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Product Detailed Parameters
- Description：IC REG BUCK ADJ 550MA 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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#TRPBF is a high-efficiency buck switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 7.4V to 60V and provides a single adjustable positive output from 1.24V to 51V. The device delivers a switch current of 550mA at a fixed switching frequency of 100kHz. It features a shutdown function and operates within a junction temperature range of 0°C to 125°C. The component is housed in an 8-SOIC package (3.90mm wide) and is supplied in tape and reel packaging.
Feature Summary
- High efficiency buck topology designed for wide input voltage applications
- Integrated shutdown control for power management
- Fixed 100kHz switching frequency for consistent performance
- Adjustable output voltage capability via external resistors
Applications
- Automotive DC/DC conversion systems
- Telecommunications 48V step-down power supplies
- IEEE1394 bus powered devices requiring regulated voltage
Procurement Notes
Verify the specific suffix #TRPBF confirms tape and reel packaging, distinct from tube variants like #PBF. Confirm the 'C' grade indicates the commercial temperature range (0°C to 125°C). Ensure the datasheet matches the exact part number for pinout and electrical specifications before integration. Check for RoHS compliance status in the official documentation.
Selection Notes
Select this component when a non-synchronous buck converter is required for inputs up to 60V. The 550mA output current suits moderate load applications. Consider the 100kHz frequency for balancing component size and efficiency. Verify that the thermal performance in the 8-SOIC package meets the system's heat dissipation requirements under maximum load conditions.
Part Context
This part belongs to the LT1676 family of high-voltage, high-efficiency buck regulators. It shares core functionality with other LT1676 variants but differs in packaging and temperature rating. The CS8 designation specifies the commercial grade and SOIC-8 package form factor, distinguishing it from industrial or wider-package alternatives within the same product line.
Replacement Considerations
LT1676IS8#TRPBF offers identical electrical characteristics but supports an extended industrial temperature range (-40°C to 125°C). LT1676CS8#PBF provides the same commercial grade performance but in tube packaging instead of tape and reel.
