Datasheet Linear Technology LT1959
| Manufacturer | Linear Technology |
| Series | LT1959 |
4.5A, 500kHz Step-Down Switching Regulator
Datasheets
Datasheet LT1959
PDF, 305 Kb, Language: en, File uploaded: Sep 3, 2017, Pages: 24
4.5A, 500kHz Step-Down Switching Regulator
4.5A, 500kHz Step-Down Switching Regulator
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Packaging
| LT1959CR#PBF | LT1959CR#TRPBF | LT1959CS8#PBF | LT1959CS8#TRPBF | LT1959IR#PBF | LT1959IR#TRPBF | LT1959IS8#PBF | LT1959IS8#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | DDPAK-7 Package Outline Drawing | DDPAK-7 Package Outline Drawing | SO-8 Package Outline Drawing | SO-8 Package Outline Drawing | DDPAK-7 Package Outline Drawing | DDPAK-7 Package Outline Drawing | SO-8 Package Outline Drawing | SO-8 Package Outline Drawing |
| Package Code | R | R | S8 | S8 | R | R | S8 | S8 |
| Package Index | 05-08-1462 | 05-08-1462 | 05-08-1610 (S8) | 05-08-1610 (S8) | 05-08-1462 | 05-08-1462 | 05-08-1610 (S8) | 05-08-1610 (S8) |
| Pin Count | 7 | 7 | 8 | 8 | 7 | 7 | 8 | 8 |
Parametrics
| Parameters / Models | LT1959CR#PBF | LT1959CR#TRPBF | LT1959CS8#PBF | LT1959CS8#TRPBF | LT1959IR#PBF | LT1959IR#TRPBF | LT1959IS8#PBF | LT1959IS8#TRPBF |
|---|---|---|---|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A | DC355A,DC356A |
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no | no | no | no | no |
| Features | External Synchronization | External Synchronization | External Synchronization | External Synchronization | External Synchronization | External Synchronization | External Synchronization | External Synchronization |
| Frequency, kHz | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Frequency Sync Range | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz | 580kHz - 1MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Isupply, mA | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 |
| Max Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Monolithic | yes | yes | yes | yes | yes | yes | yes | yes |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 |
| Polyphase | no | no | no | no | no | no | no | no |
| Switch Current, A | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Synchronous | no | no | no | no | no | no | no | no |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Vin Min, V | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Vout Max, V | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 |
| Vout Maximum | .86VIN | .86VIN | .86VIN | .86VIN | .86VIN | .86VIN | .86VIN | .86VIN |
| Vout Min, V | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 |
Eco Plan
| LT1959CR#PBF | LT1959CR#TRPBF | LT1959CS8#PBF | LT1959CS8#TRPBF | LT1959IR#PBF | LT1959IR#TRPBF | LT1959IS8#PBF | LT1959IS8#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT1959 (8)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck