Datasheet Texas Instruments LM2577
| Manufacturer | Texas Instruments |
| Series | LM2577 |
SIMPLE SWITCHERВ® 3.5V to 40V, 3A Low Component Count Step-Up Regulator
Datasheets
LM1577/LM2577 SIMPLE SWITCHER Step-Up Voltage Regulator datasheet
PDF, 4.0 Mb, Revision: D, File published: Apr 3, 2013
Extract from the document
LM1577/LM2577 SIMPLE SWITCHER Step-Up Voltage Regulator (Rev. D)
PDF, 4.7 Mb, Revision: D, File published: Apr 3, 2013
Prices
Status
| LM2577M-ADJ/NOPB | LM2577S-12/NOPB | LM2577S-ADJ | LM2577S-ADJ/NOPB | LM2577SX-ADJ | LM2577SX-ADJ/NOPB | LM2577T-12/LB03 | LM2577T-12/LF03 | LM2577T-15/NOPB | LM2577T-ADJ | LM2577T-ADJ/LB02 | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF03 | LM2577T-ADJ/NOPB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lifecycle Status | Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect) | Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect) | NRND (Not recommended for new designs) | Active (Recommended for new designs) | NRND (Not recommended for new designs) | Active (Recommended for new designs) | NRND (Not recommended for new designs) | Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect) | Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect) | NRND (Not recommended for new designs) | NRND (Not recommended for new designs) | NRND (Not recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No | No | No | No | No | Yes | No | No | No | No | Yes | No | No | No |
Packaging
| LM2577M-ADJ/NOPB | LM2577S-12/NOPB | LM2577S-ADJ | LM2577S-ADJ/NOPB | LM2577SX-ADJ | LM2577SX-ADJ/NOPB | LM2577T-12/LB03 | LM2577T-12/LF03 | LM2577T-15/NOPB | LM2577T-ADJ | LM2577T-ADJ/LB02 | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF03 | LM2577T-ADJ/NOPB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Pin | 24 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Package Type | DW | KTT | KTT | KTT | KTT | KTT | NDH | NDH | KC | KC | NEB | NDH | NDH | KC |
| Industry STD Term | SOIC | TO-263 | TO-263 | TO-263 | TO-263 | TO-263 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | |
| JEDEC Code | R-PDSO-G | R-PSFM-G | R-PSFM-G | R-PSFM-G | R-PSFM-G | R-PSFM-G | R-MSFM-L | R-MSFM-L | R-PSFM-T | R-PSFM-T | R-MSFM-L | R-MSFM-L | R-PSFM-T | |
| Package QTY | 30 | 45 | 45 | 45 | 500 | 500 | 45 | 45 | 45 | 45 | 45 | 45 | ||
| Carrier | TUBE | TUBE | TUBE | TUBE | LARGE T&R | LARGE T&R | TUBE | TUBE | TUBE | TUBE | TUBE | TUBE | ||
| Device Marking | LM2577M | -12 P+ | -ADJ P+ | -ADJ P+ | -ADJ P+ | -ADJ P+ | P+ | LM2577T-12 | P+ | LM2577T | P+ | -ADJ | LM2577T | P+ |
| Width (mm) | 7.5 | 8.42 | 8.42 | 8.42 | 8.42 | 8.42 | 10.16 | 10.16 | 8.51 | 8.51 | 10.16 | 10.16 | 8.51 | |
| Length (mm) | 15.4 | 10.16 | 10.16 | 10.16 | 10.16 | 10.16 | 14.986 | 14.986 | 10.16 | 10.16 | 14.986 | 14.986 | 10.16 | |
| Thickness (mm) | 2.35 | 4.58 | 4.58 | 4.58 | 4.58 | 4.58 | 4.572 | 4.572 | 4.58 | 4.58 | 4.572 | 4.572 | 4.58 | |
| Pitch (mm) | 1.27 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.702 | 1.702 | 1.7 | 1.7 | 1.702 | 1.702 | 1.7 | |
| Max Height (mm) | 2.65 | 4.83 | 4.83 | 4.83 | 4.83 | 4.83 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | |
| Mechanical Data | Download | Download | Download | Download | Download | Download | Download | Download | Download | Download | Download | Download | Download |
Parametrics
| Parameters / Models | LM2577M-ADJ/NOPB | LM2577S-12/NOPB | LM2577S-ADJ | LM2577S-ADJ/NOPB | LM2577SX-ADJ | LM2577SX-ADJ/NOPB | LM2577T-12/LB03 | LM2577T-12/LF03 | LM2577T-15/NOPB | LM2577T-ADJ | LM2577T-ADJ/LB02 | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF03 | LM2577T-ADJ/NOPB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Approx. Price (US$) | 2.65 | 1ku | 2.65 | 1ku | 2.65 | 1ku | 2.65 | 1ku | 2.65 | 1ku | 2.65 | 1ku | ||||||||
| Duty Cycle(Max), % | 95 | 95 | 95 | 95 | 95 | 95 | 95 | 95 | ||||||
| Duty Cycle(Max)(%) | 95 | 95 | 95 | 95 | 95 | 95 | ||||||||
| Iq(Typ), mA | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | ||||||
| Iq(Typ)(mA) | 10 | 10 | 10 | 10 | 10 | 10 | ||||||||
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | ||||||
| Operating Temperature Range(C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | ||||||||
| Package Group | DDPAK/TO-263 TO-220 | DDPAK/TO-263 | DDPAK/TO-263 | DDPAK/TO-263 | DDPAK/TO-263 | DDPAK/TO-263 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| Regulated Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
| Regulated Outputs(#) | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||
| Switch Current Limit(Typ), A | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||||||
| Switch Current Limit(Typ)(A) | 3 | 3 | 3 | 3 | 3 | 3 | ||||||||
| Switching Frequency(Max), kHz | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | ||||||
| Switching Frequency(Max)(kHz) | 52 | 52 | 52 | 52 | 52 | 52 | ||||||||
| Switching Frequency(Min), kHz | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | ||||||
