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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO220-3
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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：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-ADJ/NOPB is an adjustable low-dropout linear regulator from Texas Instruments, delivering up to 800 mA of output current. It provides a regulated output voltage range of 1.25 V to 13.8 V using two external resistors. The device features a typical dropout voltage of 1.2 V at full load and includes internal current limiting and thermal shutdown protection. It operates within a junction temperature range of 0°C to +125°C and utilizes a TO-252 (DPAK) surface-mount package.
Feature Summary
- Adjustable output voltage configuration via external resistors
- Integrated current limiting and thermal shutdown protection
- Low dropout voltage performance under heavy loads
- Zener trimmed band-gap reference for high accuracy
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 'T' indicates tape-and-reel packaging and 'NOPB' confirms lead-free/RoHS compliance. Confirm the package type matches the required PCB footprint. Ensure input voltage does not exceed absolute maximum ratings during operation.
Selection Notes
Select this component when an adjustable positive voltage rail is required with moderate current demands. Verify that the application can accommodate the minimum 10 µF tantalum output capacitor requirement for stability. Consider thermal dissipation requirements based on the voltage differential and load current.
Part Context
This part belongs to the LM1117 family of low-dropout regulators. It serves as a direct pin-compatible alternative to older standards like the LM317 but offers lower dropout voltage and higher current capability in a compact surface-mount form factor suitable for modern PCB designs.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative offering improved functionality. For fixed output applications in SOT-223 packages, the TLV761 is suggested as a replacement with enhanced features.
