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LM2575: 降压稳压器,开关,可调输出电压,1.0 A

Datasheet: 1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
Rev. 11 (492.0kB)
产品概览
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LM2575 系列降压开关稳压器是单片集成电路,适用于步降开关稳压器(降压转换器)的简便设计。此系列的所有电路都可以驱动 1.0 A 负载,且具有卓越的线路和负载调节。此类器件提供 3.3 V、5.0 V、12 V、15 V 固定输出电压和可调输出版本。此降压开关稳压器适用于最大程度减少外部部件数量,可简化电源设计。适用于 LM2575 的标准电感器系列由若干不同电感器制造商提供。因为 LM2575 转换器是一款开关模式电源,其能效比受欢迎的三端子线性稳压器要高很多,尤其对于更高输入电压更是如此。在很多情况下,LM2575 稳压器的功耗非常低,以至于无需进行散热,或者其尺寸可以大幅减小。LM2575 功能包括指定输入电压和输出负载条件下保证输出电压的 4% 允差范围,振荡器频率为 +/-10%(0C 至 125C 范围为 +/-2%)。包含了外部关断,典型待机电流为 80 uA。输出开关包括按循环的电流限制以及高温关断,实现故障条件下的完整保护。
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
数据表 (1) 常见问题 (1)
封装图纸 (3)  
Availability & Samples
Specifications
Interactive Block Diagram
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
Temperature
类型
数量
LM2575D2T-012G Obsolete 
Pb-free
Halide free
LM2575, 12 V D2PAK-5 936A-02 1 260 Tube 50  
LM2575D2T-015G Obsolete 
Pb-free
Halide free
LM2575, 15 V D2PAK-5 936A-02 1 260 Tube 50  
LM2575D2T-12R4G Active
Pb-free
Halide free
LM2575, 12 V D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.21
LM2575D2T-15R4G Active
Pb-free
Halide free
LM2575, 15 V D2PAK-5 936A-02 1 260 Tape and Reel 800 Contact Sales Office
LM2575D2T-3.3G Obsolete 
Pb-free
Halide free
LM2575, 3.3 V D2PAK-5 936A-02 1 260 Tube 50  
LM2575D2T-3.3R4G Active
Pb-free
Halide free
LM2575, 3.3 V D2PAK-5 936A-02 1 260 Tape and Reel 800 $0.9636
LM2575D2T-5G Active
Pb-free
Halide free
LM2575, 5.0 V D2PAK-5 936A-02 1 260 Tube 50 $1.1166
LM2575D2T-5R4G Active
Pb-free
Halide free
LM2575, 5.0 V D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.21
LM2575D2T-ADJG Active
Pb-free
Halide free
LM2575, Adjustable 1.23 V to 37 V D2PAK-5 936A-02 1 260 Tube 50 $0.985
LM2575D2T-ADJR4G Active
Pb-free
Halide free
LM2575, Adjustable 1.23 V to 37 V D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.21
LM2575T-12G Active
Pb-free
Halide free
LM2575, 12 V TO-220-5 314D-04 NA Tube 50 $1.1733
LM2575T-15G Active
Pb-free
Halide free
LM2575, 15 V TO-220-5 314D-04 NA Tube 50 Contact Sales Office
LM2575T-3.3G Active
Pb-free
Halide free
LM2575, 3.3 V TO-220-5 314D-04 NA Tube 50 Contact Sales Office
LM2575T-5G Active
Pb-free
Halide free
LM2575, 5.0 V TO-220-5 314D-04 NA Tube 50 $1.1733
LM2575T-ADJG Active
Pb-free
Halide free
LM2575, Adjustable 1.23 V to 37 V TO-220-5 314D-04 NA Tube 50 $1.1733
LM2575TV-005G Obsolete 
Pb-free
Halide free
LM2575 TO-220-5 314B-05 NA Tube 50  
LM2575TV-012G Active
Pb-free
Halide free
LM2575, 12 V TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2575TV-15G Obsolete 
Pb-free
Halide free
LM2575, 15 V TO-220-5 314B-05 NA Tube 50  
LM2575TV-3.3G Active
Pb-free
Halide free
LM2575, 3.3 V TO-220-5 314B-05 NA Tube 50 Contact Sales Office
LM2575TV-5G Active
Pb-free
Halide free
LM2575, 5.0 V TO-220-5 314B-05 NA Tube 50 $0.9226
LM2575TV-ADJG Active
Pb-free
Halide free
LM2575, 1.23 V to 37 V TO-220-5 314B-05 NA Tube 50 $1.1733
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) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
PandS   (2020-09-14 00:00) : <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) : 17 to 20
市场订货至交货的时间(周) : 2 to 4
FutureElectronics   (2020-08-19 00:00) : <1K
Avnet   (2020-08-19 00:00) : <100
市场订货至交货的时间(周) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >1K
市场订货至交货的时间(周) : 2 to 4
Avnet   (2020-08-19 00:00) : <100
FutureElectronics   (2020-08-19 00:00) : <1K
市场订货至交货的时间(周) : 8 to 12
FutureElectronics   (2020-08-19 00:00) : >10K
PandS   (2020-09-14 00:00) : <1K
Avnet   (2020-08-19 00:00) : <1K
市场订货至交货的时间(周) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : <1K
市场订货至交货的时间(周) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
市场订货至交货的时间(周) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
FutureElectronics   (2020-08-19 00:00) : <100
市场订货至交货的时间(周) : 17 to 20
PandS   (2020-09-14 00:00) : >10K
Avnet   (2020-08-19 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >1K
市场订货至交货的时间(周) : 17 to 20
PandS   (2020-09-14 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >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) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
PandS   (2020-09-14 00:00) : <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) : 2 to 4
FutureElectronics   (2020-08-19 00:00) : <100
市场订货至交货的时间(周) : 17 to 20
Avnet   (2020-08-19 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : <100

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
VCC Min (V)
VCC Max (V)
VO Typ (V)
IO Typ (A)
Efficiency (%)
fSW Typ (kHz)
Package Type
LM2575D2T-12R4G  
 $1.21 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
1
85
52
D2PAK-5
LM2575D2T-15R4G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
15
1
85
52
D2PAK-5
LM2575D2T-3.3R4G  
 $0.9636 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
1
85
52
D2PAK-5
LM2575D2T-5G  
 $1.1166 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
1
85
52
D2PAK-5
LM2575D2T-5R4G  
 $1.21 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
1
85
52
D2PAK-5
LM2575D2T-ADJG  
 $0.985 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
1
85
52
D2PAK-5
LM2575D2T-ADJR4G  
 $1.21 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
1
85
52
D2PAK-5
LM2575T-12G  
 $1.1733 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
1
85
52
TO-220-5
LM2575T-15G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
15
1
85
52
TO-220-5
LM2575T-3.3G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
1
85
52
TO-220-5
LM2575T-5G  
 $1.1733 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
1
85
52
TO-220-5
LM2575T-ADJG  
 $1.1733 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
1
85
52
TO-220-5
LM2575TV-012G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
1
85
52
TO-220-5
LM2575TV-3.3G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
1
85
52
TO-220-5
LM2575TV-5G  
 $0.9226 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
1
85
52
TO-220-5
LM2575TV-ADJG  
 $1.1733 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
1
85
52
TO-220-5
外形
314D-04    314B-05    936A-02   
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