LTC3859AHFE
IC POWER MANAGEMENTManufacturer: Analog Devices Inc.
Categories: DC DC Switching Controllers
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The Analog Devices Inc. LTC3859AHFE is a versatile DC-DC controller IC designed for step-down, step-up/step-down, and SEPIC topologies. This component features a wide input voltage range of 4.5V to 38V and supports a switching frequency adjustable from 115kHz to 835kHz. It offers three outputs with a positive output configuration and two output phases. Key control features include Enable, Frequency Control, Power Good, Soft Start, and Tracking, all integrated into a 38-TSSOP-EP package with an exposed pad for enhanced thermal performance. The LTC3859AHFE is suitable for demanding applications across automotive, industrial, and telecommunications sectors, leveraging its synchronous rectification and high duty cycle capability (up to 100%). Operating temperature range is -40°C to 150°C (TJ).
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 | -40°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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