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Product Detailed Parameters
- Description：IC REG PUSH-PULL ADJ 1A 10DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 LT3999EDD#TRPBF is a high-efficiency, synchronous step-down DC/DC converter from Analog Devices Inc., designed for demanding industrial and automotive applications. It operates with an input voltage range of 2.7V to 60V, delivering up to 5A of output current. The device features a fixed 1MHz switching frequency and supports adjustable frequencies from 400kHz to 2.2MHz. Key electrical parameters include a quiescent current of 1.8mA during operation and 2µA in shutdown mode. It offers precise output voltage regulation with ±1% accuracy over line and load conditions.
Feature Summary
- Integrated synchronous rectification with low RDS(ON) switches for enhanced efficiency across wide load ranges.
- Constant-frequency current-mode control architecture ensuring stable operation under varying input and load conditions.
- Built-in protection mechanisms including cycle-by-cycle current limiting, thermal shutdown, and reverse battery protection.
Applications
- Industrial power supplies requiring robust input voltage ranges
- Automotive infotainment and sensor systems
- Point-of-load regulation in telecom infrastructure
Procurement Notes
Verify the specific suffix 'DD' indicates the DFN-16 package variant when confirming part availability. Ensure the '#TRPBF' designation confirms tape-and-reel packaging and lead-free compliance as per manufacturer standards. Cross-reference the full part number against official Analog Devices distribution channels to confirm authenticity and lot traceability before procurement.
Selection Notes
Select this component when a wide input voltage range up to 60V is required alongside high output current capabilities. Consider its fixed 1MHz frequency for balancing component size and efficiency. Evaluate thermal performance requirements given the DFN-16 package's thermal dissipation characteristics for your specific PCB layout constraints.
Part Context
This part belongs to the LT3999 family of high-voltage synchronous buck converters. It shares architectural similarities with other members but is distinguished by its specific pinout and thermal pad configuration in the DFN-16 package. The family targets applications needing reliable power conversion in harsh environments.
Replacement Considerations
Direct replacements must match the 60V input range, 5A output capability, and DFN-16 footprint. Verify compatibility with existing feedback resistor networks and compensation components. Consult Analog Devices documentation for any updated revisions or recommended alternatives within the same product line.
