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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM2575HV

現行

SIMPLE SWITCHER 1A 降壓電壓穩壓器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
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功能相同，但引腳輸出與所比較的裝置不同
LMR36510 現行 具有 26-uA IQ 的 SIMPLE SWITCHER® 4.2-V 至 65-V、1-A 同步降壓轉換器 Higher Fsw, better efficiency, lower EMI and lower IQ.
TPSM5601R5 現行 採用 5-mm x 5.5-mm x 4-mm QFN 封裝的 4.2-V 至 60-V 輸入、1-V 至 6-V 輸出、1.5-A 降壓模組 Simplified design, smaller and speed time to market with an integrated-inductor power module.
TPSM5601R5H 現行 採用增強型 HotRod™ QFN 封裝的 60-V 輸入、1-V 至 16-V 輸出、1.5-A 電源模組 Save board space, simplify design and speed time to market with an integrated-inductor power module.

LM2575HV

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4 Vin (max) (V) 60 Switching frequency (min) (kHz) 42 Switching frequency (max) (kHz) 63 Features Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 10000 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4 Vin (max) (V) 60 Switching frequency (min) (kHz) 42 Switching frequency (max) (kHz) 63 Features Enable, Over Current Protection Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 10000 Duty cycle (max) (%) 98
PDIP (NBG) 16 189.051819 mm² 21.7551 x 8.69 SOIC (DW) 24 159.65 mm² 15.5 x 10.3 TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-220 (NDH) 5 86.0552 mm² 10.16 x 8.47 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range,
    •  1.23V to 37V (57V for HV Version) ±4% Max Over
    •  Line and Load Conditions
  • Specified 1A Output Current
  • Wide Input Voltage Range, 40V up to 60V for HV Version
  • Requires Only 4 External Components
  • 52 kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • P+ Product Enhancement Tested

All trademarks are the property of their respective owners.
  • 3.3V, 5V, 12V, 15V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range,
    •  1.23V to 37V (57V for HV Version) ±4% Max Over
    •  Line and Load Conditions
  • Specified 1A Output Current
  • Wide Input Voltage Range, 40V up to 60V for HV Version
  • Requires Only 4 External Components
  • 52 kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability, Low Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current Limit Protection
  • P+ Product Enhancement Tested

All trademarks are the property of their respective owners.

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

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

The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

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

The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
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類型 標題 日期
* Data sheet LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator datasheet (Rev. E) 2013年 4月 3日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Application note Switching regulator fundamentals (Rev. C) PDF | HTML 2019年 2月 5日
Application note Cap Drop Offline Supply for E-Meters 2015年 6月 16日
Application note Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A) 2015年 6月 16日
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12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-1197 Selecting Inductors for Buck Converters (Rev. B) 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

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模擬型號

LM2575HV PSpice Transient Model

SNVMB26.ZIP (45 KB) - PSpice Model
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模擬型號

LM2575HV Unencrypted PSpice Transient Model

SNVMB25.ZIP (2 KB) - PSpice Model
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
PDIP (NBG) 16 Ultra Librarian
SOIC (DW) 24 Ultra Librarian
TO-220 (KC) 5 Ultra Librarian
TO-220 (NDH) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
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