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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ DL 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Buck, Boost, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：2.6V
- Voltage - Input (Max)：50V
- Voltage - Output (Min/Fixed)：2.6V
- Voltage - Output (Max)：50V (Switch)
- Current - Output：1.35A (Switch), 2.1A (Switch)
- Frequency - Switching：100kHz ~ 2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-QFN (4x5)
- Grade：-
- Qualification：-
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Overview
The LT8471EUFD#TRPBF is a dual-channel, multi-topology DC/DC converter from Analog Devices. It integrates two 2A and one 500mA internal power switches rated for 50V. The device supports Buck, Boost, SEPIC, ZETA, Flyback, and Inverting configurations. Input voltage ranges from 2.6V to 50V with a switching frequency of 100kHz to 2MHz. Quiescent current is 29µA (active) or 2.4mA (sleep). Output current per switch is 1.35A. Operating temperature spans -40°C to +125°C in a 28-lead QFN package.
Feature Summary
- Dual primary channels configurable as Buck, Boost, SEPIC, ZETA, Flyback, or Inverting converters
- Integrated 500mA Skyhook channel for efficient boosted input voltage generation
- Anti-phase switching capability to reduce input ripple
- Programmable UVLO and OVLO via the OV/UV pin
Applications
- Local power supply designs requiring multiple voltage rails
- Systems needing simultaneous positive and negative outputs from a single input
- Industrial applications utilizing wide input voltage ranges up to 50V
Procurement Notes
Verify the specific suffix EUFD corresponds to the extended temperature range (-40°C to +125°C) and 28-lead QFN package. Confirm RoHS compliance status through official manufacturer documentation. Ensure compatibility with the DC1854A development kit if evaluation is required. Check current availability as distribution may vary.
Selection Notes
Select this component when designing circuits that require flexible topology configuration without external high-voltage switches. The integrated 50V rating suits industrial inputs. Consider the 29µA quiescent current for efficiency-sensitive applications. Verify thermal performance within the 28-QFN package for the expected load conditions.
Part Context
This part belongs to the LT8471 family of dual-channel multi-topology converters. It shares core architecture with variants like LT8471IUFD but differs in temperature grade and packaging. The series is designed for compact local regulation solutions where space and component count are critical constraints.
Replacement Considerations
LT8471IUFD#TRPBF is a related variant with different temperature specifications. Verify electrical parameters and package dimensions before substitution. No other direct public substitutes are confirmed.
