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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO252-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：13.8V
- 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-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1117IDTX-ADJ/NOPB is an adjustable low-dropout linear regulator from Texas Instruments. It provides a maximum output current of 800 mA with a dropout voltage of 1.2 V at full load. The device supports input voltages up to 15 V and allows output voltage adjustment between 1.25 V and 13.8 V using two external resistors. It operates within an extended temperature range of -40°C to +125°C. The component is housed in a surface-mount TO-252 (DPAK) package.
Feature Summary
- Integrated current limiting and thermal shutdown protection mechanisms
- Zener-trimmed bandgap reference ensures high output voltage accuracy
- Capable of setting output voltage via two external resistors
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC converters
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +125°C). Confirm the 'TX' designation corresponds to the tape-and-reel packaging format. Ensure the 'NOPB' suffix confirms lead-free and RoHS compliance status as per manufacturer specifications.
Selection Notes
Select this component for applications requiring an 800 mA positive linear regulator with adjustable output. Verify that the system can accommodate the required minimum 10 µF tantalum output capacitor for stability. Consider the thermal resistance characteristics of the TO-252 package when designing heat dissipation strategies.
Part Context
This part belongs to the LM1117 family of low-dropout regulators. The 'I' suffix denotes the industrial temperature variant, distinguishing it from the commercial grade version which operates from 0°C to +125°C. The device shares pinouts with industry-standard regulators like the LM317 but offers improved dropout performance.
Replacement Considerations
The TLV1117 is documented as a drop-in alternative. For fixed output requirements in SOT-223 packages, the TLV761 is suggested as a replacement with improved functionality.
