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LM2576: Buck Regulator, Switching, 3.0 A, 15 V

Overview
Specifications
Datasheet: Buck Regulator, Switching, 3.0 A, 15 V
Rev. 8 (275.0kB)
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»查看材料成分
»产品更改通知 (7)
Product Overview
产品说明
The LM2576 Buck Switching Regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

The Buck Switching Regulator is designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers.

Since the LM2576 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically.

A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

The LM2576 features include a guaranteed +/-4% tolerance on output voltage within specified input voltages and output load conditions, and +/-10% on the oscillator frequency (+/-2% over 0C to 125C). External shutdown is included, featuring 80 uA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
特性
 
  • 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.23 to 37 V +/-4%
    Maximum Over Line and Load Conditions
  • Guaranteed 3.0 A Output Current
  • Wide Input Voltage Range
  • 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
  • Moisture Sensitivity Level (MSL) Equals 1
  • Pb-Free Packages are Available
应用
  • Simple High-Efficiency Step-Down (Buck) Regulator
  • Efficient Pre-Regulator for Linear Regulators
  • On-Card Switching Regulators
  • Positive to Negative Converter (Buck-Boost)
  • Negative Step-Up Converters
  • Power Supply for Battery Chargers
技术文档及设计资源
培训教材 (1) 封装图纸 (3)
数据表 (1)  
供货情况和样品
产品
状况
Compliance
具体说明
封装
MSL*
容器
预算价格 (1千个数量的单价)
类型
外形
类型
数量
LM2576D2T-005G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz D2PAK-5 936A-02 1 Tube 50 $1.9333
LM2576D2T-012G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz D2PAK-5 936A-02 1 Tube 50  
LM2576D2T-15G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz D2PAK-5 936A-02 1 Tube 50 $1.9333
LM2576D2T-3.3G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz D2PAK-5 936A-02 1 Tube 50  
LM2576D2T-ADJG Active 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz D2PAK-5 936A-02 1 Tube 50 $1.9333
LM2576D2T-ADJR4G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz D2PAK-5 936A-02 1 Tape and Reel 800 $1.9333
LM2576D2TR4-012G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz D2PAK-5 936A-02 1 Tape and Reel 800 $1.9333
LM2576D2TR4-3.3G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz D2PAK-5 936A-02 1 Tape and Reel 800 $1.9333
LM2576D2TR4-5G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz D2PAK-5 936A-02 1 Tape and Reel 800 $1.9333
LM2576T-005G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.8666
LM2576T-012G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.8666
LM2576T-15G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz TO-220-5 314D-04 NA Tube 50 Contact Sales Office
LM2576T-3.3G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.8666
LM2576T-ADJG Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.8666
LM2576TV-012G Active 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $1.8666
LM2576TV-015G Active
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2576TV-3.3G Active 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2576TV-5G Active 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $1.8666
LM2576TV-ADJG Active 
Pb-free
Halide free
Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $1.8666
表面贴装器件的潮湿敏感度等级(MSL)(260°C回流温度时测量无铅,235°C回流温度时测量含铅)
市场订货至交货的时间(周) : 4 to 8
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : >1K
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : 4 to 8
Arrow   (Sat Jul 11 07:58:32 MST 2015) : 3150
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : <100
市场订货至交货的时间(周) : Contact Factory
PandS   (2015-07-09) : <1K
市场订货至交货的时间(周) : 4 to 8
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >10K
Mouser   (2015-07-09) : >1K
市场订货至交货的时间(周) : 4 to 8
Arrow   (Sat Jul 11 07:58:32 MST 2015) : 2400
Avnet   (2015-07-09) : <1K
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : >1K
PandS   (2015-07-09) : >10K
市场订货至交货的时间(周) : 2 to 4
Digikey   (2015-07-09) : >1K
Mouser   (2015-07-09) : >1K
ON Semiconductor   (2015-07-08) : 17,600
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 4 to 8
Avnet   (2015-07-09) : <1K
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <100
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 8 to 12
Avnet   (2015-07-09) : <1K
Digikey   (2015-07-09) : >1K
Mouser   (2015-07-09) : >1K
ON Semiconductor   (2015-07-08) : 57,600
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 2 to 4
Arrow   (Sat Jul 11 07:58:33 MST 2015) : 575
Avnet   (2015-07-09) : <100
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 4,900
市场订货至交货的时间(周) : 2 to 4
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 26,800
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 2 to 4
Digikey   (2015-07-09) : >1K
FutureElectronics   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 800
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 2 to 4
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <100
ON Semiconductor   (2015-07-08) : 22,750
市场订货至交货的时间(周) : 4 to 8
Arrow   (Sat Jul 11 07:58:33 MST 2015) : 350
Avnet   (2015-07-09) : >1K
Digikey   (2015-07-09) : >1K
Mouser   (2015-07-09) : >1K
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 8 to 12
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
市场订货至交货的时间(周) : 8 to 12
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : <100
市场订货至交货的时间(周) : 2 to 4
ON Semiconductor   (2015-07-08) : 1,300
市场订货至交货的时间(周) : 4 to 8
Arrow   (Sat Jul 11 07:58:33 MST 2015) : 100
Avnet   (2015-07-09) : <1K
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
市场订货至交货的时间(周) : 8 to 12
Arrow   (Sat Jul 11 07:58:33 MST 2015) : 373
Digikey   (2015-07-09) : <1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : <100
Datasheet: Buck Regulator, Switching, 3.0 A, 15 V
Rev. 8 (275.0kB)
»浏览可靠性数据
»查看材料成分
»产品更改通知 (7)
Product Overview

Product Compliance Status Description Topology Control Mode VCC Min (V) VCC Max (V) VO Typ (V) IO Typ (A) Efficiency (%) fSW Typ (kHz) Package Type
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz   Step-Down   Voltage Mode   7   40   5   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz   Step-Down   Voltage Mode   7   40   15   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz   Step-Down   Voltage Mode   7   40   1.23 to 37   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz   Step-Down   Voltage Mode   7   40   1.23 to 37   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz   Step-Down   Voltage Mode   7   40   12   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz    Step-Down   Voltage Mode   7   40   3.3   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz    Step-Down   Voltage Mode   7   40   5   3   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz    Step-Down   Voltage Mode   7   40   5   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz    Step-Down   Voltage Mode   7   40   12   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz    Step-Down   Voltage Mode   7   40   15   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz    Step-Down   Voltage Mode   7   40   3.3   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz    Step-Down   Voltage Mode   7   40   1.23 to 37   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 12 V, 52 kHz    Step-Down   Voltage Mode   7   40   12   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 15.0 V, 52 kHz    Step-Down   Voltage Mode   7   40   15   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 3.3 V, 52 kHz    Step-Down   Voltage Mode   7   40   3.3   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, 5.0 V, 52 kHz    Step-Down   Voltage Mode   7   40   5   3   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, 3.0 A, 15 V, 3.0 A, Adjustable 1.23-37 V, 52 kHz    Step-Down   Voltage Mode   7   40   1.23 to 37   3   85   52   TO-220-5 
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