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Product Detailed Parameters
- Description：IC REG FLYBACK 5V 400MA 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up/Step-Down
- Output Configuration：Positive or Negative, Isolation Capable
- Topology：Flyback
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：2.8V
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：400mA
- Frequency - Switching：285kHz
- 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 LT1424CS8-5#PBF is a monolithic high-power switching regulator designed for isolated flyback topologies. It provides a fixed 5V output with a maximum current of 400 mA. The device operates from an input voltage range of 3 V to 20 V and features a switching frequency of 285 kHz. It includes a shutdown function and maintains a typical quiescent current of 7 mA. The component is housed in an 8-pin SOIC package and supports operating temperatures from 0°C to +125°C.
Feature Summary
- Designed specifically for isolated flyback converter applications
- Integrates a high-power switch within the monolithic package
- Includes a dedicated shutdown control pin for power management
Applications
- Isolated DC-DC power supply designs
- Industrial control systems requiring galvanic isolation
- Telecommunications equipment power stages
Procurement Notes
Verify the specific suffix #PBF confirms lead-free compliance and RoHS status against the latest manufacturer documentation. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the 285 kHz switching frequency aligns with your electromagnetic interference constraints and transformer design specifications before finalizing procurement.
Selection Notes
Select this component when a compact, integrated solution for isolated flyback conversion is required. It is suitable for applications needing a fixed 5V output up to 400 mA from a 3 V to 20 V input range. Consider the 285 kHz frequency for balancing component size and efficiency. Verify that the thermal performance in the SOIC-8 package meets the system's heat dissipation needs at the expected load conditions.
Part Context
This part belongs to the LT1424 series of switching regulators from Analog Devices. It is categorized under Switching Voltage Regulators within the PMIC family. The device integrates the power switch and control logic to simplify the design of isolated power supplies compared to discrete solutions.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical parameters carefully if considering non-series replacements.
