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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4.5A DDPAK-7
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4V
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：2.42V
- Voltage - Output (Max)：13.95V
- Current - Output：4.5A
- Frequency - Switching：500kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Supplier Device Package：DDPAK-7
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Overview
The LT1506IR-SYNC#TRPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 15V and provides a fixed 3.3V output at up to 4.5A. The device integrates a 4.5A power switch and functions at a fixed 500kHz switching frequency. Packaged in an 8-lead D2PAK (DDPAK) with a thermal tab, it includes internal oscillator, control, and logic circuitry for compact DC-DC conversion.
Feature Summary
- Synchronous rectification architecture for improved efficiency
- Integrated 4.5A power switch eliminates external component requirements
- Optimized for lower input voltage applications compared to non-synchronous counterparts
Applications
- 5V to 3.3V step-down converter circuits
- Point-of-load regulation for digital systems
- Battery-powered equipment requiring efficient voltage translation
Procurement Notes
Verify the specific suffix #TRPBF confirms lead-free tape-and-reel packaging. Confirm the IR designation indicates industrial temperature range operation. Ensure the SYNC variant is selected over standard versions if synchronous rectification is required for the design.
Selection Notes
Select this part when input voltages fall between 4V and 15V. The synchronous design offers better efficiency than the LT1374 at these lower voltages. Verify that the 4.5A current capability meets load requirements and that the D2PAK package fits the thermal constraints of the PCB layout.
Part Context
This component belongs to the LT1506 family of monolithic buck regulators. It is functionally similar to the LT1374 but optimized for lower input voltage ranges. The synchronous version improves performance over asynchronous designs by reducing conduction losses during the off-time phase of the switching cycle.
Replacement Considerations
LT1374 serves as a functional alternative but lacks synchronous rectification and supports higher input voltages. LT1959 is another 4.5A option within the portfolio. Verify pinout compatibility and thermal performance when substituting.
