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Product Detailed Parameters
- Description：IC REG LIN 3.3V 800MA SOT-223-4
- Series：LM1117-3.3
- 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)：3.3V
- 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-3.3/NOPB is a fixed-output low-dropout linear regulator providing 3.3 V at up to 800 mA. It features a maximum dropout voltage of 1.2 V at full load and operates within a junction temperature range of 0°C to +125°C. The device includes internal current limiting and thermal shutdown protection. Line regulation is specified at a maximum of 0.2%, and load regulation at 0.4%. It utilizes a Zener-trimmed bandgap reference for output accuracy within ±1%.
Feature Summary
- Provides a fixed 3.3 V output with integrated current limiting and thermal shutdown protection
- Features a Zener-trimmed bandgap reference ensuring output voltage accuracy within ±1%
- Operates with a low dropout voltage of 1.2 V at 800 mA load current
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC systems
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify the suffix NOPB indicates lead-free and RoHS compliance as per Texas Instruments standards. Confirm the MPX designation corresponds to the SOT-223 package type. Ensure the operating environment remains within the 0°C to +125°C junction temperature limit. Check that input voltage does not exceed the 15 V maximum rating. Validate that the application circuit meets the minimum output capacitance requirements for stability.
Selection Notes
Select this component when a fixed 3.3 V rail is required with moderate current capability up to 800 mA. It is suitable for applications needing tight line and load regulation specifications. Consider the SOT-223 package for space-constrained designs requiring efficient thermal dissipation. Ensure the input voltage provides sufficient headroom above the 1.2 V dropout voltage at peak load currents.
Part Context
This part belongs to the LM1117 family of low-dropout linear regulators manufactured by Texas Instruments. The LM1117 series offers both adjustable and fixed output versions in various packages including SOT-223, TO-220, and WSON. The LM1117MPX-3.3/NOPB specifically denotes the fixed 3.3 V variant in the SOT-223 package with commercial temperature grading.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative. For improved functionality in the SOT-223 package, the TLV761 is listed as a drop-in replacement.
