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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：0°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 LM1086CT-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 30 V and supports through-hole mounting in a TO-220 package with three pins. The device functions reliably across a temperature range of -40 °C to +125 °C, featuring a maximum dropout voltage of 1.5 V at full load and a typical quiescent current of 5 mA.
Feature Summary
- Provides a fixed 3.3 V positive output for stable power supply applications
- Supports high current delivery up to 1.5 A with low dropout characteristics
- Includes integrated thermal overload and short-circuit protection mechanisms
Applications
- General-purpose power supply regulation
- Battery-powered equipment requiring efficient voltage conversion
- Post-regulation for switching power supplies
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS adherence as per manufacturer specifications. Ensure the 'CT' designation matches the required TO-220 through-hole package variant rather than surface-mount alternatives. Cross-reference the exact part number against official distributor catalogs to confirm availability status and authenticity before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3 V rail is required with significant current capacity. The TO-220 package facilitates effective heat dissipation for continuous 1.5 A operation. Consider the minimum input voltage requirement relative to the dropout voltage to ensure proper regulation under varying load conditions and input source fluctuations.
Part Context
This device belongs to the LM1086 family of 1.5 A low-dropout regulators from Texas Instruments. It serves as a robust solution for replacing older Zener-based or standard linear regulator designs in systems demanding higher efficiency and lower heat generation. The NOPB suffix indicates a non-plumbum (lead-free) version compliant with modern environmental standards.
Replacement Considerations
Direct functional substitutes include other LM1086 variants such as LM1086CSX-3.3/NOPB for surface-mount needs or LM1086IS-3.3/NOPB for industrial temperature ranges. Verify pin compatibility and thermal resistance requirements when transitioning between package types like TO-220 and D2PAK.
