Datasheet Linear Technology LT1777
| Manufacturer | Linear Technology |
| Series | LT1777 |
Low Noise Step-Down Switching Regulator
Datasheets
Datasheet LT1777
PDF, 286 Kb, Language: en, File uploaded: Sep 3, 2017, Pages: 24
Low Noise Step-Down Switching Regulator
Low Noise Step-Down Switching Regulator
Extract from the document
Prices
Packaging
| LT1777CS#PBF | LT1777CS#TRPBF | LT1777IS#PBF | LT1777IS#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | SO-16 Package Outline Drawing | SO-16 Package Outline Drawing | SO-16 Package Outline Drawing | SO-16 Package Outline Drawing |
| Package Code | S | S | S | S |
| Package Index | 05-08-1610 (S16) | 05-08-1610 (S16) | 05-08-1610 (S16) | 05-08-1610 (S16) |
| Pin Count | 16 | 16 | 16 | 16 |
Parametrics
| Parameters / Models | LT1777CS#PBF | LT1777CS#TRPBF | LT1777IS#PBF | LT1777IS#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Demo Boards | DC242A | DC242A | DC242A | DC242A |
| Design Tools | LTspice Model | LTspice Model | LTspice Model | LTspice Model |
| Export Control | no | no | no | no |
| Features | Low EMI, Adjustable Slew Rate, External Synchronization | Low EMI, Adjustable Slew Rate, External Synchronization | Low EMI, Adjustable Slew Rate, External Synchronization | Low EMI, Adjustable Slew Rate, External Synchronization |
| Frequency, kHz | 100 | 100 | 100 | 100 |
| Frequency Sync Range | 130kHz - 250kHz | 130kHz - 250kHz | 130kHz - 250kHz | 130kHz - 250kHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 12 | 12 | 12 | 12 |
| Isupply, mA | 0.62 | 0.62 | 0.62 | 0.62 |
| Max Phases | 1 | 1 | 1 | 1 |
| Monolithic | yes | yes | yes | yes |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Operating Temperature Range, °C | 0 to 70 | 0 to 70 | -40 to 85 | -40 to 85 |
| Output Current, A | 0.44 | 0.44 | 0.44 | 0.44 |
| Polyphase | no | no | no | no |
| Switch Current, A | 0.7 | 0.7 | 0.7 | 0.7 |
| Synchronous | no | no | no | no |
| Topology | Buck | Buck | Buck | Buck |
| Vin Max, V | 48 | 48 | 48 | 48 |
| Vin Min, V | 7 | 7 | 7 | 7 |
| Vout Max, V | 30 | 30 | 30 | 30 |
| Vout Maximum | .85VIN | .85VIN | .85VIN | .85VIN |
| Vout Min, V | 1.24 | 1.24 | 1.24 | 1.24 |
| Vref Accuracy Over Temp, % | 1.2 | 1.2 | 1.2 | 1.2 |
Eco Plan
| LT1777CS#PBF | LT1777CS#TRPBF | LT1777IS#PBF | LT1777IS#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Design Notes
- LT1777 High Voltage, Low Noise Buck Switching Regulator &mdash DN212PDF, 115 Kb, File published: Sep 2, 1999Extract from the document
Articles
- Generating Low Cost, Low Noise, Dual-Voltage Supplies &mdash LT JournalPDF, 72 Kb, File published: Feb 1, 1999Extract from the document
Model Line
Series: LT1777 (4)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | Internal Power Switch Buck
- Power Management > Switching Regulator > Ultralow Noise Regulators
