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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 5A TO263-3
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 5A
- Current - Output：5A
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：10 mA
- PSRR：65dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263-3
- Grade：-
- Qualification：-
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Overview
The LM1084R-3.3 is a low dropout three-terminal positive voltage regulator manufactured by TAEJIN, providing a fixed 3.3V output with a maximum current capability of 5.0A. It utilizes a TO-263-3L surface mount package and operates within an input voltage range up to 15V. The device features a typical dropout voltage of 1.3V at full load and includes internal thermal limiting and current protection mechanisms.
Feature Summary
- Fixed 3.3V output voltage with 5.0A current capacity
- Low dropout voltage performance for efficient power regulation
- Integrated thermal shutdown and current limiting protection
- Surface mount construction in TO-263-3L package
Applications
- Battery charger circuits
- Adjustable and fixed power supplies
- Constant current regulators
- Portable instrumentation systems
- SMPS post-regulators
Procurement Notes
Verify the manufacturer designation as TAEJIN against the provided HTC datasheet documentation. Confirm that the TO-263-3L package variant matches the specific ordering code requirements for your assembly process. Ensure compliance with moisture sensitivity level 3 handling protocols during storage and soldering operations.
Selection Notes
Select this component when a stable 3.3V rail is required for loads drawing up to 5A. The TO-263-3L package facilitates effective heat dissipation through the tab connection. Verify that the input voltage differential remains sufficient to maintain regulation while accounting for thermal constraints under continuous operation conditions.
Part Context
This regulator belongs to the LM1084 series of low dropout linear voltage regulators. The series offers both adjustable and fixed output versions, designed for high-efficiency applications requiring significant current delivery. The fixed 3.3V variant simplifies design by eliminating external resistor networks typically needed for adjustable models.
Replacement Considerations
LM1084ISX-ADJ/NOPB
FAQ
What is the minimum load current requirement for stability?
The device requires a minimum load current of approximately 7mA to maintain proper regulation and stability.
Does the LM1084R-3.3 require external protection diodes?
Internal resistors limit current paths, generally eliminating the need for protection diodes between the adjustment pin and output or from output to input under normal operating conditions.
