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Product Detailed Parameters
- Description：IC REG BUCK ADJ DL 28TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：3.4V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.79V
- Voltage - Output (Max)：41.8V
- Current - Output：1.5A, 2.5A
- Frequency - Switching：200kHz ~ 3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT8616IFE#TRPBF is a dual synchronous monolithic step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 5.8V to 42V and delivers up to 3A per channel, totaling 6.5A combined output current. The device features a fixed switching frequency of 2.05MHz and consumes only 6.5µA of quiescent current when both channels are enabled. Packaged in a thermally enhanced 28-lead TSSOP (IFE), it supports adjustable output voltages down to 0.8V.
Feature Summary
- Dual-channel architecture providing independent or combined high-current outputs
- Ultra-low quiescent current consumption for efficient battery operation
- Integrated soft-start and tracking capabilities for controlled power-up sequences
- High-speed synchronous rectification for improved efficiency across load ranges
Applications
- Industrial distributed power supplies
- Point-of-load regulation for processors and FPGAs
- Battery-powered instrumentation systems
- Telecommunications infrastructure equipment
Procurement Notes
Verify the suffix #TRPBF indicates tape-and-reel packaging distinct from bulk #PBF variants. Confirm the IFE package designation matches the required thermal performance and pinout for your PCB layout. Ensure compatibility with the 2.05MHz fixed frequency regarding EMI filtering requirements. Cross-reference the specific lot traceability if required for quality assurance protocols.
Selection Notes
Select this component when dual isolated or coupled buck rails are needed from a single high-voltage source. The 2.05MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 42V maximum input rating against your system's transient voltage levels. Evaluate the thermal dissipation capabilities of the TSSOP package under maximum load conditions.
Part Context
This part belongs to the LT8616 family of dual synchronous buck converters. It shares architectural similarities with other high-voltage regulators but distinguishes itself through its specific dual-channel current sharing and low standby power characteristics. The family targets applications requiring compact power solutions with strict efficiency constraints.
FAQ
What is the minimum output voltage supported by the LT8616IFE#TRPBF?
The device supports adjustable output voltages down to 0.8V.
How does the quiescent current behave when one channel is disabled?
The datasheet specifies 6.5µA quiescent current with both channels enabled; individual channel shutdown behavior should be verified in the official electrical characteristics table.
