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Product Detailed Parameters
- Description：IC REG PUSH-PULL ADJ 1A 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Push-Pull
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.7V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：1A
- Frequency - Switching：50kHz ~ 1MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-WFDFN Exposed Pad
- Supplier Device Package：10-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LT3999IDD#PBF is a push-pull DC/DC driver IC manufactured by Analog Devices Inc. It operates with an input voltage range of 2.7V to 36V and supports adjustable output configurations for positive or isolated supplies. The device features a switching frequency range from 50kHz to 1MHz and delivers up to 1A output current. It is housed in a 10-MSOP package with an exposed pad and functions within a junction temperature range of -40°C to 150°C.
Feature Summary
- Push-pull topology designed for driving transformer-based converters
- Supports both positive and isolated output configurations
- Adjustable switching frequency for optimized design flexibility
Applications
- Flyback converter designs
- Forward converter architectures
- Isolated power supply systems
Procurement Notes
Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or tape-and-reel options that do not alter electrical function. Confirm RoHS compliance status through manufacturer declarations. Ensure the selected package matches the intended PCB footprint requirements for thermal management.
Selection Notes
Select this component when a push-pull topology is required for isolated or non-isolated applications. Consider the 36V maximum input limit and 1A drive capability. Evaluate the need for adjustable frequency operation versus fixed-frequency alternatives. Verify compatibility with external transformer specifications and switch ratings.
Part Context
This part belongs to the LT3999 family of high-performance DC/DC drivers. It is distinct from synchronous buck regulators like the LT3973 or LT3991, which utilize different topologies such as step-down conversion without transformers. The LT3999 specifically targets applications requiring push-pull drive signals for transformer-coupled designs.
FAQ
Does the LT3999 support synchronous rectification?
No, the LT3999 is a driver IC for push-pull converters and does not include integrated synchronous rectification.
What is the maximum input voltage for this device?
The maximum input voltage specified for the LT3999 is 36V.
