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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 5A TO263-3
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：15V
- 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-ADJ is a low dropout three-terminal positive voltage regulator manufactured by TAEJIN, offering a 5.0A output current capability. It features an adjustable output voltage set via an external resistor divider and guarantees a maximum dropout voltage of 1.5V at full load. The device includes internal thermal limiting and current limiting for overload protection. It operates within a junction temperature range of -40°C to 125°C and utilizes a TO-263-3L surface mount package.
Feature Summary
- Provides 5.0A continuous output current with fast transient response
- Features low dropout voltage of 1.5V at maximum load
- Includes internal thermal shutdown and current limiting protection
- Offers excellent line and load regulation performance
Applications
- Battery Charger
- Adjustable Power Supplies
- Constant Current Regulators
- Portable Instrumentation
- SMPS Post-Regulator
Procurement Notes
Verify the manufacturer designation as TAEJIN against the specific datasheet revision R1.5.1. Confirm the package type is TO-263-3L and that the part status is listed as Active. Ensure the ordering suffix matches the required reel and tape supply format for production integration.
Selection Notes
Select this component for applications requiring high current linear regulation with low dropout characteristics. Ensure adequate heat sinking is designed due to power dissipation at 5.0A loads. Verify input-to-output voltage differential remains within specified limits to maintain stability and prevent thermal shutdown during operation.
Part Context
This component belongs to the LM1084 series of low dropout regulators. It shares pin compatibility with traditional three-terminal adjustable regulators but provides improved reference tolerance and stability. The series supports both fixed and adjustable output versions in surface mount packages.
Replacement Considerations
LM1084RS-ADJ (TO-252-3L variant)
FAQ
What capacitor values are required for stability?
Stability requires an output capacitor of 150µF aluminum electrolytic or 22µF solid tantalum. If the adjustment terminal is bypassed, these values ensure proper operation.
Is a protection diode needed between the input and output?
Protection diodes are generally not needed under normal operation. However, a diode from output to input is recommended if high-value output capacitors (1,000µF to 5,000µF) are used with a crowbar circuit at the input.
