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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 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)：5V
- Voltage - Input (Max)：25V
- Voltage - Output (Min/Fixed)：1.21V
- Voltage - Output (Max)：23.5V
- Current - Output：1.5A
- Frequency - Switching：200kHz
- 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 LT1576IS8#PBF is a high-efficiency step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 5 V to 25 V and provides a fixed output voltage of 5 V at a maximum output current of 1.5 A. The device integrates a power switch and operates at a fixed switching frequency of 200 kHz. It features a shutdown mode with low quiescent current of 1.16 mA. The component is housed in an SOIC-8 surface-mount package and supports an operating temperature range from -40 °C to +125 °C.
Feature Summary
- Integrates a high-current power switch for efficient buck conversion
- Includes a dedicated shutdown pin for power management control
- Fixed 200 kHz switching frequency enables compact external component sizing
Applications
- Battery-powered portable equipment requiring regulated 5 V supply
- General-purpose 5 V bus distribution systems
- Post-regulation stages for higher voltage DC sources
Procurement Notes
Verify the specific suffix #PBF indicates lead-free and RoHS compliance status according to the manufacturer's latest documentation. Confirm that the SOIC-8 package dimensions match the target PCB footprint requirements. Ensure the fixed 5 V output variant aligns with the system design needs, as other voltage options may exist within the series.
Selection Notes
Select this component when a fixed 5 V output is required from an input source between 5 V and 25 V. The 1.5 A current capability suits moderate load applications. Consider the 200 kHz frequency for balancing efficiency and passive component size. Verify thermal performance under maximum load conditions given the SOIC-8 package constraints.
Part Context
This part belongs to the LT1576 family of switching regulators designed for cost-sensitive and space-constrained applications. It offers a simplified solution compared to discrete designs by integrating the controller and power switch. The IS8 designation specifies the industrial temperature grade and the SOIC-8 package type.
Replacement Considerations
Consult official Analog Devices documentation for verified cross-reference part numbers. Substitutions must match the SOIC-8 package, 1.5 A current rating, and 5 V fixed output specification.
