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Product Detailed Parameters
- Description：IC REG BOOST ADJ 1.5A 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.45V
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：2.45V
- Voltage - Output (Max)：34V
- Current - Output：1.5A (Switch)
- Frequency - Switching：1.2MHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
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Overview
The LT1946EMS8#TRPBF is a synchronous boost and SEPIC DC/DC converter IC manufactured by Analog Devices. It operates with an input voltage range of 2.45V to 16V and provides a single adjustable output up to 35V. The device integrates a 1.5A switch and functions at a fixed switching frequency of 2.7MHz. It is housed in an 8-lead MSOP package with an exposed pad for thermal management.
Feature Summary
- Integrates a high-current 1.5A power switch for efficient power conversion
- Supports both boost and SEPIC topologies for flexible input-output configurations
- Features a fixed 2.7MHz switching frequency to minimize external component size
Applications
- Battery-powered portable equipment requiring step-up conversion
- Systems utilizing multiple battery cells where input voltage may drop below output requirements
- Industrial control modules needing stable regulated voltage from varying sources
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the manufacturer part number matches exactly, as Analog Devices uses precise suffixes for package and temperature variations. Check current availability status as supply constraints may affect immediate fulfillment. Ensure compatibility with your PCB footprint for the 8-MSOP-EP package.
Selection Notes
Select this component when a compact solution is needed for boosting low input voltages up to higher levels. The integrated 1.5A switch suits moderate current applications without external passives. Consider the 2.7MHz frequency for smaller inductors compared to lower-frequency alternatives. Verify that the required output voltage falls within the adjustable range supported by the feedback network.
Part Context
This part belongs to the LT1946 family of synchronous boost converters. It shares architectural similarities with other members like the LT1946A but maintains distinct electrical characteristics. The MSOP-EP package is common across several Analog Devices power management ICs designed for space-constrained designs.
Replacement Considerations
LT1946EMS8E#PBF is a tube-packaged version of the same functional device. Other LT1946 variants may offer different current ratings or frequencies. Direct substitution requires verifying pinout compatibility and ensuring the replacement supports the required boost or SEPIC topology.
