Datasheet Linear Technology LT8709
| Manufacturer | Linear Technology |
| Series | LT8709 |
Negative Input Synchronous Multi-Topology DC/DC Controller
Datasheets
Datasheet LT8709
PDF, 802 Kb, Language: en, File uploaded: Sep 20, 2017, Pages: 48
Negative Input Synchronous Multi-Topology DC/DC Controller
Negative Input Synchronous Multi-Topology DC/DC Controller
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Packaging
| LT8709EFE#PBF | LT8709EFE#TRPBF | LT8709IFE#PBF | LT8709IFE#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | TSSOP-20 Package Outline Drawing | TSSOP-20 Package Outline Drawing | TSSOP-20 Package Outline Drawing | TSSOP-20 Package Outline Drawing |
| Package Code | FE | FE | FE | FE |
| Package Index | 05-08-1663 (CB) | 05-08-1663 (CB) | 05-08-1663 (CB) | 05-08-1663 (CB) |
| Pin Count | 20 | 20 | 20 | 20 |
Parametrics
| Parameters / Models | LT8709EFE#PBF | LT8709EFE#TRPBF | LT8709IFE#PBF | LT8709IFE#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC2148A | DC2148A | DC2148A | DC2148A |
| Design Tools | LTspice File | LTspice File | LTspice File | LTspice File |
| Export Control | no | no | no | no |
| Features | Output Current Monitor, Output Current Regulation, Power Good, Resistor Set Frequency, External Synchronization | Output Current Monitor, Output Current Regulation, Power Good, Resistor Set Frequency, External Synchronization | Output Current Monitor, Output Current Regulation, Power Good, Resistor Set Frequency, External Synchronization | Output Current Monitor, Output Current Regulation, Power Good, Resistor Set Frequency, External Synchronization |
| Frequency, kHz | 750 | 750 | 750 | 750 |
| Frequency Adjust Range | Up to 750kHz | Up to 750kHz | Up to 750kHz | Up to 750kHz |
| Frequency Sync Range | Up to 750kHz | Up to 750kHz | Up to 750kHz | Up to 750kHz |
| Integrated Inductor | no | no | no | no |
| Isupply, mA | 4 | 4 | 4 | 4 |
| 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 | -40 to 85 | -40 to 85 |
| Output Current, A | 25 | 25 | 25 | 25 |
| Polyphase | no | no | no | no |
| Sense Resistor | Rsense | Rsense | Rsense | Rsense |
| Switch Current, A | 25 | 25 | 25 | 25 |
| Synchronous | yes | yes | yes | yes |
| Topology | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting |
| Topology 1 | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting | Buck, Boost, Sepic, Inverting |
| Vin Max, V | -4.5 | -4.5 | -4.5 | -4.5 |
| Vin Min, V | -80 | -80 | -80 | -80 |
| Vout Max, V | 80 | 80 | 80 | 80 |
| Vout Maximum | 80V | 80V | 80V | 80V |
| Vout Min, V | 1.234 | 1.234 | 1.234 | 1.234 |
| Vswitch Max, V | 80 | 80 | 80 | 80 |
Eco Plan
| LT8709EFE#PBF | LT8709EFE#TRPBF | LT8709IFE#PBF | LT8709IFE#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT8709 (4)
Manufacturer's Classification
- Power Management > Switching Regulator > Inverting Regulators | SEPIC Regulators
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers
- Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost