Datasheet Linear Technology LT3840
| Manufacturer | Linear Technology |
| Series | LT3840 |
Wide Input Range Synchronous Regulator Controller with Accurate Current Limit
Datasheets
Datasheet LT3840
PDF, 292 Kb, Language: en, File uploaded: Sep 19, 2017, Pages: 24
Wide Input Range Synchronous Regulator Controller with Accurate Current Limit
Wide Input Range Synchronous Regulator Controller with Accurate Current Limit
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Prices
Packaging
| LT3840EFE#PBF | LT3840EFE#TRPBF | LT3840EUFE#PBF | LT3840EUFE#TRPBF | LT3840HFE#PBF | LT3840HFE#TRPBF | LT3840IFE#PBF | LT3840IFE#TRPBF | LT3840IUFE#PBF | LT3840IUFE#TRPBF | LT3840MPFE#PBF | LT3840MPFE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Package | TSSOP-28 Package Outline Drawing | TSSOP-28 Package Outline Drawing | 4x6 QFN-38 Package Outline Drawing | 4x6 QFN-38 Package Outline Drawing | TSSOP-28 Package Outline Drawing | TSSOP-28 Package Outline Drawing | TSSOP-28 Package Outline Drawing | TSSOP-28 Package Outline Drawing | 4x6 QFN-38 Package Outline Drawing | 4x6 QFN-38 Package Outline Drawing | TSSOP-28 Package Outline Drawing | TSSOP-28 Package Outline Drawing |
| Package Code | FE | FE | UFE | UFE | FE | FE | FE | FE | UFE | UFE | FE | FE |
| Package Index | 05-08-1663 (EA) | 05-08-1663 (EA) | 05-08-1750 | 05-08-1750 | 05-08-1663 (EA) | 05-08-1663 (EA) | 05-08-1663 (EA) | 05-08-1663 (EA) | 05-08-1750 | 05-08-1750 | 05-08-1663 (EA) | 05-08-1663 (EA) |
| Pin Count | 28 | 28 | 38 | 38 | 28 | 28 | 28 | 28 | 38 | 38 | 28 | 28 |
Parametrics
| Parameters / Models | LT3840EFE#PBF | LT3840EFE#TRPBF | LT3840EUFE#PBF | LT3840EUFE#TRPBF | LT3840HFE#PBF | LT3840HFE#TRPBF | LT3840IFE#PBF | LT3840IFE#TRPBF | LT3840IUFE#PBF | LT3840IUFE#TRPBF | LT3840MPFE#PBF | LT3840MPFE#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 | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A | DC1909A |
| Design Tools | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File | LTspice File |
| Export Control | no | no | no | no | no | no | no | no | no | no | no | no |
| Features | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, Output Current Regulation, Output Current Monitor, Integrated Buck-Boost For Gate Drive |
| Frequency, kHz | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 |
| Frequency Adjust Range | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz |
| Frequency Sync Range | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz | 50kHz - 1MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Isupply, mA | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 |
| Max Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Monolithic | no | no | no | no | no | no | no | no | no | no | no | no |
| Number of Outputs | 1 | 1 | 1 | 1 | 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 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -55 to 125 | -55 to 125 |
| Output Current, A | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Polyphase | no | no | no | no | no | no | no | no | no | no | no | no |
| Sense Resistor | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense | Rsense |
| Switch Current, A | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Synchronous | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes |
| Topology | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting |
| Topology 1 | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting | Buck, Inverting |
| Vin Max, V | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Vin Min, V | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Vout Max, V | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Vout Maximum | 60V | 60V | 60V | 60V | 60V | 60V | 60V | 60V | 60V | 60V | 60V | 60V |
| Vout Min, V | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 | 1.25 |
| Vref Accuracy Over Temp, % | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Vswitch Max, V | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
Eco Plan
| LT3840EFE#PBF | LT3840EFE#TRPBF | LT3840EUFE#PBF | LT3840EUFE#TRPBF | LT3840HFE#PBF | LT3840HFE#TRPBF | LT3840IFE#PBF | LT3840IFE#TRPBF | LT3840IUFE#PBF | LT3840IUFE#TRPBF | LT3840MPFE#PBF | LT3840MPFE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT3840 (12)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
