Datasheet Linear Technology LT1681
| Manufacturer | Linear Technology |
| Series | LT1681 |
Dual Transistor Synchronous Forward Controller
Datasheets
Datasheet LT1681
PDF, 281 Kb, Language: en, File uploaded: Sep 3, 2017, Pages: 20
Dual Transistor Synchronous Forward Controller
Dual Transistor Synchronous Forward Controller
Extract from the document
Prices
Packaging
| LT1681ESW#PBF | LT1681ESW#TRPBF | LT1681ISW#PBF | LT1681ISW#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | SW-20 Package Outline Drawing | SW-20 Package Outline Drawing | SW-20 Package Outline Drawing | SW-20 Package Outline Drawing |
| Package Code | SW | SW | SW | SW |
| Package Index | 05-08-1620 (SW20) | 05-08-1620 (SW20) | 05-08-1620 (SW20) | 05-08-1620 (SW20) |
| Pin Count | 20 | 20 | 20 | 20 |
Parametrics
| Parameters / Models | LT1681ESW#PBF | LT1681ESW#TRPBF | LT1681ISW#PBF | LT1681ISW#TRPBF |
|---|---|---|---|---|
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no |
| Features | External Synchronization | External Synchronization | External Synchronization | External Synchronization |
| Frequency, kHz | 350 | 350 | 350 | 350 |
| Frequency Sync Range | Up to 350kHz | Up to 350kHz | Up to 350kHz | Up to 350kHz |
| Integrated Inductor | no | no | no | no |
| Isupply, mA | 17 | 17 | 17 | 17 |
| Monolithic | no | no | no | no |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 85 | 0 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 20 | 20 | 20 | 20 |
| Polyphase | no | no | no | no |
| Switch Current, A | 20 | 20 | 20 | 20 |
| Synchronous | yes | yes | yes | yes |
| Topology | Forward | Forward | Forward | Forward |
| Vin Max, V | 72 | 72 | 72 | 72 |
| Vin Min, V | 9 | 9 | 9 | 9 |
| Vout Max, V | 64.8 | 64.8 | 64.8 | 64.8 |
| Vout Maximum | 0.9VIN | 0.9VIN | 0.9VIN | 0.9VIN |
| Vout Min, V | 1.25 | 1.25 | 1.25 | 1.25 |
Eco Plan
| LT1681ESW#PBF | LT1681ESW#TRPBF | LT1681ISW#PBF | LT1681ISW#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Design Notes
- Chip Set Offers Low Cost Alternative to 48V Telecom Modules &mdash DN261PDF, 105 Kb, File published: Jul 1, 2001Extract from the document
Model Line
Series: LT1681 (4)
Manufacturer's Classification
- Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers
