Datasheet Linear Technology LT3972
| Manufacturer | Linear Technology |
| Series | LT3972 |
33V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75µA Quiescent Current
Datasheets
Datasheet LT3972
PDF, 346 Kb, Language: en, File uploaded: Sep 19, 2017, Pages: 24
33V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75μA Quiescent Current
33V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75μA Quiescent Current
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Prices
Packaging
| LT3972EDD#PBF | LT3972EDD#TRPBF | LT3972EMSE#PBF | LT3972EMSE#TRPBF | LT3972HMSE#PBF | LT3972HMSE#TRPBF | LT3972IDD#PBF | LT3972IDD#TRPBF | LT3972IMSE#PBF | LT3972IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Package | 3x3 DFN-10 Package Outline Drawing | 3x3 DFN-10 Package Outline Drawing | MS-10E Package Outline Drawing | MS-10E Package Outline Drawing | MS-10E Package Outline Drawing | MS-10E Package Outline Drawing | 3x3 DFN-10 Package Outline Drawing | 3x3 DFN-10 Package Outline Drawing | MS-10E Package Outline Drawing | MS-10E Package Outline Drawing |
| Package Code | DD | DD | MSE | MSE | MSE | MSE | DD | DD | MSE | MSE |
| Package Index | 05-08-1699 | 05-08-1699 | 05-08-1664 | 05-08-1664 | 05-08-1664 | 05-08-1664 | 05-08-1699 | 05-08-1699 | 05-08-1664 | 05-08-1664 |
| Pin Count | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Parametrics
| Parameters / Models | LT3972EDD#PBF | LT3972EDD#TRPBF | LT3972EMSE#PBF | LT3972EMSE#TRPBF | LT3972HMSE#PBF | LT3972HMSE#TRPBF | LT3972IDD#PBF | LT3972IDD#TRPBF | LT3972IMSE#PBF | LT3972IMSE#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 |
| Demo Boards | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A | DC1458A |
| Design Tools | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model |
| Export Control | no | no | no | no | no | no | no | no | no | no |
| Features | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, Resistor Set Frequency, External Synchronization, Power Good |
| Frequency, kHz | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 | 2400 |
| Frequency Adjust Range | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz | 250kHz - 2.4MHz |
| Frequency Sync Range | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz | 250kHz - 2MHz |
| Integrated Inductor | no | no | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Isupply, mA | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
| Max Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Monolithic | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes |
| Number of Outputs | 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 |
| Output Current, A | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| Over Voltage Protection, V | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 |
| Polyphase | no | no | no | no | no | no | no | no | no | no |
| Switch Current, A | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 |
| Synchronous | no | no | no | no | no | no | no | no | no | no |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Vin Min, V | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 |
| Vout Max, V | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Vout Maximum | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V | 30V |
| Vout Min, V | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 | 0.79 |
Eco Plan
| LT3972EDD#PBF | LT3972EDD#TRPBF | LT3972EMSE#PBF | LT3972EMSE#TRPBF | LT3972HMSE#PBF | LT3972HMSE#TRPBF | LT3972IDD#PBF | LT3972IDD#TRPBF | LT3972IMSE#PBF | LT3972IMSE#TRPBF | |
|---|---|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT3972 (10)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
