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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 3A 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 @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
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Overview
The LM1085IT-3.3/NOPB is a positive fixed-output low-dropout linear regulator manufactured by Texas Instruments. It provides a stable 3.3V output with a maximum current capacity of 3A. The device operates within an input voltage range of 2.6V to 27V and features a typical dropout voltage of 1.3V at full load. It includes internal thermal overload and short-circuit current limiting protection. The component is housed in a TO-220-3 package, suitable for through-hole mounting, and supports junction temperatures up to 125°C.
Feature Summary
- Provides a fixed 3.3V regulated output voltage
- Supports continuous output currents up to 3A
- Integrates thermal overload and short-circuit protection circuits
Applications
- General-purpose power supply regulation
- Battery-powered equipment requiring stable voltage rails
- Post-regulation for switching power supplies
Procurement Notes
Verify the specific suffix 'IT' confirms the industrial temperature grade and TO-220-3 through-hole package configuration. Ensure the 'NOPB' designation indicates lead-free and RoHS compliance status as per manufacturer specifications. Confirm availability and lifecycle status directly with authorized distributors or Texas Instruments before finalizing procurement plans.
Selection Notes
Select this component when a robust 3A linear regulator is required for applications needing high thermal performance and through-hole mounting. It is suitable for designs where input voltages exceed 3.3V but remain below 27V. Consider the thermal dissipation requirements carefully due to the linear regulation method and potential heat generation at higher load currents.
Part Context
This part belongs to the LM1085 family of adjustable and fixed positive regulators known for their high current capability and ease of use. The LM1085 series is widely used in various electronic systems requiring reliable voltage regulation. The IT variant specifically denotes the industrial temperature range and physical package type within this product line.
Replacement Considerations
LM1085IS-3.3/NOPB (Surface Mount Variant)
FAQ
What is the maximum input voltage for the LM1085IT-3.3/NOPB?
The maximum input voltage is 27V.
Does the LM1085IT-3.3/NOPB include protection features?
Yes, it includes internal thermal overload and short-circuit current limiting protection.
