LTC3859AMPFE
IC POWER MANAGEMENTManufacturer: Analog Devices Inc.
Categories: DC DC Switching Controllers
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The Analog Devices Inc. LTC3859AMPFE is a high-performance DC-DC controller IC designed for versatile power management applications. This component supports Buck, Buck-Boost, and SEPIC topologies, offering positive output voltage regulation across a wide input range of 4.5V to 38V. It features a configurable switching frequency from 115kHz to 835kHz, with typical operation between 350kHz and 535kHz. The LTC3859AMPFE includes advanced control features such as Enable, Frequency Control, Power Good indication, Soft Start, and Tracking, enabling precise power sequencing. With up to 100% maximum duty cycle capability, it excels in step-down configurations. The device integrates three outputs and two output phases, utilizing a synchronous rectifier for enhanced efficiency. Its 38-TSSOP-EP package with an exposed pad is suitable for surface mount applications and operates across an industrial temperature range of -55°C to 150°C. This controller is commonly implemented in automotive, industrial control, and data communication systems.
Additional Information
Series: -RoHS Status: unknownManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDownload Free CAD Model:
Technical Details:
| Packaging | Tube |
| Package / Case | 38-TFSOP (0.173"", 4.40mm Width) Exposed Pad |
| Output Type | Transistor Driver |
| Mounting Type | Surface Mount |
| Function | Step-Down, Step-Up/Step-Down |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Output Configuration | Positive |
| Frequency - Switching | 115kHz ~ 835kHz, 350kHz ~ 535kHz |
| Topology | Buck, Buck-Boost, SEPIC |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 38V |
| Supplier Device Package | 38-TSSOP-EP |
| Synchronous Rectifier | Yes |
| Control Features | Enable, Frequency Control, Power Good, Soft Start, Tracking |
| Serial Interfaces | - |
| Output Phases | 2 |
| Duty Cycle (Max) | 99%, 100% |
| Clock Sync | No |
| Number of Outputs | 3 |
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