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Product Detailed Parameters
- Description：IC REG BUCK ADJ QUAD 40QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：4
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：3V ~ 42V
- Frequency - Switching：250kHz ~ 2.2MHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：40-WFQFN Exposed Pad
- Supplier Device Package：40-QFN (6x6)
- Grade：-
- Qualification：-
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Overview
The LT8603EUJ#TRPBF is a specialized power management IC featuring four independent buck converters and one boost converter. It supports an input voltage range of 2.6V to 42V, with output currents of 1.5A, 1.8A, and 2.5A for the buck channels. The device operates within a temperature range of -40°C to +125°C and utilizes a 40-lead QFN package measuring 6mm x 6mm.
Feature Summary
- Integrates multiple synchronous buck regulators alongside a boost converter in a single compact package
- Designed for low quiescent current operation to enhance system efficiency during standby modes
- Supports wide input voltage ranges suitable for industrial and automotive power buses
Applications
- Industrial control systems requiring multi-rail power distribution
- Automotive infotainment and gateway modules
- Telecommunications infrastructure equipment
- Solar micro-inverter power stages
Procurement Notes
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the manufacturer designation matches Analog Devices Inc. to ensure authenticity. Cross-reference the full part number against official distributor catalogs to avoid substitution errors involving different package styles or thermal ratings.
Selection Notes
Select this component when a design requires multiple regulated outputs from a single high-voltage source without external controller complexity. Evaluate the total output current requirements across all four buck channels to ensure they do not exceed individual channel limits. Consider the thermal performance of the 40-lead QFN package relative to the PCB copper area available for heat dissipation.
Part Context
This part belongs to the LT8603 family of integrated power management solutions. It consolidates multiple switching regulators into one chip, reducing bill-of-materials count compared to discrete solutions. The series targets applications needing high integration density and reliable power sequencing in space-constrained environments.
Replacement Considerations
LT8603EUJ#PBF serves as the tube-packaged equivalent of this reel-based component. Both share identical electrical specifications and pinouts. Verify that the manufacturing lot and traceability requirements align with the chosen packaging format before finalizing the substitute selection.
