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Product Detailed Parameters
- Description：IC REG BOOST CUK ADJ 6A 36QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Cuk, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1.6V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：40V (Switch)
- Current - Output：6A (Switch)
- Frequency - Switching：100kHz ~ 1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：36-WFQFN, 28 Leads, Exposed Pad
- Supplier Device Package：36-QFN (5x6)
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Overview
The LT3959IUHE#TRPBF is a high-efficiency switching regulator IC from Analog Devices, designed for versatile power conversion topologies including boost, Cuk, and SEPIC configurations. It supports both positive and negative output voltages with an adjustable range starting at 0.8V. The device delivers up to 6A of switch current and operates with an input voltage range of 1.6V to 40V. It features a programmable switching frequency between 100kHz and 1MHz. Packaged in a 36-lead QFN (5x6mm) with an exposed pad, it ensures reliable operation across a junction temperature range of -40°C to +125°C.
Feature Summary
- Supports multiple converter topologies including boost, Cuk, and SEPIC for flexible system design.
- Capable of generating both positive and negative output voltages from a single input source.
- Integrated synchronous rectification for improved efficiency and reduced external component count.
- Programmable switching frequency allows optimization for size and performance requirements.
Applications
- Industrial control systems requiring isolated or inverted power rails
- Battery-powered equipment needing extended runtime via efficient step-up conversion
- Automotive electronics operating with varying input voltage levels
- Telecommunications infrastructure utilizing SEPIC converters for stable regulation
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc. to ensure authenticity. Check for RoHS compliance documentation if required by your assembly process. Ensure the 36-QFN package dimensions match your PCB footprint exactly. Validate that the 6A current rating meets your peak load requirements before finalizing procurement.
Selection Notes
Select this component when designing circuits requiring bidirectional voltage conversion capabilities. Consider the 40V maximum input limit against your source voltage peaks. Evaluate thermal management needs due to the 6A switch current capability within the compact QFN package. Compare the 100kHz to 1MHz frequency range against EMI constraints and inductor size preferences. Ensure the 0.8V reference voltage aligns with your minimum output voltage targets.
Part Context
This part belongs to the LT3959 series, specialized for wide-input voltage applications. It complements other Analog Devices PMIC solutions by offering multi-topology flexibility in a single package. The series targets designs where space constraints and efficiency are critical. It serves as a core power stage controller for complex power distribution networks.
Replacement Considerations
LT3959EUHE#PBF is a pin-compatible alternative available in tube packaging. Verify that the packaging difference does not impact your automated assembly line. Both parts share identical electrical specifications and functionality. No functional changes are introduced by the suffix variation.
