pin package with several different lead bend options, and a 5-pin surface mount package.

Other features include a specified ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90-µA standby current. Self-protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, and a fixed-frequency oscillator.

The LM2591HV operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-pin package with several different lead bend options, and a 5-pin surface mount package.

Other features include a specified ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90-µA standby current. Self-protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM2591HV SIMPLE SWITCHER Power Converter 150-kHz, 1-A Step-Down Voltage Regulator 数据表 (Rev. E) PDF | HTML 2016年 5月 27日
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年 4月 24日
技术文章 How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016年 6月 13日
技术文章 The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 2016年 4月 19日
技术文章 Advantages of leaded packages in robust industrial designs PDF | HTML 2016年 3月 8日
应用手册 Cap Drop Offline Supply for E-Meters 2015年 6月 16日
应用手册 Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A) 2015年 6月 16日
应用手册 Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
应用手册 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
应用手册 AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B) 2013年 4月 23日
应用手册 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
应用手册 AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
应用手册 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
应用手册 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
应用手册 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
应用手册 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
应用手册 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
应用手册 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
应用手册 Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 2007年 3月 21日
应用手册 Input and Output Capacitor Selection 2005年 9月 19日
更多文献资料 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
应用手册 AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日

设计和开发

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仿真模型

LM2591HV-ADJ Unencrypted PSpice Transient Model

SNVMAK6.ZIP (2 KB) - PSpice Model
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仿真模型

LM2591HV-ADJ Unencrypted PSpice Transient Model Package (Rev. A)

SNVMAK7A.ZIP (56 KB) - PSpice Model
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封装 引脚 CAD 符号、封装和 3D 模型
TO-220 (NDH) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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