Datasheet Texas Instruments LM2574M-12 — Datenblatt
| Hersteller | Texas Instruments |
| Serie | LM2574 |
| Artikelnummer | LM2574M-12 |
EINFACHER SCHALTER 4V bis 40V, 0,5A Step-Down DC / DC-Schaltregler 14-SOIC -40 bis 125
Datenblätter
LM2574x SIMPLE SWITCHERВ® 0.5-A Step-Down Voltage Regulator datasheet
PDF, 3.2 Mb, Revision: D, Datei veröffentlicht: Apr 27, 2016
Auszug aus dem Dokument
Preise
Status
| Lifecycle Status | NRND (Not recommended for new designs) |
| Manufacture's Sample Availability | No |
Verpackung
| Pin | 14 | 14 |
| Package Type | NPA | NPA |
| Industry STD Term | SOIC | SOIC |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 50 | 50 |
| Carrier | TUBE | TUBE |
| Device Marking | LM2574M | -12 P+ |
| Width (mm) | 7.498 | 7.498 |
| Length (mm) | 8.992 | 8.992 |
| Thickness (mm) | 2.301 | 2.301 |
| Pitch (mm) | 1.27 | 1.27 |
| Max Height (mm) | 2.65 | 2.65 |
| Mechanical Data | Herunterladen | Herunterladen |
Ersatz
| Replacement | LM2574M-12/NOPB |
| Replacement Code | S |
Parameter
| Approx. Price (US$) | 1.04 | 1ku |
| Control Mode | Voltage Mode |
| Duty Cycle(Max)(%) | 98 |
| Iout(Max)(A) | 0.5 |
| Iq(Typ)(mA) | 5 |
| Operating Temperature Range(C) | -40 to 125 |
| Package Group | SOIC |
| Rating | Catalog |
| Regulated Outputs(#) | 1 |
| Special Features | Enable |
| Switching Frequency(Max)(kHz) | 52 |
| Switching Frequency(Min)(kHz) | 52 |
| Type | Converter |
| Vin(Max)(V) | 40 |
| Vin(Min)(V) | 4 |
| Vout(Max)(V) | 37 |
| Vout(Min)(V) | 3.3 |
Öko-Plan
| RoHS | TBD |
| Pb Free | No |
Anwendungshinweise
- 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 - Input and Output Capacitor SelectionPDF, 219 Kb, Datei veröffentlicht: Sep 19, 2005
- AN-1197 Selecting Inductors for Buck Converters (Rev. B)PDF, 558 Kb, Revision: B, Datei veröffentlicht: Apr 23, 2013
This application report provides design information to help select an off-the-shelf inductor for anycontinuous-mode buck converter application. - 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
- Buck Converters Provide a Battery Charger and System PowerPDF, 61 Kb, Datei veröffentlicht: Mar 21, 2007
- Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)PDF, 512 Kb, Revision: A, Datei veröffentlicht: Sep 12, 2014
Printed Circuit Board (PCB) layout for Switched Mode Power Supplies (SMPS) is critical to achieve proper converter operation good thermal performance and excellent radiated EMI performance. Optimized board layout for low radiated EMI is made very simple by the package and pin arrangement of the SIMPLE SWITCHER Synchronous Buck Converter family LM4360x and LM4600x - 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 - 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-1246 Stresses in Wide Input DC-DC Converters (Rev. C)PDF, 427 Kb, Revision: C, Datei veröffentlicht: Apr 23, 2013
This application note discusses stresses in wide input DC-DC converters. - 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: LM2574 (17)
Herstellerklassifikation
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Converter (Integrated Switch)
Andere Namen:
LM2574M12, LM2574M 12