| Switching Frequency(Min)(kHz) | 52 | 52 | ||||||||||||
| Type | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter | Converter |
| Vin(Max), V | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | ||||||
| Vin(Max)(V) | 40 | 40 | 40 | 40 | 40 | 40 | ||||||||
| Vin(Min), V | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | ||||||
| Vin(Min)(V) | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | ||||||||
| Vout(Max), V | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | ||||||
| Vout(Max)(V) | 15 | 15 | 15 | 15 | 15 | 15 | ||||||||
| Vout(Min), V | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 | ||||||
| Vout(Min)(V) | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 | 1.23 |
Eco Plan
| LM2577M-ADJ/NOPB | LM2577S-12/NOPB | LM2577S-ADJ | LM2577S-ADJ/NOPB | LM2577SX-ADJ | LM2577SX-ADJ/NOPB | LM2577T-12/LB03 | LM2577T-12/LF03 | LM2577T-15/NOPB | LM2577T-ADJ | LM2577T-ADJ/LB02 | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF03 | LM2577T-ADJ/NOPB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Not Compliant | See ti.com | Compliant | See ti.com | Compliant | Not Compliant | Compliant | Compliant | See ti.com | Not Compliant | See ti.com | Compliant | Compliant |
| Pb Free | Yes | No | Yes | Yes | Yes | Yes | Yes | No | No |
Application Notes
- AN-777 LM2577 Three Output, Isolated Flyback Regulator (Rev. B)PDF, 278 Kb, Revision: B, File published: Apr 23, 2013
Many voltage regulator applications require multiple outputs, such as a computer's power supply or aregulator used to meet the voltage requirements inside an automobile. Some of these applications requireisolation between the regulator's input and output for protection and separate ground specifications. Usingthese criteria, a LM2577 simple switcher flyback regulator has been designed with m - AN-643 EMI/RFI Board Design (Rev. B)PDF, 742 Kb, Revision: B, File published: May 3, 2004
Application Note 643 EMI/RFI Board Design - AN-776 20-W SIMPLE SWITCHER Forward Converter (Rev. A)PDF, 593 Kb, Revision: A, File published: Apr 23, 2013
This application note provides information about the 20-watt simple switcher forward converter. - Working With Boost ConvertersPDF, 159 Kb, File published: Jun 15, 2015
This brief note highlights some of the more common pitfalls when using boost regulators. These includemaximum achievable output current and voltage, short circuit behavior and basic layout issues. It isassumed that the reader is familiar with the basic operation of a boost regulator. - Input and Output Capacitor SelectionPDF, 219 Kb, File published: Sep 19, 2005
- Basic Calculation of a Boost Converter's Power Stage (Rev. C)PDF, 186 Kb, Revision: C, File published: Jan 8, 2014
This application note gives the equations to calculate the power stage of a boost converter built with an IC with integrated switch and operating in continuous conduction mode. It is not intended to give details on the functionality of a boost converter (see Reference 1) or how to compensate a converter. See the references at the end of this document if more detail is needed. - Negative Buck Switching Regulator (using LM258x)PDF, 122 Kb, File published: Mar 21, 2007
- AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)PDF, 3.6 Mb, Revision: A, File published: Apr 23, 2013
This application note will explore how the layout of your DC/DC power supply can significantly affect theamount of EMI that it produces. It will discuss several variations of a layout analyze the results andprovide answers to some common EMI questions such whether or not to use a shielded inductor. - AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)PDF, 1.4 Mb, Revision: A, File published: Apr 23, 2013
This application note provides thermal power analysis techniques for analyzing the power IC. - AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)PDF, 2.7 Mb, Revision: A, File published: Apr 23, 2013
This application report shows how to measure the critical points of a bode plot with only an audiogenerator (or simple signal generator) and an oscilloscope. The method is explained in an easy to followstep-by-step manner so that a power supply designer can start performing these measurements in a shortamount of time. - Semiconductor and IC Package Thermal Metrics (Rev. C)PDF, 201 Kb, Revision: C, File published: Apr 19, 2016
- AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)PDF, 82 Kb, Revision: C, File published: Apr 23, 2013
When designing a high frequency switching regulated power supply layout is very important. Using agood layout can solve many problems associated with these types of supplies. The problems due to a badlayout are often seen at high current levels and are usually more obvious at large input to output voltagedifferentials. Some of the main problems are loss of regulation at high output current - Understanding Boost Power Stages In Switchmode Power SuppliesPDF, 149 Kb, File published: Mar 4, 1999
