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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA SOT-223-4
- 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-261-4, TO-261AA
- Supplier Device Package：SOT-223-4
- Grade：-
- Qualification：-
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Overview
The LM1117MPX-5.0 is a fixed-output low-dropout linear regulator manufactured by National Semiconductor, now part of Texas Instruments. It provides a stable 5V output with a maximum load current of 800mA. The device features a typical dropout voltage of 1.2V at full load and maintains an output accuracy within ±1%. It operates with an input voltage range up to 15V and includes integrated thermal shutdown and current limiting protection circuits for robust performance in power management applications.
Feature Summary
- Provides a fixed 5V regulated output with high precision
- Integrates thermal shutdown and current limiting protection mechanisms
- Features a low dropout voltage characteristic for efficient power conversion
- Utilizes a zener-regulated bandgap reference circuit for stability
Applications
- Power management systems requiring stable 5V rails
- Battery-powered equipment utilizing linear regulation
- General-purpose embedded system power supplies
Procurement Notes
Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the specific suffix matches the required package and tape/reel configuration. Confirm RoHS compliance status if environmental regulations apply to your assembly process. Cross-reference datasheet revisions to ensure pinout and electrical characteristics remain consistent with your design requirements.
Selection Notes
Select this component when a fixed 5V output is required with moderate current demands up to 800mA. It is suitable for applications where low noise and simple implementation are prioritized over switching efficiency. Ensure the input voltage remains within the specified maximum limit and that adequate heat dissipation is provided due to the linear regulation topology.
Part Context
This component belongs to the LM1117 series of low-dropout regulators, which shares pin compatibility with the industry-standard LM317 adjustable regulator. The series offers various fixed voltage options and adjustable versions, providing designers with flexible solutions for different voltage requirements while maintaining consistent protection features and package options across the family.
Replacement Considerations
LM1117MPX-5.0/NOPB
FAQ
What is the minimum capacitance required for stability?
A minimum of 10µF tantalum capacitor is required at the output to ensure stability and improve transient response.
Does the device include overload protection?
Yes, the LM1117MPX-5.0 includes both internal current limiting and thermal shutdown protection circuits.
