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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 is a 1.5A adjustable output linear regulator from Texas Instruments, housed in a D2PAK (TO-263) surface-mount package. It operates with an input voltage range up to 30V and provides regulated outputs between 1.25V and 27V. The device features a typical dropout voltage of 1.3V at full load and includes internal thermal overload and current limit protection. It supports operation across industrial temperature ranges, ensuring stable performance for power supply applications requiring efficient voltage regulation.
Feature Summary
- Adjustable output voltage configuration via external resistor network
- Integrated thermal shutdown and current limiting protection circuits
- Low dropout voltage characteristic for improved efficiency
- Surface-mount D2PAK package optimized for PCB space
Applications
- Point-of-load regulation in embedded systems
- Post-regulation for switching power supplies
- Battery-powered equipment requiring stable voltage rails
- General-purpose linear power supply designs
Procurement Notes
Verify the suffix NOPB indicates lead-free compliance and RoHS adherence. Confirm the CSX designation specifies the D2PAK-3 surface mount package variant. Ensure the ADJ suffix matches the requirement for adjustable output functionality rather than fixed voltage options. Cross-reference the manufacturer part number with official TI documentation to validate authenticity and revision status before procurement.
Selection Notes
Select this component when a high-current 1.5A LDO is required in a compact surface-mount form factor. The adjustable output allows flexibility for various voltage rails within the 1.25V to 27V range. Consider the thermal resistance of the D2PAK package for heat dissipation requirements. Verify that the input-output differential voltage remains within safe operating limits to prevent excessive power dissipation during operation.
Part Context
The LM1086 series comprises low-dropout positive regulators available in fixed and adjustable versions. The CSX variant specifically denotes the surface-mount D2PAK package option within the broader LM1086 family. This series is designed for applications needing reliable linear regulation with moderate current capabilities, serving as a common solution for general-purpose power management tasks in consumer and industrial electronics.
Replacement Considerations
Direct substitutes include other LM1086 variants such as LM1086CT-ADJ/NOPB or LM1086IS-ADJ/NOPB, provided the package type matches the design constraints. Verify pin compatibility and thermal characteristics when swapping between through-hole and surface-mount packages. Ensure the replacement maintains the same electrical specifications for current rating and dropout voltage.
