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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 800MA SOT-223
- 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
- Grade：-
- Qualification：-
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Overview
The LM1117MP-3.3/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 3.3 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 ensures high precision with line regulation of 1 mV and load regulation of 1 mV. It utilizes a Zener-trimmed bandgap reference for ±1% accuracy and includes built-in current limiting and thermal shutdown protection. The component is housed in a space-saving SOT-223 package.
Feature Summary
- Provides a fixed 3.3 V regulated output suitable for standard logic and analog circuits
- Integrates internal current limiting and thermal shutdown mechanisms for robust operation under fault conditions
- Utilizes a Zener-trimmed bandgap reference circuit to maintain tight output voltage accuracy across temperature variations
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' against the manufacturer's latest documentation to confirm the exact operating temperature grade and package variant. Ensure that the application design accounts for the mandatory minimum output capacitance requirements to guarantee stability and transient response performance as specified in the official datasheet.
Selection Notes
Select this component when a fixed 3.3 V rail is required with moderate current demands up to 800 mA. It serves as a direct replacement for older LM317 designs where fixed voltage is preferred over adjustable configurations. Consider the thermal resistance characteristics of the SOT-223 package during high-load scenarios to determine if additional PCB copper area or heat sinking is necessary.
Part Context
This part belongs to the LM1117 family of low-dropout linear regulators from Texas Instruments. The family offers both adjustable and fixed voltage options in various packages including SOT-223 and WSON. The LM1117 series is designed to replace traditional three-terminal regulators, offering superior dropout performance and higher current capability in a compact form factor.
Replacement Considerations
The TLV1117 is identified as a newer drop-in alternative. For applications requiring improved functionality in the fixed output SOT-223 package configuration, the TLV761 is recommended as a drop-in replacement.
