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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A TO220-3
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
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Overview
The LM1086IT-3.3/NOPB is a fixed positive low-dropout linear regulator manufactured by Texas Instruments, delivering a stable 3.3 V output at up to 1.5 A. It 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. The device is housed in a surface-mount TO-263 (D2PAK) package with thermal pad grounding. It supports an extended operating temperature range from -40°C to +125°C and includes internal protection against overcurrent and thermal overload.
Feature Summary
- Provides a fixed 3.3 V regulated output for power supply applications
- Supports continuous load currents up to 1.5 A with low dropout performance
- Integrates built-in thermal overload and current limit protection circuits
Applications
- Point-of-load regulation in embedded systems
- Power conditioning for microcontrollers and digital logic
- Battery-powered equipment requiring efficient voltage step-down
Procurement Notes
Verify the complete part number including suffixes such as NOPB to ensure lead-free compliance and specific packaging options. Confirm that the TO-263 package variant matches your PCB footprint requirements. Check manufacturer documentation for updated RoHS status and environmental compliance declarations before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3 V rail is required with moderate current capacity. Ensure the input voltage remains within the specified 27 V maximum limit. Consider the thermal resistance characteristics of the D2PAK package for adequate heat dissipation under high load conditions without external heatsinking.
Part Context
This regulator belongs to the LM1086 family of positive LDO devices designed for general-purpose power management. The IT-3.3/NOPB designation indicates a fixed 3.3 V output version in a surface-mount TO-263 package. It serves as a robust solution for converting higher unregulated voltages to stable 3.3 V rails in industrial and consumer electronics.
Replacement Considerations
Direct substitutes include LM1086IS-3.3/NOPB and LM1086CSX-3.3/NOPB. Verify pinout compatibility and thermal performance specifications when transitioning between different package variants within the same product family.
