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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 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)：1.8V
- 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
- Grade：-
- Qualification：-
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Overview
The LM1117MP-1.8/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 1.8 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 space-saving SOT-223 package and requires a minimum 10-µF tantalum capacitor at the output for stability.
Feature Summary
- Provides fixed 1.8 V output with 800 mA load capability
- Includes integrated current limiting and thermal shutdown protection
- Utilizes Zener-trimmed bandgap reference for high voltage accuracy
- Operates with low dropout voltage under heavy load conditions
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 'MP' indicates the commercial temperature grade (0°C to +125°C) rather than the industrial grade ('I'). Confirm the package type matches the required PCB footprint. Ensure the ordering code includes '/NOPB' if lead-free compliance is mandatory for the assembly process.
Selection Notes
Select this component when a fixed 1.8 V rail is required with moderate current demands. It serves as a direct replacement for older LM317-based designs due to pin compatibility. Consider the TLV1117 or TLV761 for newer designs requiring improved performance or drop-in functionality in the same package.
Part Context
This part belongs to the LM1117 family of 800-mA low-dropout linear regulators from Texas Instruments. The family offers both adjustable and fixed voltage options. The 'MP' designation specifies the commercial operating temperature range, distinguishing it from the 'I' variant which supports extended industrial temperatures.
Replacement Considerations
TI recommends the TLV1117 as a newer drop-in alternative. For fixed output configurations in the SOT-223 package with improved functionality, the TLV761 is suggested as a drop-in replacement.
