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Product Detailed Parameters
- Description：IC REG BUCK ADJ 550MA 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)：7.4V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：51V
- Current - Output：550mA (Switch)
- Frequency - Switching：100kHz
- 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 LT1676CS8#PBF is a high-efficiency buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 7.4V to 60V and provides a single adjustable output from 1.24V to 51V. The device delivers up to 550mA of switch current at a fixed switching frequency of 100kHz. Packaged in an 8-SOIC (3.90mm wide) surface-mount format, it supports operation temperatures from 0°C to 125°C junction temperature.
Feature Summary
- Buck topology designed for high efficiency across wide input ranges
- Adjustable output voltage capability starting from 1.24V
- Integrated shutdown functionality for power management
- Robust thermal performance suitable for industrial environments
Applications
- Automotive DC/DC conversion systems
- Telecommunications 48V step-down power supplies
- IEEE1394 (FireWire) bus power regulation
- General-purpose high-voltage buck converter designs
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status and specific package markings against official datasheets. Check for product change notifications regarding manufacturing updates. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.
Selection Notes
Select this component when designing systems requiring high input voltages up to 60V with moderate output currents around 550mA. The 100kHz switching frequency offers a balance between component size and efficiency. Consider the 8-SOIC package constraints for PCB layout and thermal dissipation needs compared to higher current alternatives.
Part Context
This part belongs to the LT1676 series of high-voltage switching regulators. It serves as a compact solution for stepping down higher voltage rails to lower regulated levels. The CS8 suffix indicates the specific SOIC-8 package variant with lead-free plating, distinguishing it from other package options within the same functional family.
Replacement Considerations
Direct substitutes include other parts within the LT1676 family sharing identical electrical specifications and pinouts. Verify compatibility with existing feedback networks and inductor selections before swapping. Consult manufacturer documentation for any pin-compatible upgrades offering improved efficiency or current capacity.
