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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3.5A 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3.6V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.79V
- Voltage - Output (Max)：30V
- Current - Output：3.5A
- Frequency - Switching：230kHz ~ 2.45MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：10-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3680HMSE#PBF is a step-down switching regulator from Analog Devices Inc., housed in a 10-MSOP package with an exposed pad. It operates with an input voltage range of 3.6V to 36V and delivers up to 3.5A output current. The device features a fixed 2.4MHz switching frequency and ultra-low quiescent current of 75µA. Output voltage is adjustable from 0.79V to 30V, supporting single-output configurations. It functions within a junction temperature range of -40°C to 125°C.
Feature Summary
- Integrates a high-efficiency power switch and control logic for compact design
- Provides ultra-low quiescent current to minimize standby power consumption
- Features fixed-frequency operation to simplify external component selection
- Includes thermal regulation and cycle-by-cycle current limit protection
Applications
- Battery-powered portable equipment requiring efficient power conversion
- Industrial systems utilizing 24V or 48V bus architectures
- Automotive electronics operating within wide voltage ranges
- Distributed power supplies in communication infrastructure
Procurement Notes
Verify the complete part number including suffixes such as #PBF for lead-free compliance and package type. Confirm that the specific MSOP-10 variant matches the required thermal and electrical specifications. Check manufacturer documentation for any recent production changes or obsolescence notices before finalizing procurement decisions.
Selection Notes
Select this component when a fixed high-frequency buck converter is needed to reduce passive component size. The 2.4MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Ensure the application requires non-synchronous rectification, as this model uses an internal N-channel switch without a synchronous low-side FET.
Part Context
This part belongs to the LT3680 family of monolithic buck regulators designed for high efficiency and small footprint. It shares architectural similarities with other LT368x variants but differs in switching frequency and package options. The HMSE designation indicates a specific temperature grade and MSOP-10 package configuration suitable for space-constrained designs.
Replacement Considerations
LT3680IMSE#PBF offers identical electrical performance in an industrial temperature grade variant. LT3680EMSE#TRPBF provides the same functionality in tape-and-reel packaging for automated assembly. Verify thermal requirements and package compatibility when substituting between these variants.
