Datasheet Linear Technology LT3514
| Manufacturer | Linear Technology |
| Series | LT3514 |
Triple Step-Down Switching Regulator with 100% Duty Cycle Operation
Datasheets
Datasheet LT3514
PDF, 482 Kb, Language: en, File uploaded: Sep 18, 2017, Pages: 26
Triple Step-Down Switching Regulator with 100% Duty Cycle Operation
Triple Step-Down Switching Regulator with 100% Duty Cycle Operation
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Prices
Packaging
| LT3514EFE#PBF | LT3514EFE#TRPBF | LT3514EUFD#PBF | LT3514EUFD#TRPBF | LT3514IFE#PBF | LT3514IFE#TRPBF | LT3514IUFD#PBF | LT3514IUFD#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | TSSOP-24 Package Outline Drawing | TSSOP-24 Package Outline Drawing | 4x5 QFN-28 Package Outline Drawing | 4x5 QFN-28 Package Outline Drawing | TSSOP-24 Package Outline Drawing | TSSOP-24 Package Outline Drawing | 4x5 QFN-28 Package Outline Drawing | 4x5 QFN-28 Package Outline Drawing |
| Package Code | FE | FE | UFD | UFD | FE | FE | UFD | UFD |
| Package Index | 05-08-1771 | 05-08-1771 | 05-08-1712 | 05-08-1712 | 05-08-1771 | 05-08-1771 | 05-08-1712 | 05-08-1712 |
| Pin Count | 24 | 24 | 28 | 28 | 24 | 24 | 28 | 28 |
Parametrics
| Parameters / Models | LT3514EFE#PBF | LT3514EFE#TRPBF | LT3514EUFD#PBF | LT3514EUFD#TRPBF | LT3514IFE#PBF | LT3514IFE#TRPBF | LT3514IUFD#PBF | LT3514IUFD#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 | DC1980A | DC1980A | DC1980A | DC1980A | DC1980A | DC1980A | DC1980A | DC1980A |
| Design Tools | 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 |
| Features | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good | Resistor Set Frequency, External Synchronization, Anti-Phase Switching, Tracking, 100% Duty Cycle, Power Good |
| Frequency, kHz | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 | 2200 |
| Frequency Adjust Range | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz |
| Frequency Sync Range | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz | 350kHz to 2.2MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| Isupply, mA | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 |
| Monolithic | yes | yes | yes | yes | yes | yes | yes | yes |
| Number of Outputs | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 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 |
| Output Current 2, A | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Current 3, A | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Polyphase | no | no | no | no | no | no | no | no |
| Switch Current, A | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| Switch Current 2, A | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 |
| Switch Current 3, A | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 | 1.75 |
| Synchronous | no | no | no | no | no | no | no | no |
| 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 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Vin Min, V | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 |
| Vout Max, V | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Vout Max 2, V | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Vout Max 3, V | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Vout Maximum | Vin | Vin | Vin | Vin | Vin | Vin | Vin | Vin |
| Vout Min, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vout Min 2, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vout Min 3, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vref Accuracy Over Temp, % | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Eco Plan
| LT3514EFE#PBF | LT3514EFE#TRPBF | LT3514EUFD#PBF | LT3514EUFD#TRPBF | LT3514IFE#PBF | LT3514IFE#TRPBF | LT3514IUFD#PBF | LT3514IUFD#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT3514 (8)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Internal Power Switch Buck
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
