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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 20QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Charge Pump, Cuk, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.5V
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：1.215V
- Voltage - Output (Max)：42V (Switch)
- Current - Output：6A (Switch)
- Frequency - Switching：200kHz ~ 2.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad
- Supplier Device Package：20-QFN (4x5)
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Overview
The LT3579EUFD#TRPBF is a high-performance switching regulator IC manufactured by Analog Devices Inc. It supports multiple topologies including boost, inverting, Cuk, flyback, and SEPIC configurations. The device features an integrated 6A switch capable of handling input voltages from 2.5V to 16V. It offers adjustable output voltage ranging from 1.215V up to 42V with a single output. The internal switching frequency is programmable between 200kHz and 2.5MHz. It operates within a junction temperature range of -40°C to 125°C and is housed in a 20-lead WFQFN exposed pad package.
Feature Summary
- Supports versatile DC/DC conversion topologies including boost, inverting, Cuk, flyback, and SEPIC.
- Integrates a high-current 6A power switch for robust performance.
- Features programmable switching frequency to optimize external component size and efficiency.
- Includes comprehensive fault protection mechanisms.
Applications
- Industrial control systems requiring flexible voltage regulation
- Automotive electronics operating on varying bus voltages
- Portable equipment needing efficient step-up or inversion
- Distributed power supply architectures
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the EUFD package variant matches your PCB footprint requirements. Ensure compatibility with the intended switching frequency settings. Check for RoHS compliance status relevant to your region. Validate that the 6A switch current rating meets your peak load demands.
Selection Notes
Select this component when multiple converter topologies are needed from a single IC. Consider the 6A switch capability for high-power applications. Evaluate the 2.5MHz maximum frequency for minimizing passive component size. Verify input voltage ranges align with system power sources. Assess thermal management needs given the exposed pad package.
Part Context
This part belongs to the LT3579 family of multi-topology DC/DC converters. It shares core architecture with variants like LT3579IFE and LT3579IUFD. The primary distinction lies in the package type and reel configuration. It serves as a flexible solution for complex power conversion tasks.
Replacement Considerations
LT3579IUFD#PBF is a pin-compatible alternative in tube packaging. LT3579IFE-1#PBF offers similar functionality in a different package. Verify electrical specifications match before substitution. Ensure thermal characteristics are compatible with the new package.
