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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)：9.7V ~ 22V
- 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 LT1725CS#TRPBF is a monolithic switching regulator controller designed for isolated flyback topologies. It drives the gate of an external MOSFET to regulate positive or negative isolated outputs in step-up/step-down DC-DC converters. The device operates within a switching frequency range of 90 kHz to 115 kHz and supports a maximum duty cycle of 90%. It functions with a supply voltage between 9.7 V and 22 V, delivering up to 500 mA output current. The component is housed in a 16-SOIC package and operates at junction temperatures from 0°C to 100°C.
Feature Summary
- Designed specifically for general-purpose isolated flyback converter applications
- Provides control features including enable functionality and soft-start capability
- Drives external MOSFET gates for positive or negative isolated output configurations
Applications
- Isolated flyback power supplies
- Positive and negative output step-up/step-down DC-DC converters
- General purpose isolated flyback controllers
Procurement Notes
Verify that the specific suffix #TRPBF corresponds to tape and reel packaging rather than tube packaging when ordering. Confirm the manufacturer part number matches Analog Devices Inc. specifications exactly. Ensure the requested variant aligns with the required operating temperature range and package dimensions for your design integration.
Selection Notes
Select this controller for designs requiring a dedicated solution for isolated flyback topologies. It is suitable for applications needing both positive and negative isolated outputs. Consider the 16-SOIC package constraints and the 90 kHz to 115 kHz switching frequency range when designing the transformer and feedback loop components.
Part Context
This component belongs to the LT1725 series of switching regulators manufactured by Analog Devices Inc. It is categorized under PMIC - Power Management ICs, specifically as a DC DC Switching Controller. The series is engineered for robust performance in isolated power conversion scenarios.
Replacement Considerations
LT1725IS#TRPBF: Same functional specifications but rated for an extended industrial temperature range of -40°C to 125°C compared to the commercial range of the CS variant.
