ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BOOST CUK ADJ 5A 36QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Cuk, Flyback, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.6V
- Voltage - Output (Max)：40V (Switch)
- Current - Output：5A (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)
- Grade：-
- Qualification：-
Download product information
Overview
The LT3957AIUHE is a wide input range, current mode DC/DC converter capable of generating positive or negative output voltages. It integrates an internal low-side N-channel power MOSFET rated for 40V at 5A, driven by a regulated 5.2V supply. The device supports boost, flyback, SEPIC, and inverting topologies with a fixed frequency architecture. Input voltage ranges from 3V to 40V, with a switching frequency of 1MHz. Quiescent current is 1.7mA, dropping to 1µA in shutdown. Operating temperature spans -40°C to +125°C.
Feature Summary
- Integrates a 40V, 5A internal low-side N-channel power MOSFET
- Configurable as boost, flyback, SEPIC, or inverting converter
- Fixed frequency current-mode architecture for stable operation
- Capable of generating either positive or negative output voltages
Applications
- Industrial control systems requiring isolated or non-isolated power conversion
- Automotive electronics utilizing wide input voltage ranges
- Telecommunications infrastructure power supplies
- Battery-powered equipment needing efficient step-up or inversion
Procurement Notes
Verify the specific suffix 'IUHE' against Analog Devices official documentation to confirm package type (QFN-36) and industrial temperature grade (-40°C to +125°C). Ensure compatibility with the DC1544A development kit if evaluation is required. Confirm RoHS compliance status through the manufacturer's material declaration documents prior to integration.
Selection Notes
Select this component when a single IC must support multiple converter topologies including boost, flyback, SEPIC, and inverting configurations. The integrated 5A switch eliminates external MOSFET selection complexity. Suitable for designs requiring wide input voltage tolerance up to 40V and high efficiency across varying load conditions without external driver circuitry.
Part Context
Part of the LT3957 family, which includes variants like LT3957EUHE#PBF. The AIUHE designation indicates industrial temperature rating and QFN-36 packaging. Related tools include the DC1544A evaluation board. The series provides versatile power management solutions for high-voltage applications.
Replacement Considerations
LT3958EUHE#TRPBF offers similar topology support but with different current ratings and input voltage ranges. Verify pinout compatibility and thermal performance differences before substitution. Consult Analog Devices cross-reference guides for confirmed equivalents.
