Datasheet Linear Technology LTC3871
| Manufacturer | Linear Technology |
| Series | LTC3871 |
Bidirectional PolyPhase Synchronous Buck or Boost Controller
Datasheets
LTC3871: Bidirectional PolyPhase® Synchronous Buck or Boost Controller Data Sheet
PDF, 1.4 Mb, File uploaded: Sep 24, 2017
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Prices
Packaging
| LTC3871ELXE#PBF | LTC3871HLXE#PBF | LTC3871ILXE#PBF | |
|---|---|---|---|
| N | 1 | 2 | 3 |
| Package | 7mm x 7mm LQFP-48 Package Outline Drawing | 7mm x 7mm LQFP-48 Package Outline Drawing | 7mm x 7mm LQFP-48 Package Outline Drawing |
| Package Code | LXE | LXE | LXE |
| Package Index | 05-08-1832 | 05-08-1832 | 05-08-1832 |
| Pin Count | 48 | 48 | 48 |
Parametrics
| Parameters / Models | LTC3871ELXE#PBF | LTC3871HLXE#PBF | LTC3871ILXE#PBF |
|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC2348A-A,DC2348A-B | DC2348A-A,DC2348A-B | DC2348A-A,DC2348A-B |
| Design Tools | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File |
| Export Control | no | no | no |
| Features | Bidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhase | Bidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhase | Bidirectional, Output Current Monitor, External Synchronization, Resistor Set Frequency, PolyPhase |
| Frequency, kHz | 500 | 500 | 500 |
| Frequency Adjust Range | 50kHz to 500kHz | 50kHz to 500kHz | 50kHz to 500kHz |
| Frequency Sync Range | 60kHz to 460kHz | 60kHz to 460kHz | 60kHz to 460kHz |
| Integrated Inductor | no | no | no |
| Ishutdown, µA | 140 | 140 | 140 |
| Isupply, mA | 8 | 8 | 8 |
| Max Phases | 12 | 12 | 12 |
| Monolithic | no | no | no |
| Number of Outputs | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 85 | -40 to 125 | -40 to 85 |
| Output Current, A | 30 | 30 | 30 |
| Polyphase | yes | yes | yes |
| Sense Resistor | Rsense, DCR | Rsense, DCR | Rsense, DCR |
| Switch Current, A | 30 | 30 | 30 |
| Synchronous | yes | yes | yes |
| Topology | Buck, Boost | Buck, Boost | Buck, Boost |
| Topology 1 | Buck, Boost | Buck, Boost | Buck, Boost |
| Vin Max, V | 100 | 100 | 100 |
| Vin Min, V | 1.2 | 1.2 | 1.2 |
| Vout Max, V | 100 | 100 | 100 |
| Vout Maximum | 100 | 100 | 100 |
| Vout Min, V | 1.2 | 1.2 | 1.2 |
| Vref Accuracy Over Temp, % | 1 | 1 | 1 |
Eco Plan
| LTC3871ELXE#PBF | LTC3871HLXE#PBF | LTC3871ILXE#PBF | |
|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant |
Model Line
Series: LTC3871 (3)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | External Power Switch Buck Controllers
- Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
