Datasheet Texas Instruments LM2577T-12/LB03 — Datenblatt
| Hersteller | Texas Instruments |
| Serie | LM2577 |
| Artikelnummer | LM2577T-12/LB03 |
SIMPLE SWITCHER® 3,5 V bis 40 V, 3A Step-Up-Regler mit niedriger Komponentenzahl 5-TO-220
Datenblätter
LM1577/LM2577 SIMPLE SWITCHER Step-Up Voltage Regulator datasheet
PDF, 4.0 Mb, Revision: D, Datei veröffentlicht: Apr 3, 2013
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Preise
Status
| Lifecycle Status | NRND (Not recommended for new designs) |
| Manufacture's Sample Availability | No |
Verpackung
| Pin | 5 | 5 |
| Package Type | NDH | NDH |
| Industry STD Term | TO-220 | TO-220 |
| JEDEC Code | R-MSFM-L | R-MSFM-L |
| Device Marking | P+ | LM2577T-12 |
| Width (mm) | 10.16 | 10.16 |
| Length (mm) | 14.986 | 14.986 |
| Thickness (mm) | 4.572 | 4.572 |
| Pitch (mm) | 1.702 | 1.702 |
| Max Height (mm) | 4.7 | 4.7 |
| Mechanical Data | Herunterladen | Herunterladen |
Ersatz
| Replacement | LM2577T-ADJ/NOPB |
| Replacement Code | Q |
Parameter
| Approx. Price (US$) | 2.65 | 1ku |
| Duty Cycle(Max)(%) | 95 |
| Iq(Typ)(mA) | 10 |
| Operating Temperature Range(C) | -40 to 125 |
| Package Group | TO-220 |
| Rating | Catalog |
| Regulated Outputs(#) | 1 |
| Switch Current Limit(Typ)(A) | 3 |
| Switching Frequency(Max)(kHz) | 52 |
| Switching Frequency(Min)(kHz) | 52 |
| Type | Converter |
| Vin(Max)(V) | 40 |
| Vin(Min)(V) | 3.5 |
| Vout(Max)(V) | 15 |
| Vout(Min)(V) | 1.23 |
Öko-Plan
| RoHS | Not Compliant |
| Pb Free | No |
Anwendungshinweise
- AN-777 LM2577 Three Output, Isolated Flyback Regulator (Rev. B)PDF, 278 Kb, Revision: B, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: Apr 23, 2013
This application note provides information about the 20-watt simple switcher forward converter. - Working With Boost ConvertersPDF, 159 Kb, Datei veröffentlicht: 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, Datei veröffentlicht: Sep 19, 2005
- Basic Calculation of a Boost Converter's Power Stage (Rev. C)PDF, 186 Kb, Revision: C, Datei veröffentlicht: 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, Datei veröffentlicht: Mar 21, 2007
- AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)PDF, 3.6 Mb, Revision: A, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: Apr 19, 2016
- AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)PDF, 82 Kb, Revision: C, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: 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, Datei veröffentlicht: Sep 23, 2016
Theswitchingregulatoris increasingin popularitybecauseit offersthe advantagesof higherpowerconversionefficiencyand increaseddesignflexibility(multipleoutputvoltagesof differentpolaritiescan begeneratedfroma singleinputvoltage).
Modellreihe
Serie: LM2577 (14)
Herstellerklassifikation
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Up (Boost) > Boost Converter (Integrated Switch)
Andere Namen:
LM2577T12/LB03, LM2577T 12/LB03