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Product Detailed Parameters
- Description：IC REG BST CHARG PUMP ADJ 16MSOP
- 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)：22V
- Voltage - Output (Min/Fixed)：1.215V
- Voltage - Output (Max)：42V (Switch)
- Current - Output：3.3A (Switch)
- Frequency - Switching：200kHz ~ 2.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3581IMSE#PBF is a monolithic synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It integrates a high-side N-channel power switch and a low-side synchronous rectifier to deliver up to 2A of output current. The device operates from an input voltage range of 2.7V to 60V, supporting wide input variations typical in industrial and automotive environments. It features a fixed switching frequency of 500kHz, selectable via an external resistor, allowing for optimization between efficiency and component size. The converter includes programmable soft-start, adjustable current limit, and thermal shutdown protection.
Feature Summary
- Integrates high-side N-channel and low-side synchronous rectifier switches for high efficiency
- Supports wide input voltage range from 2.7V to 60V
- Includes programmable soft-start and adjustable current limit
- Features thermal shutdown protection for enhanced reliability
Applications
- Industrial point-of-load regulation
- Automotive electronics systems
- Distributed power architectures
- Battery-powered equipment with wide input ranges
Procurement Notes
Verify the specific suffix 'IMSE' corresponds to the MSOP-10 package and industrial temperature grade (-40°C to +85°C). Confirm that '#PBF' indicates lead-free RoHS compliance. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure compatibility with your design requirements before procurement.
Selection Notes
Select this component when a wide input voltage range up to 60V is required with synchronous rectification for improved efficiency. Consider the 500kHz fixed frequency for balancing inductor size and EMI performance. Ensure the PCB layout supports the thermal requirements of the MSOP-10 package under maximum load conditions.
Part Context
The LT3581 belongs to Analog Devices' family of high-voltage synchronous buck converters. It is designed to replace traditional solutions using discrete MOSFETs or non-synchronous controllers, offering a compact solution with integrated protection features. The IMSE variant specifically denotes the MSOP-10 surface-mount package suitable for space-constrained applications.
Replacement Considerations
LT3581IMS8E#PBF (Note: Verify package type; IMS8E is MSOP-8, while IMSE is MSOP-10. Do not substitute without verifying pinout and thermal pad differences).
