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Product Detailed Parameters
- Description：IC REG CTLR BST/FWRD CONV 20SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：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：Surface Mount
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SO
- Grade：-
- Qualification：-
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Overview
The LT1339ISW#PBF is a high-power synchronous current-mode switching regulator controller manufactured by Analog Devices Inc. It is designed to drive dual N-channel MOSFETs, providing a single-IC solution for DC/DC applications. The device operates with a supply voltage range of 9V to 60V and supports an output duty cycle up to 90%. It features a fixed switching frequency of 150kHz and utilizes Burst mode operation for efficiency optimization. The component is housed in a 20-SOIC package.
Feature Summary
- High-power synchronous current-mode control architecture
- Integrated driver for dual N-channel MOSFETs
- Burst mode operation for improved light-load efficiency
Applications
- High power synchronous buck converters
- Industrial power supplies
- Telecommunications equipment
Procurement Notes
Verify the exact manufacturer part number against official Analog Devices documentation to ensure compatibility. Confirm that the 20-SOIC package dimensions match your PCB layout requirements. Check for RoHS compliance status if required by your manufacturing standards. Ensure the operating temperature range aligns with your system's environmental specifications before finalizing procurement.
Selection Notes
Select this controller for applications requiring high-power synchronous rectification with a wide input voltage range. The 150kHz frequency offers a balance between size and efficiency. Consider the Burst mode feature for systems needing optimized performance at low loads. Ensure the external MOSFETs selected can handle the drive capabilities and thermal requirements associated with this controller.
Part Context
This component belongs to the LT1339 family of high-power synchronous DC/DC controllers from Analog Devices. It is distinct from the LTC1338, which is an RS-232 transceiver. The LT1339 series focuses on power management solutions, specifically for driving external power switches in buck converter topologies.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may not match the specific current-mode control characteristics or Burst mode functionality.
