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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：29V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：15V
- Voltage Dropout (Max)：1.5V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：10 mA
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°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 LM1086CSX-ADJ/NOPB is a positive adjustable low-dropout linear voltage regulator manufactured by Texas Instruments. It provides an output current of up to 1.5 A with a maximum input voltage of 30 V and a minimum operating voltage of 2.6 V. The device features a typical dropout voltage of 1.3 V at full load and maintains a reference voltage of 1.262 V. It operates within a temperature range of -40 °C to +125 °C and utilizes a D2PAK (TO-263) surface-mount package.
Feature Summary
- Adjustable output voltage capability via external resistor network
- Low dropout performance for efficient power regulation
- Integrated thermal shutdown and safe operating area protection
Applications
- Point-of-load regulation in embedded systems
- Battery-powered equipment requiring stable voltage rails
- General-purpose power supply circuits
Procurement Notes
Verify the specific suffix 'CSX' indicates the TO-263 surface-mount package variant distinct from through-hole versions. Confirm the 'NOPB' designation ensures lead-free compliance and RoHS adherence as per manufacturer specifications. Cross-reference the exact part number against official distributor catalogs to ensure availability and correct component revision.
Selection Notes
Select this component when a 1.5 A adjustable LDO is required in a compact surface-mount form factor. Ensure the input voltage remains within the 30 V absolute maximum rating while maintaining sufficient headroom above the desired output voltage to prevent dropout. Verify that the thermal dissipation requirements are met given the TO-263 package characteristics and ambient operating conditions.
Part Context
This device belongs to the LM1086 family of 1.5 A low-dropout regulators, which also includes fixed-output variants such as the LM1086CSX-3.3/NOPB. The family is designed for applications needing high efficiency and minimal heat generation compared to standard linear regulators. The adjustable version offers flexibility for custom voltage levels not covered by fixed options.
Replacement Considerations
Direct substitutes include other LM1086 series parts with compatible packages and electrical ratings, such as the LM1086ISX-ADJ/NOPB for industrial temperature ranges or different packaging options like the LM1086CT-ADJ/NOPB for through-hole mounting.
