Datasheet Texas Instruments LM21305
| Manufacturer | Texas Instruments |
| Series | LM21305 |
3-18V, 5A, Current Mode Synchronous Buck Regulator with Adjustable Frequency
Datasheets
LM21305 3-V to 18-V, 5-A, Adjustable Frequency Synchronous Buck Converter datasheet
PDF, 1.9 Mb, Revision: G, File published: Sep 25, 2015
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Status
| LM21305SQ/NOPB | LM21305SQE/NOPB | LM21305SQX/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
| LM21305SQ/NOPB | LM21305SQE/NOPB | LM21305SQX/NOPB | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Pin | 28 | 28 | 28 |
| Package Type | RSG | RSG | RSG |
| Industry STD Term | WQFN | WQFN | WQFN |
| JEDEC Code | S-PQFP-N | S-PQFP-N | S-PQFP-N |
| Package QTY | 1000 | 250 | 4500 |
| Carrier | SMALL T&R | SMALL T&R | LARGE T&R |
| Device Marking | 21305SQ | 21305SQ | 21305SQ |
| Width (mm) | 5 | 5 | 5 |
| Length (mm) | 5 | 5 | 5 |
| Thickness (mm) | .75 | .75 | .75 |
| Pitch (mm) | .5 | .5 | .5 |
| Max Height (mm) | .8 | .8 | .8 |
| Mechanical Data | Download | Download | Download |
Parametrics
| Parameters / Models | LM21305SQ/NOPB | LM21305SQE/NOPB | LM21305SQX/NOPB |
|---|---|---|---|
| Control Mode | Current Mode | Current Mode | Current Mode |
| Duty Cycle(Max), % | 100 | 100 | 100 |
| Iout(Max), A | 5 | 5 | 5 |
| Iq(Typ), mA | 9 | 9 | 9 |
| Operating Temperature Range, C | -40 to 85 | -40 to 85 | -40 to 85 |
| Package Group | WQFN | WQFN | WQFN |
| Rating | Catalog | Catalog | Catalog |
| Regulated Outputs | 1 | 1 | 1 |
| Special Features | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification |
| Switching Frequency(Max), kHz | 1500 | 1500 | 1500 |
| Switching Frequency(Min), kHz | 300 | 300 | 300 |
| Type | Converter | Converter | Converter |
| Vin(Max), V | 18 | 18 | 18 |
| Vin(Min), V | 3 | 3 | 3 |
| Vout(Max), V | 0.6 | 0.6 | 0.6 |
| Vout(Min), V | 0.6 | 0.6 | 0.6 |
Eco Plan
| LM21305SQ/NOPB | LM21305SQE/NOPB | LM21305SQX/NOPB | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
Model Line
Series: LM21305 (3)
Manufacturer's Classification
- Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Converter (Integrated Switch)
