Datasheet Linear Technology LT3685 — Ficha de datos
| Fabricante | Linear Technology |
| Serie | LT3685 |
Regulador de conmutación descendente de 36V, 2A, 2.4MHz
Hojas de datos
Datasheet LT3685
PDF, 282 Kb, Idioma: en, Archivo subido: sept 19, 2017, Páginas: 24
36V, 2A, 2.4MHz Step-Down Switching Regulator
36V, 2A, 2.4MHz Step-Down Switching Regulator
Extracto del documento
Precios
Embalaje
| LT3685EDD#PBF | LT3685EDD#TRPBF | LT3685EMSE#PBF | LT3685EMSE#TRPBF | LT3685IDD#PBF | LT3685IDD#TRPBF | LT3685IMSE#PBF | LT3685IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | 3x3 DFN-10 Dibujo del esquema del paquete | 3x3 DFN-10 Dibujo del esquema del paquete | MS-10E Dibujo del esquema del paquete | MS-10E Dibujo del esquema del paquete | 3x3 DFN-10 Dibujo del esquema del paquete | 3x3 DFN-10 Dibujo del esquema del paquete | MS-10E Dibujo del esquema del paquete | MS-10E Dibujo del esquema del paquete |
| Package Code | DD | DD | MSE | MSE | DD | DD | MSE | MSE |
| Package Index | 05-08-1699 | 05-08-1699 | 05-08-1664 | 05-08-1664 | 05-08-1699 | 05-08-1699 | 05-08-1664 | 05-08-1664 |
| Pin Count | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Paramétricos
| Parameters / Models | LT3685EDD#PBF | LT3685EDD#TRPBF | LT3685EMSE#PBF | LT3685EMSE#TRPBF | LT3685IDD#PBF | LT3685IDD#TRPBF | LT3685IMSE#PBF | LT3685IMSE#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 | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B | DC1167A,DC1212A-B |
| Design Tools | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model |
| Export Control | no | no | no | no | no | no | no | no |
| Features | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good | Resistor Set Frequency, External Synchronization, Power Good |
| Frequency, kHz | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 |
| Frequency Adjust Range | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz | 200kHz - 2.4MHz |
| Frequency Sync Range | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 |
| Isupply, mA | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 | 0.45 |
| 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 85 | 0 to 85 | 0 to 85 | 0 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Over Voltage Protection, V | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Polyphase | no | no | no | no | no | no | no | no |
| Switch Current, A | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 |
| Synchronous | no | no | no | no | no | no | no | no |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Vin Min, V | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 |
| Vout Max, V | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Vout Maximum | 20V | 20V | 20V | 20V | 20V | 20V | 20V | 20V |
| Vout Min, V | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 |
| Vref Accuracy Over Temp, % | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 |
Plan ecológico
| LT3685EDD#PBF | LT3685EDD#TRPBF | LT3685EMSE#PBF | LT3685EMSE#TRPBF | LT3685IDD#PBF | LT3685IDD#TRPBF | LT3685IMSE#PBF | LT3685IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Obediente | Obediente | Obediente | Obediente | Obediente | Obediente | Obediente | Obediente |
Notas de aplicación
- 2-Wire Virtual Remote Sensing for Voltage Regulators - Clairvoyance Marries Remote Sensing &mdash AN126PDF, 1.4 Mb, Archivo publicado: oct 1, 2010
Wires and connectors have resistance. This simple, unavoidable truth dictates that a power source’s remote load voltage will be less than the source’s output voltage. Traditional methods for countering this include increasing the power source voltage and "4-wire" remote voltage sensing. Both have limitations. A new IC based approach achieves "virtual" remote sensing at the load without adding the usual two extra sense wires. Numerous circuit examples show the IC working with various voltage regulators and remote loads. Appendices detail IC internal operation and design guidelines for applying the part in any regulator circuit.Extracto del documento
Linea modelo
Serie: LT3685 (8)
Clasificación del fabricante
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck