Datasheet Texas Instruments LM25018
| Manufacturer | Texas Instruments |
| Series | LM25018 |
7.5-48V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator
Datasheets
LM25018 48-V, 325-mA Constant On-Time Synchronous Buck Regulator datasheet
PDF, 1.8 Mb, Revision: E, File published: Nov 8, 2015
Extract from the document
Status
| LM25018MR/NOPB | LM25018MRE/NOPB | LM25018MRX/NOPB | LM25018SD/NOPB | LM25018SDE/NOPB | LM25018SDX/NOPB | |
|---|---|---|---|---|---|---|
| Lifecycle Status | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes | No | No | Yes | No | Yes |
Packaging
| LM25018MR/NOPB | LM25018MRE/NOPB | LM25018MRX/NOPB | LM25018SD/NOPB | LM25018SDE/NOPB | LM25018SDX/NOPB | |
|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 |
| Pin | 8 | 8 | 8 | 8 | 8 | 8 |
| Package Type | DDA | DDA | DDA | NGU | NGU | NGU |
| Industry STD Term | HSOIC | HSOIC | HSOIC | WSON | WSON | WSON |
| JEDEC Code | R-PDSO-G | R-PDSO-G | R-PDSO-G | S-PDSO-N | S-PDSO-N | S-PDSO-N |
| Package QTY | 95 | 250 | 2500 | 1000 | 250 | 4500 |
| Carrier | TUBE | SMALL T&R | LARGE T&R | LARGE T&R | SMALL T&R | LARGE T&R |
| Device Marking | MR | MR | MR | L25018 | L25018 | L25018 |
| Width (mm) | 3.9 | 3.9 | 3.9 | 4 | 4 | 4 |
| Length (mm) | 4.89 | 4.89 | 4.89 | 4 | 4 | 4 |
| Thickness (mm) | 1.48 | 1.48 | 1.48 | .8 | .8 | .8 |
| Pitch (mm) | 1.27 | 1.27 | 1.27 | .8 | .8 | .8 |
| Max Height (mm) | 1.7 | 1.7 | 1.7 | .8 | .8 | .8 |
| Mechanical Data | Download | Download | Download | Download | Download | Download |
Parametrics
| Parameters / Models | LM25018MR/NOPB | LM25018MRE/NOPB | LM25018MRX/NOPB | LM25018SD/NOPB | LM25018SDE/NOPB | LM25018SDX/NOPB |
|---|---|---|---|---|---|---|
| Control Mode | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) |
| Duty Cycle(Max), % | 90 | 90 | 90 | 90 | 90 | 90 |
| Iout(Max), A | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Iq(Typ), mA | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 |
| Operating Temperature Range, C | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package Group | SO PowerPAD | SO PowerPAD | SO PowerPAD | WSON | WSON | WSON |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| Regulated Outputs | 1 | 1 | 1 | 1 | 1 | 1 |
| Special Features | Synchronous Rectification,UVLO Adjustable | Synchronous Rectification,UVLO Adjustable | Synchronous Rectification,UVLO Adjustable | Synchronous Rectification,UVLO Adjustable | Synchronous Rectification,UVLO Adjustable | Synchronous Rectification,UVLO Adjustable |
| Switching Frequency(Max), kHz | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 |
| Switching Frequency(Min), kHz | 50 | 50 | 50 | 50 | 50 | 50 |
| Type | Converter | Converter | Converter | Converter | Converter | Converter |
| Vin(Max), V | 48 | 48 | 48 | 48 | 48 | 48 |
| Vin(Min), V | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 |
| Vout(Max), V | 40 | 40 | 40 | 40 | 40 | 40 |
| Vout(Min), V | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 |
Eco Plan
| LM25018MR/NOPB | LM25018MRE/NOPB | LM25018MRX/NOPB | LM25018SD/NOPB | LM25018SDE/NOPB | LM25018SDX/NOPB | |
|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Application Notes
- Fly-Buck(TM) converter provides EMC and isolation in PLC applicationsPDF, 201 Kb, File published: Jan 29, 2015
- AN-2292 Designing an Isolated Buck (Fly-Buck) Converter (Rev. C)PDF, 870 Kb, Revision: C, File published: Dec 17, 2014
In many applications, one or more low-cost, simple to use, isolated power supplies working from input voltages up to 100 V are needed. Traditional solutions use flyback converters to generate this bias supply. Flyback designs typically utilize asymmetric transformers turns ratios for primary and secondary power windings, with an optocoupler and reference, or an auxiliary winding for feedback regul
Model Line
Series: LM25018 (6)
Manufacturer's Classification
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Converter (Integrated Switch)