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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-1#PBF is a high-efficiency boost/inverting DC/DC converter featuring an integrated 6A switch. It operates with an input voltage range of 2.5V to 16V and supports output voltages up to 42V. The device utilizes a fixed 200kHz switching frequency, adjustable up to 2.5MHz via an external resistor. It incorporates internal soft-start, cycle-by-cycle current limiting, and thermal shutdown protection. Packaged in a 20-lead QFN (4x5mm) with an exposed pad for enhanced thermal performance.
Feature Summary
- Integrates a 6A power switch capable of driving large inductors for high-current applications
- Supports multiple topologies including boost, inverting, Cuk, flyback, and SEPIC configurations
- Includes comprehensive protection mechanisms such as thermal shutdown and cycle-by-cycle current limiting
Applications
- Automotive systems requiring wide input voltage ranges
- Industrial equipment needing isolated or inverted power rails
- Battery-powered devices utilizing boost conversion
Procurement Notes
Verify the specific suffix and package type against official Analog Devices documentation to ensure compatibility with design requirements. Confirm RoHS compliance status and lead-free manufacturing details prior to procurement. Check for any recent product change notices regarding material or assembly updates.
Selection Notes
Select this component when a single-chip solution is required for high-current boost or inversion. Evaluate thermal management needs due to the integrated 6A switch. Ensure the external component selection supports the desired switching frequency and output voltage specifications within the specified operating temperature range.
Part Context
This part belongs to the LT3579 family of monolithic switching regulators designed for versatile power conversion tasks. It distinguishes itself by combining high current capability with a compact footprint. The family targets applications demanding efficient power processing from low-voltage sources.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics carefully before replacing.
