Datasheet Linear Technology LTC3646
| Manufacturer | Linear Technology |
| Series | LTC3646 |
40V, 1A Synchronous Step-Down Converter
Datasheets
Datasheet LTC3646, LTC3646-1
PDF, 596 Kb, Language: en, File uploaded: Sep 22, 2017, Pages: 28
40V, 1A Synchronous Step-Down Converter
40V, 1A Synchronous Step-Down Converter
Extract from the document
Prices
Packaging
| LTC3646EDE#PBF | LTC3646EDE#TRPBF | LTC3646EMSE#PBF | LTC3646EMSE#TRPBF | LTC3646HDE#PBF | LTC3646HDE#TRPBF | LTC3646HMSE#PBF | LTC3646HMSE#TRPBF | LTC3646IDE#PBF | LTC3646IDE#TRPBF | LTC3646IMSE#PBF | LTC3646IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Package | 4x3 DFN-14 Package Outline Drawing | 4x3 DFN-14 Package Outline Drawing | MS-16E Package Outline Drawing | MS-16E Package Outline Drawing | 4x3 DFN-14 Package Outline Drawing | 4x3 DFN-14 Package Outline Drawing | MS-16E Package Outline Drawing | MS-16E Package Outline Drawing | 4x3 DFN-14 Package Outline Drawing | 4x3 DFN-14 Package Outline Drawing | MS-16E Package Outline Drawing | MS-16E Package Outline Drawing |
| Package Code | DE | DE | MSE | MSE | DE | DE | MSE | MSE | DE | DE | MSE | MSE |
| Package Index | 05-08-1708 | 05-08-1708 | 05-08-1667 | 05-08-1667 | 05-08-1708 | 05-08-1708 | 05-08-1667 | 05-08-1667 | 05-08-1708 | 05-08-1708 | 05-08-1667 | 05-08-1667 |
| Pin Count | 14 | 14 | 16 | 16 | 14 | 14 | 16 | 16 | 14 | 14 | 16 | 16 |
Parametrics
| Parameters / Models | LTC3646EDE#PBF | LTC3646EDE#TRPBF | LTC3646EMSE#PBF | LTC3646EMSE#TRPBF | LTC3646HDE#PBF | LTC3646HDE#TRPBF | LTC3646HMSE#PBF | LTC3646HMSE#TRPBF | LTC3646IDE#PBF | LTC3646IDE#TRPBF | LTC3646IMSE#PBF | LTC3646IMSE#TRPBF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Architecture | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode | Constant Frequency Controlled On-Time Current Mode |
| Demo Boards | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B | DC1731A-A,DC1731A-B,DC1820A-A,DC1820A-B |
| Design Tools | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File | LTspice File,LTpowerCAD File |
| Export Control | no | no | no | no | no | no | no | no | no | no | no | no |
| Features | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good | Resistor Set Frequency, External Synchronization, Burst Mode, Power Good |
| Frequency, kHz | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 |
| Frequency Adjust Range | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz |
| Frequency Sync Range | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz | 200kHz - 3MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Isupply, mA | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 | 0.140 |
| Max Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Monolithic | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes |
| 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 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Polyphase | no | no | no | no | no | no | no | no | no | no | no | no |
| Switch Current, A | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| Synchronous | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Vin Min, V | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Vout Max, V | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Vout Maximum | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V |
| Vout Min, V | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Vref Accuracy Over Temp, % | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Eco Plan
| LTC3646EDE#PBF | LTC3646EDE#TRPBF | LTC3646EMSE#PBF | LTC3646EMSE#TRPBF | LTC3646HDE#PBF | LTC3646HDE#TRPBF | LTC3646HMSE#PBF | LTC3646HMSE#TRPBF | LTC3646IDE#PBF | LTC3646IDE#TRPBF | LTC3646IMSE#PBF | LTC3646IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Other Options
Model Line
Series: LTC3646 (12)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck | High Input Voltage Buck
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
