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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A 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)：1.2V
- 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 (TJ)
- 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 LM1086CS-ADJ/NOPB is a positive adjustable low-dropout linear regulator manufactured by Texas Instruments. It provides an output current of up to 1.5 A with an input voltage range from 2.6 V to 27 V. The adjustable output voltage spans from 1.2 V to 15 V, determined by external resistors. It features a typical dropout voltage of 1.3 V at full load and operates within a temperature range of 0°C to +125°C. The device is housed in a surface-mount D2PAK (TO-263) package with three pins.
Feature Summary
- Provides stable positive voltage regulation with adjustable output capability via external feedback network
- Designed for low dropout operation to maintain efficiency under varying input-to-output voltage differentials
- Incorporates internal thermal overload and current limit protection mechanisms for enhanced reliability
Applications
- Point-of-load regulation in embedded systems requiring 1.5 A current capacity
- Pre-regulator stages for switching power supplies to reduce ripple and noise
- Battery-powered equipment utilizing linear regulation for low-noise performance
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest datasheet. Confirm the D2PAK (TO-263) package dimensions match your PCB footprint requirements. Ensure the input voltage does not exceed the maximum rating of 27 V to prevent device damage. Check for any specific ordering or marking variations that may affect compatibility with existing assembly processes.
Selection Notes
Select this component when an adjustable output voltage between 1.2 V and 15 V is required with high current capability. It is suitable for applications where the input voltage remains close to the desired output level, leveraging its low dropout characteristic. Consider the thermal resistance of the TO-263 package and implement adequate heatsinking if operating near the 1.5 A limit or in high ambient temperatures. Compare against fixed-output variants if the required voltage is standard.
Part Context
This part belongs to the LM1086 family of 1.5 A low-dropout regulators from Texas Instruments. The family includes both fixed and adjustable output versions across various packages such as TO-220 and SOT-223. The LM1086 series is widely used in general-purpose power supply designs due to its robustness and ease of use. The 'CS' designation indicates the surface-mount D2PAK package variant.
Replacement Considerations
Direct pin-compatible substitutes include other LM1086 variants with different packages or fixed outputs, provided electrical parameters align. Verify thermal performance and package compatibility before substituting with non-TI manufacturers. Cross-reference with LM1086IT-ADJ/NOPB for similar adjustable functionality but potentially different package or temperature ratings.
