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LM2575: Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A

Overview
Specifications
Datasheet: Buck Converter, Switching Regulator, Adjustable Output Voltage, 1.0 A
Rev. 11 (492.0kB)
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»查看材料成分
»产品更改通知 (4)
Product Overview
产品说明
The LM2575 series of 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 1.0 A loadwith excellent line and load regulation. These devices are available in fixedoutput voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

This 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 LM2575 are offered by several different inductor manufacturers.

Since the LM2575 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 by the LM2575 regulator is so low, that no heatsink is required or its size could be reduced dramatically.

The LM2575 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 of 1.23 V to 37 V +/-4%
    Maximum Over Line and Load Conditions
  • Guaranteed 1.0 A Output Current
  • Wide Input Voltage Range: 4.75 V to 40 V
  • 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 and High-Efficiency Step-Down (Buck) Regulators
  • Efficient Pre-Regulator for Linear Regulators
  • On-Card Switching Regulators
  • Positive to Negative Converters (Buck-Boost)
  • Negative Step-Up Converters
  • Power Supply for Battery Chargers
技术文档及设计资源
设计注释 (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
LM2575D2T-012G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V D2PAK-5 936A-02 1 Tube 50  
LM2575D2T-015G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V D2PAK-5 936A-02 1 Tube 50  
LM2575D2T-12R4G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V D2PAK-5 936A-02 1 Tape and Reel 800 $1.72
LM2575D2T-15R4G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V D2PAK-5 936A-02 1 Tape and Reel 800 Contact Sales Office
LM2575D2T-3.3G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V D2PAK-5 936A-02 1 Tube 50  
LM2575D2T-3.3R4G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V D2PAK-5 936A-02 1 Tape and Reel 800 $1.72
LM2575D2T-5G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V D2PAK-5 936A-02 1 Tube 50 $1.72
LM2575D2T-5R4G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V D2PAK-5 936A-02 1 Tape and Reel 800 $1.72
LM2575D2T-ADJG Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V D2PAK-5 936A-02 1 Tube 50 $1.72
LM2575D2T-ADJR4G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V D2PAK-5 936A-02 1 Tape and Reel 800 $1.72
LM2575T-12G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V TO-220-5 314D-04 NA Tube 50 $1.5333
LM2575T-15G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V TO-220-5 314D-04 NA Tube 50 Contact Sales Office
LM2575T-3.3G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V TO-220-5 314D-04 NA Tube 50 Contact Sales Office
LM2575T-5G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V TO-220-5 314D-04 NA Tube 50 $1.5333
LM2575T-ADJG Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V TO-220-5 314D-04 NA Tube 50 $1.5333
LM2575TV-005G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A TO-220-5 314B-05 NA Tube 50  
LM2575TV-012G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2575TV-15G Last Shipments 
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V TO-220-5 314B-05 NA Tube 50  
LM2575TV-3.3G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2575TV-5G Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V TO-220-5 314B-05 NA Tube 50 $1.5333
LM2575TV-ADJG Active
Pb-free
Halide free
Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 1.23 V to 37 V TO-220-5 314B-05 NA Tube 50 $1.5333
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) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
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) : 5,600
市场订货至交货的时间(周) : 2 to 4
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 800
PandS   (2015-07-09) : <100
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
Avnet   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
市场订货至交货的时间(周) : 4 to 8
Arrow   (Sat Jul 11 07:46:48 MST 2015) : 250
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) : 4 to 8
Arrow   (Sat Jul 11 07:46:48 MST 2015) : 800
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) : 4 to 8
Mouser   (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) : <1K
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) : <100
ON Semiconductor   (2015-07-08) : 25,050
PandS   (2015-07-09) : <1K
市场订货至交货的时间(周) : 2 to 4
Arrow   (Sat Jul 11 07:46:48 MST 2015) : 450
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 1,700
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) : 1,750
PandS   (2015-07-09) : >1K
市场订货至交货的时间(周) : 2 to 4
Arrow   (Sat Jul 11 07:46:48 MST 2015) : 550
Avnet   (2015-07-09) : >1K
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 56,500
PandS   (2015-07-09) : >10K
市场订货至交货的时间(周) : 2 to 4
Arrow   (Sat Jul 11 07:46:48 MST 2015) : 50
Avnet   (2015-07-09) : <1K
Digikey   (2015-07-09) : >1K
FutureElectronics   (2015-07-09) : >1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 20,250
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) : 2 to 4
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 1,300
市场订货至交货的时间(周) : Contact Factory
PandS   (2015-07-09) : <100
市场订货至交货的时间(周) : 4 to 8
FutureElectronics   (2015-07-09) : <1K
Mouser   (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) : 1,250
市场订货至交货的时间(周) : 8 to 12
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : <100
Datasheet: Buck Converter, Switching Regulator, Adjustable Output Voltage, 1.0 A
Rev. 11 (492.0kB)
»浏览可靠性数据
»查看材料成分
»产品更改通知 (4)
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, Adjustable Output Voltage, 1.0 A, 12 V   Step-Down   Voltage Mode   7   40   12   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V   Step-Down   Voltage Mode   7   40   15   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V   Step-Down   Voltage Mode   7   40   3.3   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V   Step-Down   Voltage Mode   7   40   5   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V   Step-Down   Voltage Mode   7   40   5   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V   Step-Down   Voltage Mode   7   40   1.23 to 37   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V   Step-Down   Voltage Mode   7   40   1.23 to 37   1   85   52   D2PAK-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V   Step-Down   Voltage Mode   7   40   12   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 15 V   Step-Down   Voltage Mode   7   40   15   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V   Step-Down   Voltage Mode   7   40   3.3   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V   Step-Down   Voltage Mode   7   40   5   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, Adjustable 1.23 V to 37 V   Step-Down   Voltage Mode   7   40   1.23 to 37   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 12 V   Step-Down   Voltage Mode   7   40   12   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 3.3 V   Step-Down   Voltage Mode   7   40   3.3   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 5.0 V   Step-Down   Voltage Mode   7   40   5   1   85   52   TO-220-5 
 Pb-free 
 Halide free 
 Active     Buck Regulator, Switching, Adjustable Output Voltage, 1.0 A, 1.23 V to 37 V   Step-Down   Voltage Mode   7   40   1.23 to 37   1   85   52   TO-220-5 
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