Datasheet Texas Instruments LMR70503TM/NOPB
| Manufacturer | Texas Instruments |
| Series | LMR70503 |
| Part Number | LMR70503TM/NOPB |
2.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator 8-DSBGA -40 to 125
Datasheets
LMR70503 Buck-Boost Converter For Negative Output Voltage in DSBGA datasheet
PDF, 1.6 Mb, Revision: A, File published: Apr 4, 2013
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Packaging
| Pin | 8 |
| Package Type | YFX |
| Industry STD Term | DSBGA |
| JEDEC Code | R-XBGA-N |
| Package QTY | 250 |
| Carrier | SMALL T&R |
| Device Marking | S3 |
| Thickness (mm) | .42 |
| Pitch (mm) | .4 |
| Max Height (mm) | .675 |
| Mechanical Data | Download |
Parametrics
| Duty Cycle(Max) | 90 % |
| Iq(Typ) | 0.3 mA |
| Operating Temperature Range | -40 to 125 C |
| Package Group | DSBGA |
| Rating | Catalog |
| Special Features | Enable |
| Switch Current Limit(Min) | 0.25 A |
| Switch Current Limit(Typ) | 0.32 A |
| Switching Frequency(Max) | 1000 kHz |
| Switching Frequency(Min) | 500 kHz |
| Topology | Inverting |
| Type | Converter |
| Vin(Max) | 5.5 V |
| Vin(Min) | 2.8 V |
| Vout(Max) | -0.9 V |
| Vout(Min) | -5.5 V |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: LMR70503EVM
LMR70503 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- 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 - Input and Output Capacitor SelectionPDF, 219 Kb, File published: Sep 19, 2005
- 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
- Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A)PDF, 363 Kb, Revision: A, File published: May 28, 2002
- 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 - 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
Model Line
Series: LMR70503 (2)
- LMR70503TM/NOPB LMR70503TMX/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Buck/Boost, Inverting or Split-Rail > Buck/Boost, Inverting or Split-Rail Converter (Integrated Switch)
