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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 LT3959EUHE#TRPBF is a high-voltage switching regulator IC from Analog Devices, designed for boost, Cuk, and SEPIC topologies. It supports an input voltage range of 1.6V to 40V and delivers up to 6A of switch current. The device features adjustable output voltages starting from 0.8V and operates with a programmable switching frequency between 100kHz and 1MHz. Packaged in a 36-lead QFN (5x6mm) with an exposed pad, it functions reliably across an extended temperature range of -40°C to +125°C.
Feature Summary
- Supports multiple non-inverting and inverting converter topologies including Boost, Cuk, and SEPIC configurations.
- Capable of handling wide input voltage ranges down to 1.6V while sustaining high output currents.
- Features adjustable switching frequencies to optimize external component size and efficiency.
- Integrated thermal regulation and protection mechanisms for robust operation.
Applications
- Industrial power supplies requiring high input voltage tolerance
- Automotive electronics systems
- Battery-powered equipment utilizing Cuk or SEPIC architectures
- Telecommunications infrastructure power management
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm that the EUHE variant matches the required temperature grade and pinout for your PCB layout. Cross-reference the datasheet for any recent design changes or obsolescence notices before finalizing procurement plans.
Selection Notes
Select this component when designing circuits that require flexible topology options such as Cuk or SEPIC alongside standard boost conversion. Ensure the 36-QFN package fits within the available board space and thermal constraints. Verify that the 1.6V minimum input voltage aligns with the source supply characteristics.
Part Context
This part belongs to the LT3959 family of high-voltage DC/DC converters. It shares architectural similarities with other members like the LT3958 but offers distinct capabilities for Cuk and SEPIC applications. The series is characterized by high input voltage tolerance and integrated power switches.
FAQ
Does the LT3959 support negative output voltages?
Yes, the device supports inverting configurations to generate negative output voltages in addition to positive outputs.
What is the minimum operating input voltage?
The minimum operating input voltage is 1.6V.
