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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 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)：20V
- Current - Output：2A
- Frequency - Switching：200kHz ~ 2.4MHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
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Overview
The LT3480EDD#PBF is a micropower synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.6 V to 36 V and delivers up to 2 A of output current. The device features an adjustable switching frequency from 200 kHz to 2.4 MHz and maintains a quiescent current of 70 uA. Output voltage is adjustable from 790 mV to 20 V. It utilizes a DFN-10 package, supports operation temperatures from -40°C to +125°C, and includes shutdown functionality for power management.
Feature Summary
- Integrates a high-efficiency 0.25 ohm switch and boost Schottky diode within a monolithic buck topology.
- Employs current mode architecture to ensure rapid transient response and stable loop performance.
- Features low ripple Burst Mode operation to sustain high efficiency at light loads while minimizing output noise.
Applications
- Battery-powered portable equipment requiring extended runtime
- Industrial control systems with wide input voltage ranges
- Automotive electronics operating under varying supply conditions
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the DFN-10 footprint matches your PCB layout requirements. Cross-reference the datasheet revision to validate electrical characteristics against your design specifications.
Selection Notes
Select this component for designs requiring high input voltage tolerance up to 36 V with minimal standby power consumption. The adjustable frequency allows optimization for size versus efficiency trade-offs. Consider the thermal performance of the DFN-10 package for high-current applications. Verify that the required output voltage falls within the 790 mV to 20 V adjustable range.
Part Context
This part belongs to the LT3480 series of micropower switching regulators. It shares core architectural features with other variants in the family but differs in package type and pinout configuration. The EDD suffix specifically denotes the DFN-10 package variant, distinguishing it from MSOP or other housing options available within the same functional product line.
Replacement Considerations
LT3480IMSE#PBF offers identical electrical specifications in a 10-TFSOP/MSOP package. LT3480EDD#TRPBF provides the same functionality in tape-and-reel packaging for automated assembly. Verify pin compatibility and thermal dissipation requirements when substituting between these package variants.
FAQ
What is the maximum input voltage rating for the LT3480EDD#PBF?
The device accepts continuous input voltages up to 36 V, with a maximum absolute rating of 60 V.
Does the LT3480 support external synchronization?
No, the LT3480 does not support external clock synchronization; its frequency is set internally or via an external resistor.
What is the typical output ripple voltage in Burst Mode?
In typical applications, Burst Mode operation keeps the output ripple below 15 mV.
