Datasheet Linear Technology LTC3770 — Ficha de datos
| Fabricante | Linear Technology |
| Serie | LTC3770 |
Controlador síncrono reductor rápido sin RSENSE con margen, seguimiento y PLL
Hojas de datos
Datasheet LTC3770
PDF, 273 Kb, Idioma: en, Archivo subido: sept 23, 2017, Páginas: 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
Extracto del documento
Precios
Embalaje
| LTC3770EG#PBF | LTC3770EG#TRPBF | LTC3770EUH#PBF | LTC3770EUH#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | SSOP-28 Dibujo del esquema del paquete | SSOP-28 Dibujo del esquema del paquete | 5x5 QFN-32 Dibujo del esquema del paquete | 5x5 QFN-32 Dibujo del esquema del paquete |
| 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 |
Paramétricos
| 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 |
Plan ecológico
| LTC3770EG#PBF | LTC3770EG#TRPBF | LTC3770EUH#PBF | LTC3770EUH#TRPBF | |
|---|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente | Obediente |
Notas de Diseño
- High Accuracy Synchronous Step-Down Controller Provides Output Tracking and Programmable Margining &mdash DN364PDF, 97 Kb, Archivo publicado: abr 11, 2005Extracto del documento
Linea modelo
Serie: LTC3770 (4)
Clasificación del fabricante
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers