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Product Detailed Parameters
- Description：IC REG BUCK 3.3V 4.5A DDPAK-7
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：4V
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- 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-3.3#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc., housed in an 8-pin D2PAK package with a thermal tab. It provides a fixed 3.3V output at up to 4.5A. The device operates from a 4V to 15V input range with a 500kHz switching frequency. It integrates a 4.5A power switch, oscillator, and control logic for efficient DC-DC conversion.
Feature Summary
- Synchronous rectification architecture for high efficiency
- Integrated 4.5A power switch eliminates external components
- Fixed 3.3V output voltage option
- Optimized for lower input voltage applications
Applications
- Point-of-load regulation
- Battery-powered systems
- Distributed power architectures
Procurement Notes
Verify the exact suffix against official Analog Devices documentation to confirm pinout and thermal specifications. Confirm RoHS compliance status via the manufacturer's current datasheet. Ensure the supplier source is authorized to guarantee component authenticity and traceability.
Selection Notes
Select this part when a fixed 3.3V output is required within a 4V to 15V input window. The integrated synchronous design suits space-constrained PCB layouts. Evaluate thermal performance requirements due to the high 4.5A current capability in the D2PAK package.
Part Context
This component belongs to the LT1506 family of monolithic buck mode switching regulators. It is functionally identical to the LT1374 but optimized for lower input voltages. The series includes various output voltage options and packaging variants for different power management needs.
Replacement Considerations
LT1374 is a functional equivalent with a higher input voltage range. Verify compatibility regarding input voltage limits and thermal dissipation characteristics before substitution.
