Datasheet Linear Technology LT1977
| Manufacturer | Linear Technology |
| Series | LT1977 |
High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100µA Quiescent Current
Datasheets
Datasheet LT1977
PDF, 334 Kb, Language: en, File uploaded: Sep 3, 2017, Pages: 24
High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100µA Quiescent Current
High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100µA Quiescent Current
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Prices
Packaging
| LT1977EFE#PBF | LT1977EFE#TRPBF | LT1977IFE#PBF | LT1977IFE#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | TSSOP-16 Package Outline Drawing | TSSOP-16 Package Outline Drawing | TSSOP-16 Package Outline Drawing | TSSOP-16 Package Outline Drawing |
| Package Code | FE | FE | FE | FE |
| Package Index | 05-08-1663 (BC) | 05-08-1663 (BC) | 05-08-1663 (BC) | 05-08-1663 (BC) |
| Pin Count | 16 | 16 | 16 | 16 |
Parametrics
| Parameters / Models | LT1977EFE#PBF | LT1977EFE#TRPBF | LT1977IFE#PBF | LT1977IFE#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC639A | DC639A | DC639A | DC639A |
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no |
| Features | Burst Mode, External Synchronization | Burst Mode, External Synchronization | Burst Mode, External Synchronization | Burst Mode, External Synchronization |
| Frequency, kHz | 500 | 500 | 500 | 500 |
| Frequency Sync Range | 575kHz - 700kHz | 575kHz - 700kHz | 575kHz - 700kHz | 575kHz - 700kHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 0.1 | 0.1 | 0.1 | 0.1 |
| Isupply, mA | 0.1 | 0.1 | 0.1 | 0.1 |
| Max Phases | 1 | 1 | 1 | 1 |
| Monolithic | yes | yes | yes | yes |
| 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 | 1.24 | 1.24 | 1.24 | 1.24 |
| Polyphase | no | no | no | no |
| Switch Current, A | 2.4 | 2.4 | 2.4 | 2.4 |
| Synchronous | no | no | no | no |
| Topology | Buck | Buck | Buck | Buck |
| Vin Max, V | 60 | 60 | 60 | 60 |
| Vin Min, V | 3.3 | 3.3 | 3.3 | 3.3 |
| Vout Max, V | 54 | 54 | 54 | 54 |
| Vout Maximum | .90VIN | .90VIN | .90VIN | .90VIN |
| Vout Min, V | 1.2 | 1.2 | 1.2 | 1.2 |
| Vref Accuracy Over Temp, % | 2 | 2 | 2 | 2 |
Eco Plan
| LT1977EFE#PBF | LT1977EFE#TRPBF | LT1977IFE#PBF | LT1977IFE#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LT1977 (4)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck
