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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：-40°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 LT1506IS8#PBF is a monolithic 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, oscillator, and control logic, functioning at a fixed 500kHz switching frequency. Designed for lower input voltage applications compared to the LT1374, it offers high efficiency in a compact SOIC-8 package.
Feature Summary
- Integrates a 4.5A synchronous power switch for high-efficiency buck conversion
- Optimized for lower input voltage ranges compared to legacy counterparts
- Includes built-in oscillator, control circuitry, and logic for simplified design
Applications
- Point-of-load regulation for embedded systems
- Battery-powered equipment requiring efficient step-down conversion
- Industrial control systems with 5V or 12V input rails
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the IS8 designation matches the required industrial temperature grade and SOIC-8 footprint. Cross-reference the manufacturer's current lifecycle status to ensure availability for new designs.
Selection Notes
Select this component when a fixed 3.3V output is required from inputs between 4V and 15V. It is suitable for applications needing up to 4.5A continuous current without external pass transistors. Consider the 500kHz frequency for balancing component size and efficiency against EMI requirements.
Part Context
This part belongs to the LT1506 family of synchronous buck regulators. It is functionally similar to the LT1374 but optimized for lower input voltages (4V-15V vs 5.5V-25V). The IS8 variant specifies the industrial temperature range and surface-mount SOIC-8 package configuration.
Replacement Considerations
LT1506CR-SYNC: Pin-compatible alternative with SYNC pin capability. LT1506IR-3.3: Industrial grade version with identical electrical characteristics. LT1374: Legacy equivalent with higher input voltage range requirements.
