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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA TO220-3
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.2V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：10 mA
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- 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 LM1117T-5.0 is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, which acquired National Semiconductor. It provides a regulated 5V output with a maximum load current of 800mA. The device operates within an input voltage range of 2.6V to 15V and features a typical dropout voltage of 1.2V at full load. It includes internal thermal shutdown and current limiting protection. The component is housed in a TO-252 (DPAK) surface-mount package and supports operation temperatures from -40°C to +125°C.
Feature Summary
- Provides a fixed 5V output with high accuracy for stable power supply applications
- Features low dropout voltage performance suitable for efficient voltage conversion
- Includes built-in thermal shutdown and current limiting for circuit protection
Applications
- Battery-powered systems requiring efficient voltage regulation
- Post-regulation for switching power supplies
- On-card regulation for distributed power architectures
Procurement Notes
Verify the manufacturer designation as Texas Instruments due to the acquisition of National Semiconductor. Confirm the specific suffix indicates the TO-252 package and RoHS compliance. Ensure the fixed 5V output variant matches the design requirement. Check for moisture sensitivity levels if lead-free processing is required.
Selection Notes
Select this component when a fixed 5V rail is needed with up to 800mA capacity. Ensure the input voltage remains below the 15V maximum limit. Verify that the thermal dissipation requirements are met given the TO-252 package size. Consider the need for output capacitance to maintain stability during transient loads.
Part Context
This part belongs to the LM1117 family of low-dropout regulators known for replacing traditional three-terminal adjustable regulators like the LM317. The family offers improved efficiency and lower dropout voltages. The 'T' suffix typically denotes the TO-252 surface-mount package configuration used in compact designs.
Replacement Considerations
Direct replacements include LM1117DT-5.0/NOPB and LM1117MPX-5.0/NOPB. These alternatives offer identical electrical specifications but may differ in package type or manufacturing origin. Verify pin compatibility before substitution.
