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Product Detailed Parameters
- Description：IC REG BCK ADJ 2A/1A TRPL 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：3
- Voltage - Input (Min)：3.2V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：36V
- Current - Output：2A, 1A
- Frequency - Switching：270kHz ~ 2.1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-QFN (4x5)
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Overview
The LT3514EUFD#TRPBF is a triple step-down switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 3.2V to 36V and provides three adjustable positive outputs, each capable of delivering up to 2A. The device utilizes a buck topology with a switchable frequency ranging from 350kHz to 2.2MHz. It features a low quiescent current of 2.7mA and supports 100% duty cycle operation. The component is housed in a 28-lead QFN package with an exposed pad, designed for surface-mount installation.
Feature Summary
- Integrates three independent synchronous buck regulators within a single compact package
- Supports 100% duty cycle operation for minimal dropout voltage requirements
- Features adjustable switching frequency to optimize efficiency and filter size
- Includes shutdown functionality to minimize power consumption during standby
Applications
- Portable battery-powered equipment requiring multiple voltage rails
- Industrial control systems with distributed power architectures
- Automotive electronics operating on 12V or 24V nominal buses
- Embedded computing platforms needing efficient DC-DC conversion
Procurement Notes
Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing components. Confirm that the manufacturer part number matches exactly to ensure correct pinout and electrical characteristics. Check for recent Product Change Notifications regarding material or process updates. Ensure the supplier is an authorized distributor to guarantee authenticity and traceability of the integrated circuit.
Selection Notes
Select this component when a design requires three separate regulated outputs from a single high-voltage source. The wide input range accommodates various battery chemistries and unregulated supplies. Consider the thermal performance of the QFN package and ensure adequate PCB copper area for heat dissipation. Evaluate the required output current against the 2A limit per channel to prevent overload conditions.
Part Context
This part belongs to the LT3514 family of triple step-down regulators. It shares functional similarities with other multi-channel PMICs but distinguishes itself through its specific 36V input capability and high-current output stages. The EUFD variant specifically denotes the 28-lead QFN package configuration, differentiating it from TSSOP or other form factors available in the same product line.
Replacement Considerations
LT3514IFE#PBF offers similar triple buck functionality but uses a 24-TSSOP package instead of QFN. LT3514EUFD#PBF provides identical electrical specifications but comes in tube packaging rather than tape and reel. Verify pin compatibility and thermal requirements when substituting between these package variants.
