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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263 (DDPAK-3)
- Grade：-
- Qualification：-
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Overview
The LM1117S-5.0/NOPB is a fixed-output low-dropout linear regulator providing a nominal 5V output with an 800mA maximum load current capability. It operates within a junction temperature range of 0°C to 125°C and accepts input voltages up to 15V. The device features a dropout voltage of 1.2V at full load, line regulation of 0.2% maximum, and load regulation of 0.4% maximum. It utilizes a SOT-223 package for surface-mount installation.
Feature Summary
- Integrated thermal shutdown and current limiting protection mechanisms
- Zener-trimmed bandgap reference ensuring high output voltage accuracy
- Low dropout performance suitable for efficient power conversion
Applications
- Post regulator for switching DC-DC converters
- Battery charger circuits
- Portable instrumentation power supplies
Procurement Notes
Verify the specific suffix 'S' indicates the commercial temperature grade (0°C to 125°C) distinct from the industrial 'I' variant (-40°C to 125°C). Confirm the 'NOPB' designation ensures compliance with lead-free and RoHS standards as per Texas Instruments specifications. Cross-reference the datasheet revision history for any updates to electrical characteristics or packaging details before finalizing procurement.
Selection Notes
Select this component when a stable 5V rail is required for loads up to 800mA in space-constrained designs. Ensure the input voltage provides sufficient headroom above the 1.2V dropout voltage across all operating temperatures. Verify that the application circuit includes the mandatory minimum output capacitance to maintain stability and transient response performance.
Part Context
This part belongs to the LM1117 family of low-dropout regulators manufactured by Texas Instruments. It shares architectural similarities with other members like the LM1117T and LM1117MP series but differs in package type and temperature rating. The SOT-223 form factor allows for compact PCB layouts while maintaining adequate thermal dissipation capabilities for moderate power applications.
Replacement Considerations
LM1117S-5.0
FAQ
What is the minimum output capacitance required for stability?
A minimum of 10µF tantalum capacitor is required at the output to ensure stability and improve transient response.
How does the LM1117S differ from the LM1117I?
The LM1117S is rated for a commercial temperature range of 0°C to 125°C, whereas the LM1117I is rated for an extended industrial range of -40°C to 125°C.
