Datasheet Texas Instruments LM5121
| Manufacturer | Texas Instruments |
| Series | LM5121 |
3-65V Wide Vin, Current Mode Synchronous Boost with Disconnection Switch Control
Datasheets
LM5121/-Q1 Wide Input Synchronous Boost Controller with Disconnection Switch Control datasheet
PDF, 3.0 Mb, Revision: C, File published: Jun 14, 2016
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Prices
Status
| LM5121MH/NOPB | LM5121MHE/NOPB | LM5121MHX/NOPB | |
|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No | No |
Packaging
| LM5121MH/NOPB | LM5121MHE/NOPB | LM5121MHX/NOPB | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Pin | 20 | 20 | 20 |
| Package Type | PWP | PWP | PWP |
| Industry STD Term | HTSSOP | HTSSOP | HTSSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G | R-PDSO-G |
| Package QTY | 73 | 250 | 2500 |
| Carrier | TUBE | SMALL T&R | LARGE T&R |
| Device Marking | LM5121 | LM5121 | MH |
| Width (mm) | 4.4 | 4.4 | 4.4 |
| Length (mm) | 6.5 | 6.5 | 6.5 |
| Thickness (mm) | 1 | 1 | 1 |
| Pitch (mm) | .65 | .65 | .65 |
| Max Height (mm) | 1.2 | 1.2 | 1.2 |
| Mechanical Data | Download | Download | Download |
Parametrics
| Parameters / Models | LM5121MH/NOPB | LM5121MHE/NOPB | LM5121MHX/NOPB |
|---|---|---|---|
| Duty Cycle(Max), % | 100 | 100 | 100 |
| Iout(Max), A | 20 | 20 | 20 |
| Iq(Typ), mA | 4 | 4 | 4 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 |
| Package Group | HTSSOP | HTSSOP | HTSSOP |
| Rating | Catalog | Catalog | Catalog |
| Regulated Outputs | 1 | 1 | 1 |
| Special Features | Adjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO Adjustable | Adjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO Adjustable | Adjustable Current Limit,Enable,Frequency Synchronization,Light Load Efficiency,Synchronous Rectification,UVLO Adjustable |
| Switch Current Limit(Typ), A | 20 | 20 | 20 |
| Switching Frequency(Max), kHz | 1000 | 1000 | 1000 |
| Switching Frequency(Min), kHz | 50 | 50 | 50 |
| Type | Controller | Controller | Controller |
| Vin(Max), V | 65 | 65 | 65 |
| Vin(Min), V | 3 | 3 | 3 |
| Vout(Max), V | 100 | 100 | 100 |
| Vout(Min), V | 3 | 3 | 3 |
Eco Plan
| LM5121MH/NOPB | LM5121MHE/NOPB | LM5121MHX/NOPB | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
Application Notes
- Automated Frequency Response AnalyzerPDF, 939 Kb, File published: Oct 9, 2013
This application report discusses a new method of doing stability Analysis testing by using basic labequipment, while not requiring any specific instruments. - Designing the front-end DC/DC conversion stage to withstand automotive transientPDF, 336 Kb, File published: Jan 18, 2017
- Practical Feedback Loop Analysis for Current-Mode Boost ConverterPDF, 557 Kb, File published: Mar 7, 2014
- Designing Fault Protection Circuits Using Wide VIN LM5121PDF, 186 Kb, File published: Jan 12, 2015
Battery powered systems or systems with low input voltage supplies may have loads that require higher voltage outputs. A boost converter is a usual choice for non-isolated applications; however, boost converters do not naturally provide system protection to downstream circuitry due to the pass path from input to output. Problems due to this pass path are now resolved with the LM5121 boost controll
Model Line
Series: LM5121 (3)
Manufacturer's Classification
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Up (Boost)> Boost Controller (External Switch)
