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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA SOT223
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- 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)：1.4V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- 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/S1 is an 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. It operates within a temperature range of -40°C to +125°C and features line regulation of 0.2% and load regulation of 0.4%. The unit includes internal current limiting and thermal shutdown protection.
Feature Summary
- Adjustable output voltage configuration utilizing external resistors
- Integrated current limiting and thermal shutdown protection mechanisms
- Low dropout performance for efficient power conversion
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 'S1' against the manufacturer's official orderable addendum, as standard datasheets typically list 'IMP' for SOT-223 packages without this suffix. Confirm that the component matches the LM1117I electrical characteristics for the industrial temperature range. Ensure compatibility with required output capacitance specifications for stability.
Selection Notes
Select this component when an adjustable positive voltage rail is required in space-constrained designs. The SOT-223 package offers a compact footprint suitable for surface-mount applications. Consider the thermal resistance characteristics of the package relative to the expected power dissipation and ambient operating conditions.
Part Context
This part belongs to the LM1117 family of 800-mA low-dropout linear regulators. The 'IMP' designation indicates the SOT-223 surface-mount package variant. The 'ADJ' suffix specifies the adjustable output version, distinguishing it from fixed-voltage options like 3.3V or 5.0V variants within the same series.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative. For improved functionality in fixed output SOT-223 configurations, the TLV761 is suggested as a replacement option.
