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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：27V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：10 mA
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- 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 LM1086ISX-3.3/NOPB is a fixed positive low-dropout linear voltage regulator manufactured by Texas Instruments. It provides a stable 3.3 V output with a maximum current capacity of 1.5 A. The device operates within an input voltage range of 2.6 V to 27 V and features a typical dropout voltage of 1.3 V at full load. It is housed in a surface-mount D2PAK-3 (TO-263-3) package, suitable for thermal-efficient designs. The component supports an operating temperature range from -40°C to +125°C and includes internal safety features such as overcurrent protection and thermal shutdown.
Feature Summary
- Fixed 3.3 V output eliminates external resistor networks for standard voltage rails
- Low dropout characteristic enables efficient regulation with minimal input-output differential
- Integrated thermal and current limiting protects the device under fault conditions
Applications
- Point-of-load regulation for digital logic circuits
- Power supply stages for embedded microcontroller systems
- Biasing applications for analog signal processing components
Procurement Notes
Verify the suffix NOPB indicates lead-free composition and RoHS compliance per manufacturer specifications. Confirm the ISX designation corresponds to the TO-263 surface-mount package variant. Ensure the specific revision matches design requirements for thermal performance and electrical tolerances before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3 V rail is required with up to 1.5 A load capability. The TO-263 package offers superior heat dissipation compared to smaller SOT packages. Consider the minimum input voltage requirement relative to the source supply to ensure adequate headroom for regulation across the entire operating temperature range.
Part Context
This part belongs to the LM1086 family of adjustable and fixed LDO regulators designed for general-purpose power management. The series is characterized by high ripple rejection and fast transient response. The ISX variant specifically denotes the surface-mount construction intended for automated assembly processes in compact electronic assemblies.
Replacement Considerations
LM1086IS-3.3/NOPB serves as a direct pin-compatible alternative within the same product line.
