Datasheet Linear Technology LTC7851
| Manufacturer | Linear Technology |
| Series | LTC7851 |
Quad Output, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing
Datasheets
LTC7851/LTC7851-1 - Quad Output, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing
PDF, 2.1 Mb, File uploaded: Sep 24, 2017
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Prices
Packaging
| LTC7851EUHH#PBF | LTC7851EUHH#TRPBF | LTC7851EUHH-1#PBF | LTC7851EUHH-1#TRPBF | LTC7851IUHH#PBF | LTC7851IUHH#TRPBF | LTC7851IUHH-1#PBF | LTC7851IUHH-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing | 5x9 QFN-58 Package Outline Drawing |
| Package Code | UHH | UHH | UHH | UHH | UHH | UHH | UHH | UHH |
| Package Index | 05-08-1672 | 05-08-1672 | 05-08-1672 | 05-08-1672 | 05-08-1672 | 05-08-1672 | 05-08-1672 | 05-08-1672 |
| Pin Count | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 |
Parametrics
| Parameters / Models | LTC7851EUHH#PBF | LTC7851EUHH#TRPBF | LTC7851EUHH-1#PBF | LTC7851EUHH-1#TRPBF | LTC7851IUHH#PBF | LTC7851IUHH#TRPBF | LTC7851IUHH-1#PBF | LTC7851IUHH-1#TRPBF |
|---|---|---|---|---|---|---|---|---|
| Architecture | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode | Constant Frequency Voltage Mode |
| Demo Boards | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C | DC2380A-A,DC2380A-B,DC2380A-C |
| Design Tools | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File | LTspice Model,LTpowerCAD File |
| Export Control | no | no | no | no | no | no | no | no |
| Features | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense | PolyPhase, External Synchronization, Resistor Set Frequency, Differential Remote Sense, DCR Current Sense |
| Frequency, kHz | 2250 | 2250 | 2250 | 2250 | 2250 | 2250 | 2250 | 2250 |
| Frequency Adjust Range | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz |
| Frequency Sync Range | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz | 250kHz - 2.25MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Isupply, mA | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Max Phases | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Monolithic | no | no | no | no | no | no | no | no |
| Number of Outputs | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 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 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Output Current 2, A | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Output Current 3, A | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Polyphase | yes | yes | yes | yes | yes | yes | yes | yes |
| Sense Resistor | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR |
| Switch Current, A | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Switch Current 2, A | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Switch Current 3, A | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Synchronous | yes | yes | yes | yes | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Topology 1 | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Topology 2 | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Topology 3 | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Vin Min, V | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Vout Max, V | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Vout Max 2, V | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Vout Max 3, V | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Vout Maximum | 5V | 5V | 5V | 5V | 5V | 5V | 5V | 5V |
| Vout Min, V | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| Vout Min 2, V | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| Vout Min 3, V | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| Vref Accuracy Over Temp, % | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 |
Eco Plan
| LTC7851EUHH#PBF | LTC7851EUHH#TRPBF | LTC7851EUHH-1#PBF | LTC7851EUHH-1#TRPBF | LTC7851IUHH#PBF | LTC7851IUHH#TRPBF | LTC7851IUHH-1#PBF | LTC7851IUHH-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LTC7851 (8)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers
