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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 5A TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：29V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：27.5V
- Voltage Dropout (Max)：1.5V @ 5A
- Current - Output：5A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263 (DDPAK-3)
- Grade：-
- Qualification：-
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Overview
The LM1084IS-ADJ/NOPB is a positive adjustable low-dropout linear regulator manufactured by Texas Instruments. It delivers up to 5 A output current with an adjustable voltage range from 1.25 V to 27.5 V. The device operates within an input voltage range of 2.6 V to 29 V and features a maximum dropout voltage of 1.5 V at full load. It includes integrated thermal overload and current limit protection, ensuring reliable operation across a junction temperature range of -40°C to +125°C.
Feature Summary
- Provides high-current regulation capability up to 5 A for demanding power applications.
- Features adjustable output voltage configuration allowing flexible system design.
- Incorporates internal thermal overload and short-circuit current limiting for robust protection.
Applications
- General-purpose power supply designs requiring adjustable voltage rails
- Post-regulation stages for switching power supplies
- Battery-powered systems needing efficient linear regulation
Procurement Notes
Verify the specific suffix 'NOPB' indicates lead-free/RoHS compliance as per manufacturer standards. Confirm the package variant matches the required PCB footprint, as the 'ISX' designation typically corresponds to surface-mount D2PAK/TO-263 packages. Ensure ordering documentation aligns with the exact part number to avoid confusion with fixed-voltage or through-hole variants within the same family.
Selection Notes
Select this component when an adjustable output voltage is required alongside high current capacity. Compare against fixed-output versions if the target voltage is standard. Consider the thermal performance in the TO-263 package relative to the expected power dissipation. Verify that the input voltage headroom meets the minimum dropout requirements for the chosen load conditions.
Part Context
This part belongs to the LM1084 series of positive LDO regulators from Texas Instruments. It shares core architecture with other members like the LM1084IS-5.0 but offers adjustable output flexibility. The series is designed for applications requiring stable regulation under heavy loads, distinguishing it from lower-current counterparts in the broader PMIC portfolio.
Replacement Considerations
Direct substitutes include LM1084IS-ADJ without the NOPB suffix for non-RoHS contexts, or LM1084ISX-ADJ/NOPB which denotes the tape-and-reel packaging variant instead of tube. Cross-reference with LM1084IT-ADJ for through-hole TO-220 compatibility if package changes are permissible.
