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LTC3856EFE is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC POWER MANAGEMENT. Review the specifications below when checking this part for your BOM.
DC DC Switching Controllers specifications for LTC3856EFE
- Description：IC POWER MANAGEMENT
- Series：PolyPhase®
- 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)：94%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：38-TSSOP-EP
- Grade：-
- Qualification：-
DC DC Switching Controllers datasheet and documents for LTC3856EFE
DC DC Switching Controllers Overview
The LTC3856EFE is a dual, two-phase synchronous step-down DC/DC controller designed for Intel mobile CPUs. It operates with an input voltage range of 4.5V to 38V and supports output voltages from 600mV to 5V. The device delivers up to 60A of output current with a switching frequency adjustable between 250kHz and 770kHz. It features a low quiescent current of 40µA and a maximum operating temperature of +125°C. Packaged in a QFN-32 format, it includes load regulation of 0.01%.
DC DC Switching Controllers Feature Summary
- Integrates an internal differential amplifier for true remote sensing of regulated supply terminals.
- Supports phase-lockable fixed frequency architecture to minimize RMS ripple currents.
- Includes OPTI-LOOP compensation for optimized transient response across varying capacitance.
DC DC Switching Controllers Applications
- Intel mobile CPU core voltage regulation
- High-efficiency synchronous step-down power stages
- Distributed power systems requiring multi-phase expansion
DC DC Switching Controllers Procurement Notes
Verify the specific suffix against manufacturer documentation to confirm package type and temperature grade. Confirm RoHS compliance status through official Analog Devices channels. Ensure ordering details match the required pinout and thermal characteristics for the target PCB layout.
DC DC Switching Controllers Selection Notes
Select this component for applications requiring high current delivery with precise voltage regulation. The dual-phase design reduces input and output capacitor stress. Consider the external MOSFET selection based on the 38V maximum input rating and desired switching frequency efficiency trade-offs.
DC DC Switching Controllers Part Context
This part belongs to the LTC3856 series of high-performance synchronous controllers. It is engineered specifically for demanding processor power applications where transient response and efficiency are critical. The family utilizes advanced current-mode control techniques to maintain stability under dynamic load conditions.
DC DC Switching Controllers Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for direct cross-reference options or updated product line replacements.
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