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Product Detailed Parameters
- Description：IC REG CTRLR BST/FWRD CONV 20DIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk,Tube
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Boost, Forward Converter
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：Up to 20V
- Frequency - Switching：-
- Duty Cycle (Max)：90%
- Synchronous Rectifier：No
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Phase Control, Soft Start
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-PDIP
- Grade：-
- Qualification：-
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Overview
The LT1339IN#PBF is a high-performance switching controller designed for boost and forward converter topologies. Manufactured by Analog Devices Inc., this component operates within a wide input voltage range to support diverse power management requirements. It features a fixed operating frequency of 500 kHz, enabling compact magnetic component selection. The device includes comprehensive protection mechanisms such as cycle-by-cycle current limiting and thermal shutdown. Packaged in a 20-pin PDIP format, it supports through-hole mounting for robust industrial applications.
Feature Summary
- Integrated control logic optimized for boost and forward converter architectures
- Built-in cycle-by-cycle current limiting for enhanced circuit protection
- Thermal shutdown capability to prevent damage during overheating events
- Fixed 500 kHz switching frequency for efficient passive component sizing
Applications
- Industrial power supply systems requiring isolated outputs
- Battery charging circuits utilizing boost topology
- Telecommunications equipment power modules
- General-purpose DC/DC conversion stages
Procurement Notes
Verify the specific ordering suffix against official Analog Devices documentation to ensure package type and temperature grade alignment. Confirm that the procurement channel provides valid traceability for the PDIP-20 package. Cross-reference the manufacturer part number with the latest datasheet revision to avoid discrepancies in pinout or electrical characteristics. Ensure compliance with RoHS directives if required by the end application.
Selection Notes
Select this controller when designing boost or forward converters requiring integrated protection features. Consider the 500 kHz fixed frequency for balancing efficiency and size constraints. Evaluate the thermal performance relative to the expected load conditions. Ensure the input voltage range matches the source application requirements. Verify that the through-hole packaging aligns with the PCB layout strategy.
Part Context
This component belongs to the LT1339 family of switching controllers from Analog Devices Inc. It serves as a core control element in non-isolated and isolated power conversion designs. The series is known for reliability in demanding environments. The IN#PBF designation indicates a specific package and lead-free configuration within the broader product line.
Replacement Considerations
Consult official Analog Devices substitution guides for compatible alternatives. Verify pin compatibility and electrical parameter equivalence before replacing. Generic substitutes may lack identical protection thresholds or frequency stability.
