Datasheet Linear Technology LTC3770
| Manufacturer | Linear Technology |
| Series | LTC3770 |
Fast No RSENSE Step-Down Synchronous Controller with Margining, Tracking and PLL
Datasheets
Datasheet LTC3770
PDF, 273 Kb, Language: en, File uploaded: Sep 23, 2017, Pages: 24
Fast No RSENSE Step-Down Synchronous Controller with Margining, Tracking and PLL
Fast No RSENSE Step-Down Synchronous Controller with Margining, Tracking and PLL
Extract from the document
Prices
Packaging
| LTC3770EG#PBF | LTC3770EG#TRPBF | LTC3770EUH#PBF | LTC3770EUH#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | 5x5 QFN-32 Package Outline Drawing | 5x5 QFN-32 Package Outline Drawing |
| Package Code | G | G | UH | UH |
| Package Index | 05-08-1640 (G28) | 05-08-1640 (G28) | 05-08-1693 | 05-08-1693 |
| Pin Count | 28 | 28 | 32 | 32 |
Parametrics
| Parameters / Models | LTC3770EG#PBF | LTC3770EG#TRPBF | LTC3770EUH#PBF | LTC3770EUH#TRPBF |
|---|---|---|---|---|
| Architecture | Constant On-Time Valley Current Mode | Constant On-Time Valley Current Mode | Constant On-Time Valley Current Mode | Constant On-Time Valley Current Mode |
| Demo Boards | DC774A | DC774A | DC774A | DC774A |
| Design Tools | LTspice File | LTspice File | LTspice File | LTspice File |
| Export Control | no | no | no | no |
| Features | No Rsense, Margining, Tracking, External Synchronization, PLL, Power Good | No Rsense, Margining, Tracking, External Synchronization, PLL, Power Good | No Rsense, Margining, Tracking, External Synchronization, PLL, Power Good | No Rsense, Margining, Tracking, External Synchronization, PLL, Power Good |
| Frequency Sync Range | Up to 1MHz | Up to 1MHz | Up to 1MHz | Up to 1MHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 30 | 30 | 30 | 30 |
| Isupply, mA | 1.3 | 1.3 | 1.3 | 1.3 |
| Max Phases | 1 | 1 | 1 | 1 |
| Monolithic | no | no | no | no |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 85 | 0 to 85 | 0 to 85 | 0 to 85 |
| Output Current, A | 15 | 15 | 15 | 15 |
| Polyphase | no | no | no | no |
| Sense Resistor | None | None | None | None |
| Switch Current, A | 15 | 15 | 15 | 15 |
| Synchronous | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck |
| Vin Max, V | 32 | 32 | 32 | 32 |
| Vin Min, V | 4 | 4 | 4 | 4 |
| Vout Max, V | 28.8 | 28.8 | 28.8 | 28.8 |
| Vout Maximum | 0.9Vin | 0.9Vin | 0.9Vin | 0.9Vin |
| Vout Min, V | 0.6 | 0.6 | 0.6 | 0.6 |
| Vref Accuracy Over Temp, % | 0.67 | 0.67 | 0.67 | 0.67 |
Eco Plan
| LTC3770EG#PBF | LTC3770EG#TRPBF | LTC3770EUH#PBF | LTC3770EUH#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Design Notes
- High Accuracy Synchronous Step-Down Controller Provides Output Tracking and Programmable Margining &mdash DN364PDF, 97 Kb, File published: Apr 11, 2005Extract from the document
Model Line
Series: LTC3770 (4)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers
