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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA SOT-223-4
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-261-4, TO-261AA
- Supplier Device Package：SOT-223-4
- Grade：-
- Qualification：-
Download product information
Overview
The LM1117IMPX-5.0/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 5 V output with a maximum load current of 800 mA. It operates within an input voltage range up to 15 V and features a typical dropout voltage of 1.2 V at full load. The device incorporates internal current limiting and thermal shutdown protection mechanisms. It utilizes a Zener-trimmed bandgap reference to ensure output voltage accuracy within ±1%. The component is housed in a surface-mount SOT-223 package.
Feature Summary
- Integrated current limiting and thermal shutdown for robust operation under fault conditions
- Zener-trimmed bandgap reference ensures precise output voltage regulation
- Low dropout voltage capability allows efficient power conversion with minimal input-to-output differential
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC power supplies
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's documentation. Confirm that the 'IMPX' designation corresponds to the correct temperature grade and tape-and-reel packaging format required for the assembly process. Cross-reference the datasheet revision history to ensure all electrical characteristics align with the intended design specifications before finalizing procurement orders.
Selection Notes
Select this component when a fixed 5 V rail is required from a higher voltage source with moderate current demands up to 800 mA. Ensure the application maintains sufficient headroom above the dropout voltage across the entire operating temperature range. Verify that the system layout accommodates the necessary output capacitance requirements to maintain stability and transient response performance specified in the technical data.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, which includes adjustable versions and other fixed voltage options such as 1.8 V, 2.5 V, and 3.3 V. The family shares common architectural features including thermal protection and similar pin configurations across various packages like TO-220 and TO-252. The LM1117 serves as a legacy standard often replaced by newer iterations like the TLV1117 or TLV761 for improved functionality.
Replacement Considerations
The TLV1117 is identified as a newer drop-in alternative offering extended temperature ranges. For applications requiring improved functionality in the same SOT-223 package configuration, the TLV761 is recommended as a direct replacement option.
