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LTC3865IUH#PBF is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR BUCK 32QFN. Review the specifications below when checking this part for your BOM.
DC DC Switching Controllers specifications for LTC3865IUH#PBF
- Description：IC REG CTRLR BUCK 32QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 38V
- Frequency - Switching：250kHz ~ 770kHz
- Duty Cycle (Max)：95%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
- Grade：-
- Qualification：-
DC DC Switching Controllers datasheet and documents for LTC3865IUH#PBF
DC DC Switching Controllers Overview
The LTC3865IUH#PBF is a dual, two-phase synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5 V to 38 V and supports output voltages from 600 mV to 5 V. The device delivers up to 25 A per phase with a switching frequency of 770 kHz. It features a QFN-32 package and functions across a temperature range of -40 °C to +125 °C. Load regulation is specified at 0.01 %, while the operating supply current is 3 mA.
DC DC Switching Controllers Feature Summary
- Dual-channel architecture providing independent control for two phases
- Pin-selectable output configuration for flexible system design
- Synchronous rectification driving all N-channel MOSFET stages
- Integrated precision reference and power good indicators
DC DC Switching Controllers Applications
- Distributed power systems requiring high current density
- Industrial equipment power management
- Telecommunications infrastructure supplies
- Battery-operated digital devices
DC DC Switching Controllers Procurement Notes
Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the QFN-32 package dimensions match your PCB footprint requirements. Ensure the input voltage does not exceed 38 V during operation. Check for availability constraints as distribution may be limited in certain regions.
DC DC Switching Controllers Selection Notes
Select this component when dual-phase synchronization is required for reduced input ripple. The 770 kHz frequency balances efficiency and size. Consider the 25 A per phase capability against thermal dissipation needs. Verify that the 600 mV minimum output meets load requirements. Compare against the LTC3865-1 variant if pin selection is not needed.
DC DC Switching Controllers Part Context
This part belongs to the LTC3865 series of PolyPhase controllers. It complements other Analog Devices PMICs like the LTC3890 for higher voltage applications. The device integrates with development kits such as DC1479A and DC1480A for evaluation. It serves as a core component in multi-rail power architectures.
DC DC Switching Controllers Replacement Considerations
The LTC3865IUH-1#PBF is a related variant without pin-selectable outputs. Cross-reference electrical parameters such as input voltage and switching frequency before substitution. Verify package compatibility between QFN-32 variants.
DC DC Switching Controllers FAQ
What is the maximum input voltage for the LTC3865IUH#PBF?
The maximum input voltage is 38 V.
Does the LTC3865 support clock synchronization?
Yes, the device supports clock synchronization for multi-unit paralleling.
What is the typical operating supply current?
The operating supply current is typically 3 mA.
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