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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA SOT-223
- 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
- Grade：-
- Qualification：-
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Overview
The LM1117IMP-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 extended industrial temperature range from -40°C to +125°C and accepts input voltages up to 15 V. The device utilizes a SOT-223 (DCY) four-pin surface-mount package. Key electrical characteristics include a typical dropout voltage of 1.2 V at full load, line regulation of 0.2% maximum, and load regulation of 0.4% maximum. Internal circuitry incorporates Zener-trimmed bandgap references for ±1% output accuracy, alongside integrated current limiting and thermal shutdown protection.
Feature Summary
- Integrated current limiting and thermal shutdown mechanisms protect the device against overload conditions and excessive heat generation.
- Zener-trimmed bandgap reference architecture ensures high output voltage accuracy across varying operating temperatures.
- Low dropout voltage capability allows efficient operation with minimal input-to-output differential under heavy loads.
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 that the specific ordering suffix corresponds to the required temperature grade and package configuration. Confirm RoHS compliance status and ensure the component matches the intended PCB footprint dimensions. Cross-reference datasheet revision history for any functional updates or pinout changes before finalizing procurement specifications.
Selection Notes
Select this component when a fixed 5 V rail is required with moderate current demands in space-constrained designs. Ensure the input voltage provides sufficient headroom above the dropout threshold to maintain regulation. Evaluate thermal dissipation requirements based on the expected ambient temperature and load current to determine if additional heatsinking is necessary for reliable long-term operation.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, which are widely used for post-regulation of DC/DC converters and battery chargers. The 'I' designation indicates an extended industrial temperature range compared to the standard commercial variant. The 'NOPB' suffix denotes lead-free construction without halogenated flame retardants, aligning with modern environmental standards.
Replacement Considerations
For drop-in replacements in fixed output SOT-223 package configurations with improved functionality, see the TLV761. For newer general alternatives, see the TLV1117.
