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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4.5A 8SO
- 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)：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：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
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Overview
The LT1506CS8#PBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc. It operates with a fixed 500 kHz switching frequency and integrates a 4.5 A power switch. The device supports an input voltage range of 4 V to 15 V, making it suitable for lower input voltage applications compared to the LT1374. It features a 3.3 V output capability and includes internal oscillator, control, and logic circuitry within an 8-pin SOIC package.
Feature Summary
- Integrates a high-current 4.5 A power switch for efficient step-down conversion
- Optimized for lower input voltage ranges compared to legacy counterparts
- Includes complete oscillator, control, and logic circuitry on a single die
Applications
- 5V to 3.3V step-down converter circuits
- Systems requiring operation between 4V and 15V input
- Applications functionally identical to LT1374 but with lower input requirements
Procurement Notes
Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the presence of the #PBF suffix indicating lead-free compliance. Check current availability status as supply constraints may affect immediate procurement. Ensure storage conditions align with manufacturer specifications to maintain device integrity prior to assembly.
Selection Notes
Select this component when a 4.5 A buck regulator is required with an input voltage range starting at 4 V. It serves as a direct functional replacement for the LT1374 in designs where the input voltage does not exceed 15 V. Consider the fixed 500 kHz frequency for inductor sizing and EMI management. Verify that the 8-pin SOIC package fits the target PCB layout constraints.
Part Context
This part belongs to the LT1506 family of switching regulators from Analog Devices (formerly Linear Technology). It is designed as a cost-effective solution for medium-current DC-DC conversion. The device shares architectural similarities with the LT1374 but is specifically tuned for improved performance in lower input voltage scenarios, bridging the gap between standard and wide-input regulators.
Replacement Considerations
The LT1374 is a confirmed functional substitute with similar architecture but higher minimum input voltage requirements. The LT1959 offers comparable 4.5 A performance but may differ in specific pinout or thermal characteristics. Verify compatibility before swapping.
