Datasheet Texas Instruments LM3478MAX/NOPB
| Manufacturer | Texas Instruments |
| Series | LM3478 |
| Part Number | LM3478MAX/NOPB |
40V Wide Vin Low-Side N-Channel Controller for Switching Regulator 8-SOIC
Datasheets
LM3478 High-Efficiency Low-Side N-Channel Controller for Switching Regulator datasheet
PDF, 1.5 Mb, Revision: X, File published: Feb 28, 2017
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 8 | 8 |
| Package Type | D | D |
| Industry STD Term | SOIC | SOIC |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 2500 | 2500 |
| Carrier | LARGE T&R | LARGE T&R |
| Device Marking | MA | L3478 |
| Width (mm) | 3.91 | 3.91 |
| Length (mm) | 4.9 | 4.9 |
| Thickness (mm) | 1.58 | 1.58 |
| Pitch (mm) | 1.27 | 1.27 |
| Max Height (mm) | 1.75 | 1.75 |
| Mechanical Data | Download | Download |
Parametrics
| Duty Cycle(Max) | 100 % |
| Iout(Max) | 10 A |
| Iq(Typ) | 2.7 mA |
| Operating Temperature Range | -40 to 125 C |
| Package Group | SOIC |
| Rating | Catalog |
| Regulated Outputs | 1 |
| Special Features | Adjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Pre-Bias Start-Up |
| Switch Current Limit(Typ) | 10 A |
| Switching Frequency(Max) | 1000 kHz |
| Switching Frequency(Min) | 100 kHz |
| Type | Controller |
| Vin(Max) | 40 V |
| Vin(Min) | 2.97 V |
| Vout(Max) | 500 V |
| Vout(Min) | 1.26 V |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: LM3478EVAL
High Efficiency Low-Side N-Channel Controller for Switching Regulator
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- Softstart Using Constant Current Constant Voltage ApproachPDF, 337 Kb, File published: Jul 24, 2015
In many systems backup power is provided either by batteries or simply by a large value capacitor. Inthese applications the capacitor would only provide the current when the primary power source fails.Further, these applications are usually for light load currents. During normal operation the backupcapacitors are kept charged up by a DC/DC converter. The challenge involved in an application - Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC CoPDF, 782 Kb, File published: Jul 11, 2014
- AN-1286 Compensation For The LM3478 Boost Controller (Rev. C)PDF, 356 Kb, Revision: C, File published: Apr 23, 2013
The LM3478 is a low side N-Channel controller for switching regulators. Like many switching controllers,the added flexibility in component selection can cause problems for users when determining thecompensation scheme. It is the goal of this application report to present a decent groundwork to allow thereader to select with confidence the correct compensation components. To achieve this we l - AN-1484 Designing A SEPIC Converter (Rev. E)PDF, 220 Kb, Revision: E, File published: Apr 23, 2013
In a single ended primary inductance converter (SEPIC) design, the output voltage can be higher or lowerthan the input voltage. The SEPIC converter shown in Figure 1 uses two inductors: L1 and L2. The twoinductors can be wound on the same core since the same voltages are applied to them throughout theswitching cycle. - Modeling & Design of Current Mode Control Boost Converters (Rev. B)PDF, 316 Kb, Revision: B, File published: Apr 23, 2013
This application note presents a detail modeling and design of current mode control boost convertersoperating in the continuous conduction mode (CCM). Based on the derived small signal models, thedesign of a lag compensator for current mode control boost converters will be detailed. The LM3478 boostcontroller will be used in the example. Simulation and hardware measurement of frequency respo - AN-1990 Compensation for Current Mode Control SEPIC Converters (Rev. A)PDF, 247 Kb, Revision: A, File published: Apr 23, 2013
This application note discusses the use of SEPIC converters in various applications. - LM34xx How to Design Flyback Converter with LM3481 Boost ControllerPDF, 1.7 Mb, File published: Sep 21, 2016
The TexasInstrumentsLM3481boostcontrolleris a versatilelow-sideN-FEThigh-performancecontrollerfor switchingregulators.Thedevicehaswiderangeof applicationssuchas automotivestart-stopapplication,one-cellor two-cellLi-ionbattery-poweredportableBluetoothaudiosystem,industrialsystemisolatedsupplies,and so forth,and supportstopologi
Model Line
Series: LM3478 (5)
- LM3478MA/NOPB LM3478MAX/NOPB LM3478MM LM3478MM/NOPB LM3478MMX/NOPB
Manufacturer's Classification
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Up (Boost) > Boost Controller (External Switch)
