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

Datasheet: 3.0 A, 15 V, Step-Down Switching Regulator
Rev. 8 (275.0kB)
Product Overview
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» Product Change Notification
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.
Features
 
  • 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
Applications
  • 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
Technical Documentation & Design Resources
Tutorials (1) Package Drawings (3)
Data Sheets (1)  
Availability & Samples
Specifications
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
LM2576D2T-005G Active
Pb-free
Halide free
LM2576, 3.0 A, 5.0 V, 52 kHz D2PAK-5 936A-02 1 260 Tube 50 $1.168
LM2576D2T-012G Obsolete 
Pb-free
Halide free
LM2576, 3.0 A, 12 V, 52 kHz D2PAK-5 936A-02 1 260 Tube 50  
LM2576D2T-15G Active
Pb-free
Halide free
LM2576, 3.0 A, 15.0 V, 52 kHz D2PAK-5 936A-02 1 260 Tube 50 $1.2466
LM2576D2T-3.3G Obsolete 
Pb-free
Halide free
LM2576, 3.0 A, 3.3 V, 52 kHz D2PAK-5 936A-02 1 260 Tube 50  
LM2576D2T-ADJG Active
Pb-free
Halide free
LM2576, 3.0 A, Adjustable 1.23-37 V, 52 kHz D2PAK-5 936A-02 1 260 Tube 50 $1.2466
LM2576D2T-ADJR4G Active
Pb-free
Halide free
LM2576, 3.0 A, Adjustable 1.23-37 V, 52 kHz D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.2466
LM2576D2TR4-012G Active
Pb-free
Halide free
LM2576, 3.0 A, 12 V, 52 kHz D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.9333
LM2576D2TR4-3.3G Active
Pb-free
Halide free
LM2576, 3.0 A, 3.3 V, 52 kHz D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.9333
LM2576D2TR4-5G Active
Pb-free
Halide free
LM2576, 3.0 A, 5.0 V, 52 kHz D2PAK-5 936A-02 1 260 Tape and Reel 800 $1.2466
LM2576T-005G Active
Pb-free
Halide free
LM2576, 3.0 A, 5.0 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.1784
LM2576T-012G Active
Pb-free
Halide free
LM2576, 3.0 A, 12 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $0.9777
LM2576T-15G Active
Pb-free
Halide free
LM2576, 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
LM2576, 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
LM2576, 3.0 A, Adjustable 1.23-37 V, 52 kHz TO-220-5 314D-04 NA Tube 50 $1.21
LM2576TV-012G Active
Pb-free
Halide free
LM2576, 3.0 A, 12 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $0.9262
LM2576TV-015G Active
Pb-free
Halide free
LM2576, 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
LM2576, 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
LM2576, 3.0 A, 5.0 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $0.9262
LM2576TV-ADJG Active
Pb-free
Halide free
LM2576, 3.0 A, Adjustable 1.23-37 V, 52 kHz TO-220-5 314B-05 NA Tube 50 $1.21
Market Leadtime (weeks) : 2 to 4
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 17 to 20
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
Market Leadtime (weeks) : 13 to 16
FutureElectronics   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : 13 to 16
PandS   (2020-09-14 00:00) : >10K
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 8 to 12
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 8 to 12
PandS   (2020-09-14 00:00) : >1K
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : 17 to 20
Avnet   (2020-08-19 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 1,100
PandS   (2020-09-14 00:00) : >1K
FutureElectronics   (2020-08-19 00:00) : <1K
Avnet   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : 13 to 16
FutureElectronics   (2020-08-19 00:00) : <1K
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 2 to 4
Market Leadtime (weeks) : 17 to 20
Avnet   (2020-08-19 00:00) : <100
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 2,850
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 1,250
Market Leadtime (weeks) : 17 to 20
FutureElectronics   (2020-08-19 00:00) : <1K
Avnet   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : 17 to 20
PandS   (2020-09-14 00:00) : <100
FutureElectronics   (2020-08-19 00:00) : <1K

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
LM2576D2T-005G  
 $1.168 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
3
85
52
D2PAK-5
LM2576D2T-15G  
 $1.2466 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
15
3
85
52
D2PAK-5
LM2576D2T-ADJG  
 $1.2466 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
3
85
52
D2PAK-5
LM2576D2T-ADJR4G  
 $1.2466 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
3
85
52
D2PAK-5
LM2576D2TR4-012G  
 $1.9333 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
3
85
52
D2PAK-5
LM2576D2TR4-3.3G  
 $1.9333 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
3
85
52
D2PAK-5
LM2576D2TR4-5G  
 $1.2466 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
3
85
52
D2PAK-5
LM2576T-005G  
 $1.1784 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
3
85
52
TO-220-5
LM2576T-012G  
 $0.9777 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
3
85
52
TO-220-5
LM2576T-15G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
15
3
85
52
TO-220-5
LM2576T-3.3G  
 $1.8666 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
3
85
52
TO-220-5
LM2576T-ADJG  
 $1.21 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
3
85
52
TO-220-5
LM2576TV-012G  
 $0.9262 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
12
3
85
52
TO-220-5
LM2576TV-015G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
15
3
85
52
TO-220-5
LM2576TV-3.3G  
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
3.3
3
85
52
TO-220-5
LM2576TV-5G  
 $0.9262 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
5
3
85
52
TO-220-5
LM2576TV-ADJG  
 $1.21 
Pb
H
 Active   
Step-Down
Voltage Mode
7
40
1.23 to 37
3
85
52
TO-220-5
Case Outlines
314D-04    314B-05    936A-02   
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