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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA TO252-3
- 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：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1117DTX-5.0 is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It provides a fixed 5 V output with a maximum load current of 800 mA. The device operates within an input voltage range of 2.6 V to 15 V and features a typical dropout voltage of 1.2 V at full load. It includes internal thermal overload protection and current limiting. The component is housed in a TO-252-3 surface-mount package and supports operation from -40°C to +125°C.
Feature Summary
- Fixed 5 V output voltage with high accuracy
- Integrated thermal shutdown and current limiting for robust protection
- Low dropout voltage capability for efficient power management
- Surface-mount TO-252-3 packaging for compact board design
Applications
- Battery-powered systems requiring stable 5 V rails
- Post-regulation for switching power supplies
- General-purpose power supply circuits
Procurement Notes
Verify that the ordering suffix matches the required tape-and-reel quantity and RoHS compliance status. Confirm the manufacturer designation as Texas Instruments, which acquired National Semiconductor's analog business. Ensure the specific batch date code meets project requirements for long-term availability.
Selection Notes
Select this component when a fixed 5 V output is required with up to 800 mA load capacity. It is suitable for applications where input voltage exceeds output voltage by at least 1.2 V. Consider the TO-252-3 package for thermal performance and space constraints compared to through-hole alternatives.
Part Context
This part belongs to the LM1117 family of low-dropout regulators. The 'DTX' suffix typically indicates a tape-and-reel packaging format, while '5.0' denotes the fixed 5 V output voltage. The device was originally developed by National Semiconductor before being integrated into Texas Instruments' product line following their acquisition.
Replacement Considerations
Direct substitutes include LM1117DT-5.0/NOPB (tube packaging) and LM1117MPX-5.0/NOPB (SOT-223 package). Verify pin compatibility and thermal characteristics when substituting different package types.
