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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 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 @ 5A
- Current - Output：5A
- 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
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
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Overview
The LM1084IT-3.3/NOPB is a Texas Instruments low-dropout positive linear regulator providing a fixed 3.3 V output with a maximum continuous current of 5 A. It operates within an input voltage range of 2.6 V to 27 V and supports a junction temperature range from -40 °C to +125 °C. The device features a typical power supply rejection ratio (PSRR) of 75 dB, a quiescent current of 5 mA, and a maximum dropout voltage of 1.5 V at full load. It utilizes a TO-220-3 through-hole package.
Feature Summary
- Integrated thermal shutdown and current limiting protection mechanisms
- Low dropout voltage capability for efficient power conversion
- High ripple rejection performance in noisy environments
Applications
- Post-regulation stage for switching DC/DC converters
- Battery charger circuit implementations
- Offline switcher power supplies
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer documentation. Ensure the 'IT' designation matches the required industrial temperature grade (-40°C to +125°C). Confirm the 'TO-220-3' package type aligns with the target PCB footprint and thermal management requirements before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3 V rail is required with high current capacity up to 5 A. It is suitable for applications needing robust thermal protection and low noise. Consider the TO-220-3 package for through-hole mounting if surface mount options are not feasible. Evaluate thermal dissipation needs given the 30 W power dissipation rating under appropriate heatsinking conditions.
Part Context
This part belongs to the LM1084 family of 5 A low-dropout positive regulators manufactured by Texas Instruments. The series includes adjustable versions and other fixed voltage outputs such as 5.0 V. The LM1084IT-3.3/NOPB specifically denotes the fixed 3.3 V variant in a TO-220-3 package with industrial temperature specifications and lead-free construction.
Replacement Considerations
LM1084IS-3.3/NOPB: Surface mount D2PAK equivalent with identical electrical characteristics.
FAQ
What is the maximum input voltage for the LM1084IT-3.3/NOPB?
The maximum input voltage is 27 V.
Does the LM1084IT-3.3/NOPB include protection features?
Yes, it includes internal current limiting and thermal shutdown protection.
