LM2594

正在供貨

元件數量較少的 SIMPLE SWITCHER® 40V、500mA 降壓穩壓器

可提供此產品的更新版本

open-in-new 比較替代產品
功能與比較器件相同，但引腳排列有所不同
LMR36506 正在供貨 具有 4μA IQ 的 3V 至 65V、0.6A 超小型同步降壓轉換器 Next-generation converter with smaller package size, greater efficiency, and lower quiescent current.
TPSM365R6 正在供貨 3-65V 輸入 1-13V 輸出 0.6A 同步降壓轉換器電源模塊 Next-generation with spread spectrum and frequency synchronization.

產品詳情

Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4.5 Vout (max) (V) 37 Vout (min) (V) 3.3 Features Enable, Overcurrent protection Control mode Voltage mode Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 5000 Duty cycle (max) (%) 100 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4.5 Vout (max) (V) 37 Vout (min) (V) 3.3 Features Enable, Overcurrent protection Control mode Voltage mode Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Operating temperature range (°C) -40 to 125 Iq (typ) (μA) 5000 Duty cycle (max) (%) 100 Type Converter
PDIP (P) 8 92.5083 mm2 9.81 x 9.43 SOIC (D) 8 29.4 mm2 4.9 x 6
  • New product available:
  • For faster time to market:
  • 3.3-V, 5-V, 12-V, and adjustable output versions
  • Adjustable version output voltage range: 1.2 V to 37 V (57-V for the HV version), ±4% maximum over line and load conditions
  • Available in 8-pin surface-mount SOIC and 8-pin PDIP packages
  • Ensured 0.5-A output current
  • Input voltage range up to 60 V
  • Requires only four external components
  • 150-kHz fixed-frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, I Q typically 85 μA
  • High efficiency
  • Uses readily-available standard inductors
  • Thermal shutdown and current-limit protection
  • Create a custom design using the LM2594HV with the WEBENCH Power Designer
  • New product available:
  • For faster time to market:
  • 3.3-V, 5-V, 12-V, and adjustable output versions
  • Adjustable version output voltage range: 1.2 V to 37 V (57-V for the HV version), ±4% maximum over line and load conditions
  • Available in 8-pin surface-mount SOIC and 8-pin PDIP packages
  • Ensured 0.5-A output current
  • Input voltage range up to 60 V
  • Requires only four external components
  • 150-kHz fixed-frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, I Q typically 85 μA
  • High efficiency
  • Uses readily-available standard inductors
  • Thermal shutdown and current-limit protection
  • Create a custom design using the LM2594HV with the WEBENCH Power Designer

The LM2594xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version, and are packaged in a 8-pin PDIP and a 8-pin surface-mount SOIC package.

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

The new product, LMR36506, offers reduced BOM cost, higher efficiency, and smaller solution size with many other features. See the Device Comparison Table to compare specs. Start WEBENCH Design with LMR36506.

A standard series of inductors (both through-hole and surface-mount types) are available from several different manufacturers optimized for use with the LM2594xx series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include an ensured ±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 85-µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

The LM2594HV is for applications requiring an input voltage up to 60 V.

The LM2594xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version, and are packaged in a 8-pin PDIP and a 8-pin surface-mount SOIC package.

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

The new product, LMR36506, offers reduced BOM cost, higher efficiency, and smaller solution size with many other features. See the Device Comparison Table to compare specs. Start WEBENCH Design with LMR36506.

A standard series of inductors (both through-hole and surface-mount types) are available from several different manufacturers optimized for use with the LM2594xx series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include an ensured ±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 85-µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

The LM2594HV is for applications requiring an input voltage up to 60 V.
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技術文檔

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類型 標題 下載最新的英語版本 日期
* 數據表 LM2594xx SIMPLE SWITCHER Power Converter, 150-kHz, 0.5-A, Step-Down Voltage Regulator 數據表 (Rev. F) PDF | HTML 2023年 5月 31日
應用手冊 半導體和 IC 封裝熱指標 (Rev. D) PDF | HTML 英語版 (Rev.D) PDF | HTML 2024年 4月 24日
技術文章 How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016年 6月 13日
技術文章 The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 2016年 4月 19日
技術文章 Advantages of leaded packages in robust industrial designs PDF | HTML 2016年 3月 8日
應用手冊 Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
應用手冊 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
應用手冊 AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B) 2013年 4月 23日
應用手冊 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
應用手冊 AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
應用手冊 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
應用手冊 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
應用手冊 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
應用手冊 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
應用手冊 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
應用手冊 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
應用手冊 Buck Converters Provide a Battery Charger and System Power 2007年 3月 21日
應用手冊 Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 2007年 3月 21日
應用手冊 Input and Output Capacitor Selection 2005年 9月 19日
更多文獻資料 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
應用手冊 AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

仿真模型

LM2594-ADJ PSpice Transient Model (Rev. A)

SNVMA69A.ZIP (82 KB) - PSpice Model
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仿真模型

LM2594-ADJ Unencrypted PSpice Transient Model (Rev. A)

SNVMA68A.ZIP (2 KB) - PSpice Model
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封裝 引腳 CAD 符號、封裝和 3D 模型
PDIP (P) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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