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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)
»信頼性データを表示する
»材料組成を表示
»製品変更通知 (4)
Product Overview
製品説明
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.
特長
 
  • 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
アプリケーション
  • 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
技術資料 & デザイン・リソース
デザイン・ノート (1) パッケージ図 (3)
データシート (1)  
供給状況 & サンプル
製品
状態
Compliance
内容
外形
MSL*
梱包形態
予算 価格/Unit
タイプ
Case Outline
タイプ
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
面実装デバイスためのモイスチャー・レベル(260°Cリフローでの鉛フリー測定、235°Cリフローでの鉛フリー以外測定)
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : 2 to 4
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 5,600
マーケットリードタイム(週) : 2 to 4
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 800
PandS   (2015-07-09) : <100
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : 4 to 8
Avnet   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 4 to 8
Mouser   (2015-07-09) : <1K
マーケットリードタイム(週) : 4 to 8
Avnet   (2015-07-09) : >1K
Digikey   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
PandS   (2015-07-09) : <1K
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : 2 to 4
Mouser   (2015-07-09) : <1K
ON Semiconductor   (2015-07-08) : 1,300
マーケットリードタイム(週) : Contact Factory
PandS   (2015-07-09) : <100
マーケットリードタイム(週) : 4 to 8
FutureElectronics   (2015-07-09) : <1K
Mouser   (2015-07-09) : <1K
マーケットリードタイム(週) : 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
マーケットリードタイム(週) : 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)
»信頼性データを表示する
»材料組成を表示
»製品変更通知 (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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