A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the boost power stage only and does not cover control circuits. The report includes detailed steady-stage and small-signal analysis of the boost power stage o - AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)PDF, 374 Kb, Revision: C, File published: Apr 23, 2013
This application report provides SIMPLE SWITCHER™ PCB layout guidelines. - AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)PDF, 2.5 Mb, Revision: C, File published: Apr 24, 2013
Electromagnetic Interference (EMI) is an unwanted effect between two electrical systems as a result ofeither electromagnetic radiation or electromagnetic conduction. EMI is the major adverse effect caused bythe application of switch-mode power supplies (SMPS). In switching power supplies EMI noise isunavoidable due to the switching actions of the semiconductor devices and resulting disconti - AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)PDF, 9.2 Mb, Revision: B, File published: Apr 23, 2013
This thermal application report provides guidelines for the optimal board layout to achieve the best thermalresistance for exposed packages. The thermal resistance between junction-to-ambient (ОёJA) is highlydependent on the PCB (Printed Circuit Board) design factors. This becomes more critical for packageshaving very low thermal resistance between junction-to-case such as exposed pad TSSOP - Switching Regulator Fundamentals (Rev. A)PDF, 324 Kb, Revision: A, File published: Sep 23, 2016
Theswitchingregulatoris increasingin popularitybecauseit offersthe advantagesof higherpowerconversionefficiencyand increaseddesignflexibility(multipleoutputvoltagesof differentpolaritiescan begeneratedfroma singleinputvoltage). - AN-777 LM2577 Three Output, Isolated Flyback Regulator (Rev. B)PDF, 278 Kb, Revision: B, File published: Apr 23, 2013
Many voltage regulator applications require multiple outputs, such as a computer's power supply or a regulator used to meet the voltage requirements inside an automobile. Some of these applications r - AN-643 EMI/RFI Board Design (Rev. B)PDF, 742 Kb, Revision: B, File published: May 3, 2004
Application Note 643 EMI/RFI Board Design - AN-776 20-W SIMPLE SWITCHER Forward Converter (Rev. A)PDF, 593 Kb, Revision: A, File published: Apr 23, 2013
This application note provides information about the 20-watt simple switcher forward converter. - Working With Boost ConvertersPDF, 159 Kb, File published: Jun 15, 2015
This brief note highlights some of the more common pitfalls when using boost regulators. These include maximum achievable output current and voltage, short circuit behavior and basic layout issues. I - Input and Output Capacitor SelectionPDF, 219 Kb, File published: Sep 19, 2005
- Basic Calculation of a Boost Converter's Power Stage (Rev. C)PDF, 186 Kb, Revision: C, File published: Jan 8, 2014
This application note gives the equations to calculate the power stage of a boost converter built with an IC with integrated switch and operating in continuous conduction mode. It is not intended to g - Negative Buck Switching Regulator (using LM258x)PDF, 122 Kb, File published: Mar 21, 2007
- AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)PDF, 3.6 Mb, Revision: A, File published: Apr 23, 2013
This application note will explore how the layout of your DC/DC power supply can significantly affect the amount of EMI that it produces. It will discuss several variations of a layout, analyze the r - AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)PDF, 1.4 Mb, Revision: A, File published: Apr 23, 2013
This application note provides thermal power analysis techniques for analyzing the power IC. - Semiconductor and IC Package Thermal Metrics (Rev. B)PDF, 180 Kb, Revision: B, File published: Jul 5, 2012
Many thermal metrics exist for integrated circuit (IC) packages ranging from ?<sub>ja</sub> to ?<sub>jt</sub>. Often, these thermal metrics are misapplied by those who try to use them to estimate junc - Linear and Switching Voltage Regulator Fundamental Part 2PDF, 181 Kb, File published: Mar 21, 2007
- AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)PDF, 82 Kb, Revision: C, File published: Apr 23, 2013
When designing a high frequency switching regulated power supply, layout is very important. Using a good layout can solve many problems associated with these types of supplies. The problems due to a - Understanding Boost Power Stages In Switchmode Power SuppliesPDF, 149 Kb, File published: Mar 4, 1999
A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and - AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)PDF, 373 Kb, Revision: C, File published: Apr 23, 2013
This application report provides SIMPLE SWITCHER™ PCB layout guidelines.
Model Line
Series: LM2577 (14)
Manufacturer's Classification
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Up (Boost)> Boost Converter (Integrated Switch)
