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Product Detailed Parameters
- Description：IC REG CTRLR FLYBACK 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Flyback
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：5V ~ 100V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Soft Start
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width), 12 Leads
- Supplier Device Package：16-MSOP
- Grade：-
- Qualification：-
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Overview
The LT3748MPMS#PBF is a switching regulator controller designed for high-power isolated flyback topologies. It operates with an input voltage range of 5 V to 100 V and features a fixed switching frequency of 42 kHz. The device utilizes boundary mode control to optimize magnetic component size while maintaining load regulation. It includes an internally regulated 7 V supply to drive external N-channel MOSFETs, eliminating the need for auxiliary windings or opto-isolators. The unit supports adjustable output voltages and delivers up to 1.9 A output current. Operating temperatures range from -40°C to +125°C, with a typical quiescent current of 1.3 mA.
Feature Summary
- Primary-side sensing capability that detects isolated output voltage directly from the flyback waveform, removing the requirement for opto-isolators or third transformer windings.
- Boundary mode operation which enables compact magnetic solutions without compromising load regulation performance.
- Integrated 7 V regulated supply dedicated to driving low-side external N-channel power MOSFETs.
Applications
- High-power isolated DC-DC converters
- Flyback topology power supplies requiring primary-side regulation
- Systems utilizing input voltages up to 100 V
Procurement Notes
Verify the specific suffix MS#PBF against official Analog Devices documentation to confirm package type and temperature grade. Ensure the ordering code matches the required tube packaging format. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status before finalizing procurement orders.
Selection Notes
Select this component when designing isolated flyback converters that benefit from primary-side regulation to reduce bill of materials cost. The device is suitable for applications requiring input voltages between 5 V and 100 V. Consider the 16-MSOP package constraints and thermal requirements for high-power implementations exceeding several tens of watts.
Part Context
The LT3748 series comprises switching regulator controllers optimized for isolated flyback applications. The MPMS variant denotes a specific military-grade or enhanced specification within the broader LT3748 family, housed in a 16-lead MSOP package. This series emphasizes high-power capability and simplified design through integrated gate drive and primary-side feedback mechanisms.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. No public substitute part numbers are confirmed in the provided documentation.
