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Product Detailed Parameters
- Description：IC REG CTRLR FLYBACK 16SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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#PBF is a monolithic switching regulator controller designed for high-power isolated flyback topologies. It operates within a supply voltage range of 4.1V to 20V and supports switching frequencies between 90kHz and 115kHz. The device features a maximum duty cycle of 90% and utilizes a 16-lead SOIC package. It functions as a single-output DC/DC controller without an internal switch or synchronous rectifier, suitable for applications requiring robust isolation capabilities.
Feature Summary
- Designed specifically for high-power isolated flyback converter topologies
- Provides gate drive control for external MOSFETs in power conversion circuits
- Supports flexible switching frequency operation within the specified range
Applications
- Isolated AC-DC power supplies
- High-power flyback converter designs
- Industrial power management systems
Procurement Notes
Verify the specific suffix (PBF) indicates lead-free packaging compliant with RoHS standards. Confirm the package type matches the required 16-SOIC footprint. Ensure the operating temperature range aligns with system requirements. Check availability status as distribution may vary by region. Validate that the component meets all electrical specifications for the intended load conditions.
Selection Notes
Select this controller when designing isolated flyback converters requiring precise duty cycle control. It is suitable for applications needing a wide input supply range up to 20V. Consider the external MOSFET drive capability for power handling needs. Evaluate the fixed frequency operation against system noise constraints. Ensure the non-synchronous design fits the efficiency and cost targets.
Part Context
This component belongs to Analog Devices' family of switching regulators. It serves as a dedicated controller for flyback architectures, distinct from integrated converters. The part number denotes the commercial grade variant in a surface-mount package. It complements other power management solutions by providing specialized control logic for isolated designs.
Replacement Considerations
Substitutes include LT1737CS#TRPBF for tape-and-reel packaging or LT1737CS#TR for non-RoHS reel options. Verify pin compatibility and electrical parameters before replacement. Ensure thermal performance remains adequate for the new packaging configuration.
