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Product Detailed Parameters
- Description：IC REG CTRLR FLYBACK 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive or Negative, Isolation Capable
- Topology：Flyback
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.1V ~ 20V
- Frequency - Switching：90kHz ~ 115kHz
- Duty Cycle (Max)：90%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Soft Start
- Operating Temperature：0°C ~ 100°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The LT1737CS#TRPBF is a monolithic switching regulator controller designed for high-power isolated flyback topologies. It operates with an external MOSFET and supports a maximum switching frequency of 250 kHz. The device features a single output configuration housed in a 16-pin SOIC package. It functions within an operating temperature range of 0°C to 70°C, with a junction temperature limit of 100°C. The controller accepts input voltages up to 22 V and is capable of delivering typical output power of 25 W.
Feature Summary
- Monolithic design specifically engineered for high-power isolated flyback applications
- Drives the gate of an external MOSFET for efficient power conversion
- Supports switching frequencies up to 250 kHz for compact magnetic component sizing
Applications
- High-power isolated DC-DC converters
- Flyback topology power supplies
- AC-DC controllers requiring isolation
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm that the CS variant corresponds to the commercial temperature range (0°C to 70°C) rather than the extended industrial range. Ensure the ordering part number matches the exact package style required for the PCB footprint. Cross-reference the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications before finalizing procurement orders.
Selection Notes
Select this component when designing isolated flyback converters requiring high power handling capabilities. The fixed frequency operation simplifies filter design compared to variable frequency alternatives. Consider the 22 V input limit when determining suitability for specific voltage rails. The external MOSFET drive capability allows for flexibility in selecting power switches based on current requirements. Evaluate thermal management needs given the 100°C junction temperature constraint.
Part Context
The LT1737 series belongs to Analog Devices' portfolio of switching regulators tailored for isolated applications. This specific model focuses on flyback topologies, distinguishing it from other controllers used in buck or boost configurations. The CS designation identifies the commercial grade temperature rating. The TRPBF suffix denotes the specific tape and reel packaging format provided by the manufacturer.
Replacement Considerations
LT1737CS#PBF: Identical functional specifications but differs in tube packaging instead of tape and reel.
FAQ
What is the maximum switching frequency supported by the LT1737CS#TRPBF?
The device supports a maximum switching frequency of 250 kHz.
Does the LT1737CS#TRPBF include an internal power switch?
No, it is a controller that drives the gate of an external MOSFET.
