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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3.5A 10DFN
- 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 ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LT3680EDD#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It accepts input voltages up to 36V and provides an adjustable output voltage ranging from 0.79V to 30V with a maximum output current of 3.5A. The device features an adjustable switching frequency between 200kHz and 2.4MHz. It operates within a junction temperature range of -40°C to 125°C and utilizes a 10-WFDFN package with exposed pad.
Feature Summary
- Integrates a high-efficiency internal power switch and boost Schottky diode for compact design
- Employs current mode topology to ensure fast transient response and loop stability
- Features low ripple Burst Mode operation to maintain high efficiency at light loads
Applications
- Industrial point-of-load regulation
- Battery-powered equipment requiring low quiescent current
- General-purpose DC-DC conversion in space-constrained designs
Procurement Notes
Verify the specific suffix against official Analog Devices documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure ordering quantities align with manufacturer tube packaging specifications. Cross-reference datasheet revisions to validate parameter consistency.
Selection Notes
Select this component when input voltages reach 36V and high peak current capability is required. The adjustable frequency allows optimization for size versus efficiency trade-offs. Verify that the external component selection supports the desired switching frequency range. Ensure thermal management strategies accommodate the DFN package constraints.
Part Context
This part belongs to the LT3680 family of step-down regulators designed for high-voltage, high-current applications. It distinguishes itself through a very low quiescent current specification, enhancing battery life in portable systems. The family focuses on integrating power switches to reduce external component count.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Direct replacements must match input voltage limits, current capacity, and package dimensions. Verify functional compatibility regarding control loops and thermal performance before implementation.
