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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 LM1117IMPX-ADJ/NOPB is an adjustable low-dropout linear regulator from Texas Instruments, housed in a space-saving SOT-223 package. It delivers up to 800 mA of output current with a maximum dropout voltage of 1.2 V at full load. The device features a Zener-trimmed bandgap reference, ensuring output voltage accuracy within ±1%. It supports output voltages ranging from 1.25 V to 13.8 V using two external resistors. The component includes built-in current limiting and thermal shutdown protection for enhanced reliability.
Feature Summary
- Adjustable output voltage configuration utilizing only two external resistors
- Integrated current limiting and thermal shutdown mechanisms
- Zener-trimmed bandgap reference for precise output voltage regulation
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC systems
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the 'I' grade designation ensures operation across the extended industrial temperature range of -40°C to +125°C. Ensure the SOT-223 package variant matches the required PCB footprint and thermal dissipation capabilities for the target application environment.
Selection Notes
Select this component when an adjustable output voltage between 1.25 V and 13.8 V is required with high current capability up to 800 mA. Consider the SOT-223 package for space-constrained designs requiring efficient thermal management through the exposed pad. Ensure input voltage remains sufficiently above the desired output to maintain regulation within the specified dropout characteristics under all operating conditions.
Part Context
This part belongs to the LM1117 family of low-dropout linear regulators manufactured by Texas Instruments. The 'IMPX' designation specifies the adjustable version in a SOT-223 package, while 'NOPB' denotes non-plumbum (lead-free) construction. The 'I' suffix identifies the industrial temperature grade, distinguishing it from commercial variants. This family is designed for applications requiring stable voltage regulation with minimal external components.
Replacement Considerations
Texas Instruments recommends the TLV1117 as a newer drop-in alternative. For fixed output configurations in SOT-223 packages with improved functionality, the TLV761 is suggested as a replacement option.
