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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 800MA TO220-3
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：2.5V
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220-3
- Grade：-
- Qualification：-
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Overview
The LM1117T-2.5/NOPB is a positive low-dropout linear regulator manufactured by Texas Instruments, providing a fixed 2.5 V output with an 800 mA maximum load current capability. It operates within a recommended temperature range of 0°C to +125°C 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 TO-220-3 through-hole package.
Feature Summary
- Provides a fixed 2.5 V regulated output voltage with high precision.
- Delivers up to 800 mA of continuous output current for power management applications.
- Features integrated current limiting and thermal shutdown for robust circuit protection.
- Requires only a single external output capacitor to maintain stability and improve transient response.
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 'NOPB' confirms lead-free and RoHS compliance status as defined by Texas Instruments. Confirm the 'T' designation corresponds to the TO-220 package variant rather than surface-mount options. Ensure the operating environment remains within the specified 0°C to +125°C junction temperature limits to maintain guaranteed electrical performance and reliability standards.
Selection Notes
Select this component when a fixed 2.5 V rail is required with moderate current demands up to 800 mA. The TO-220 package facilitates efficient heat dissipation compared to smaller surface-mount alternatives. Verify that the input voltage provides sufficient headroom above the 2.5 V output plus the dropout voltage. Consider the thermal resistance characteristics of the PCB layout to manage power dissipation effectively under maximum load conditions.
Part Context
This part belongs to the LM1117 family of low-dropout regulators designed for general-purpose power supply applications. The series offers both adjustable and fixed voltage options across various packages including SOT-223, TO-252, and TO-263. The LM1117T-2.5/NOPB specifically addresses the need for a reliable, cost-effective positive voltage regulator in industrial and commercial electronics requiring stable power delivery.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative offering improved functionality. For fixed output configurations in SOT-223 packages, the TLV761 is also listed as a drop-in replacement option.
