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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 5A TO252-3
- 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-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1084RS-ADJ is a low dropout positive voltage regulator manufactured by HTC, featuring a 5.0A output current capability and an adjustable output voltage range. It utilizes a TO-252-3L surface mount package with a tab connected to the output pin for thermal management. The device incorporates internal current limiting and thermal shutdown protection to ensure reliability under overload conditions. Key electrical specifications include a maximum dropout voltage of 1.5V at full load, a reference voltage of 1.25V, and a supply ripple rejection of 65dB at 120Hz.
Feature Summary
- Provides high continuous output current up to 5.0A with fast transient response capabilities.
- Features internal thermal limiting and current limiting circuits for robust overload protection.
- Delivers excellent line and load regulation characteristics suitable for precision power applications.
Applications
- Battery Charger
- Adjustable Power Supplies
- Constant Current Regulators
- Portable Instrumentation
- SMPS Post-Regulator
Procurement Notes
Verify that the component matches the specific HTC datasheet revision R1.5.1 dated September 2021. Confirm the package designation is strictly TO-252-3L as indicated in the ordering information table. Ensure the part number suffix corresponds to the reel and tape supply format listed for this active device variant.
Selection Notes
Select this component when a 5A LDO solution is required in a compact surface-mount form factor. The TO-252-3L package offers a balance between thermal dissipation and board space efficiency compared to larger through-hole options. Consider the 1.5V dropout specification against input-output differentials to ensure stable regulation under maximum load conditions.
Part Context
This device belongs to the LM1084 series of three-terminal positive voltage regulators designed for high-current applications. The series includes both fixed and adjustable versions available in TO-263-3L and TO-252-3L packages. The LM1084RS-ADJ specifically denotes the adjustable version housed in the smaller TO-252-3L footprint.
Replacement Considerations
LM1084R-ADJ (TO-263-3L package)
FAQ
Is a protection diode required between the input and output pins?
No, internal resistors limit internal current paths, making protection diodes unnecessary under normal operation or short-circuit conditions.
What capacitor values are required for stability?
Stability requires an output capacitor such as 150µF aluminum electrolytic or 22µF solid tantalum. If the adjustment terminal is bypassed, these values cover all operating cases.
