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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA SOT223
- 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-261-4, TO-261AA
- Supplier Device Package：SOT-223-4
- Grade：-
- Qualification：-
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Overview
The LM1117IMP-ADJ/NOPB is an industrial-grade adjustable low-dropout linear regulator manufactured by Texas Instruments. It provides a maximum output current of 800 mA with a dropout voltage of 1.2 V at full load. The device allows output voltage adjustment from 1.25 V to 13.8 V using two external resistors and maintains accuracy within ±1%. It operates over a temperature range of -40°C to +125°C, features internal current limiting and thermal shutdown protection, and utilizes a Zener-trimmed bandgap reference. The component is housed in a surface-mount SOT-223 package.
Feature Summary
- Adjustable output voltage configuration utilizing only two external resistors
- Integrated current limiting and thermal shutdown for circuit protection
- Zener-trimmed bandgap reference ensuring high output voltage accuracy
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 'I' confirms the extended industrial temperature range (-40°C to +125°C) compared to standard commercial variants. Confirm the 'ADJ' designation indicates the adjustable output version rather than fixed voltage options. Ensure the 'NOPB' suffix denotes lead-free and RoHS compliance status as specified in the manufacturer documentation.
Selection Notes
Select this component when an adjustable positive voltage rail is required with up to 800 mA capacity. It serves as a drop-in replacement for the industry-standard LM317 due to identical pin configurations. Consider the SOT-223 package for space-constrained designs requiring robust thermal dissipation capabilities.
Part Context
This part belongs to the LM1117 family of low-dropout regulators. The 'IMPX' code identifies the specific SOT-223 surface-mount package variant. The 'I' suffix distinguishes it from commercial grade parts by extending the operating temperature range to include sub-zero conditions, making it suitable for harsh industrial environments.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative. For fixed output applications in the same package, the TLV761 offers improved functionality.
