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Product Detailed Parameters
- Description：IC REG BST CHRG PUMP ADJ 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-TSSOP-EP
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Overview
The LT3579IFE#PBF is a high-performance switching regulator IC manufactured by Analog Devices Inc. It integrates a 6A switch capable of supporting boost, inverting, Cuk, SEPIC, and flyback topologies. The device operates with an input voltage range from 2.5V to 16V and supports adjustable output voltages between 1.215V and 42V. It features a programmable switching frequency ranging from 200kHz to 2.5MHz. The component is housed in a 20-WFQFN package with an exposed pad and is rated for operation within a temperature range of -40°C to 125°C.
Feature Summary
- Integrates a 6A power switch for high-current capability across multiple DC-DC converter topologies
- Supports versatile circuit configurations including boost, inverting, Cuk, SEPIC, and flyback
- Features programmable switching frequency to optimize efficiency and external component size
- Includes integrated fault protection mechanisms for system reliability
Applications
- Industrial systems requiring flexible power conversion architectures
- Battery-powered equipment utilizing boost or inverting topologies
- Automotive electronics operating within specified voltage ranges
- Telecommunications infrastructure power supplies
Procurement Notes
Verify the specific suffix against official Analog Devices documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status through current datasheets. Check availability as distribution channels may vary. Ensure the selected package matches PCB layout requirements. Validate thermal performance specifications for the intended operating environment.
Selection Notes
Select this component when designing circuits requiring a single IC to support multiple non-isolated converter topologies. Consider the 6A switch rating for load requirements. Evaluate the 200kHz to 2.5MHz frequency range for EMI and inductor size trade-offs. Verify input voltage compatibility with the 2.5V to 16V range. Assess thermal management needs for the QFN package.
Part Context
This part belongs to the LT3579 family of multi-topology switching regulators. It is designed to replace discrete solutions that previously required separate controllers and switches for different converter types. The integration reduces board space and simplifies design complexity for applications needing flexible power stage configurations.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters before implementation.
