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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA 8-WSON
- 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：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-WDFN Exposed Pad
- Supplier Device Package：8-WSON (4x4)
- Grade：-
- Qualification：-
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Overview
The LM1117LDX-ADJ/NOPB 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 for 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 component utilizes a WSON-8 package.
Feature Summary
- Integrated thermal shutdown and current limiting protection mechanisms
- Zener trimmed band-gap reference ensures high output voltage accuracy
- Capable of operation with minimal external components
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 'LDX' against the manufacturer's official orderable addendum, as standard datasheets typically list 'NGN' for the WSON-8 package. Confirm RoHS compliance status directly with the supplier documentation. Ensure the ordering information matches the exact pin configuration and thermal pad requirements specified in the mechanical data sheet.
Selection Notes
Select this component when an adjustable positive LDO is required for space-constrained designs utilizing surface-mount technology. Verify that the application requires an operating temperature range extending down to -40°C. Ensure the design accommodates the necessary external resistors for voltage setting and includes a minimum 10-µF tantalum capacitor at the output for stability.
Part Context
This part belongs to the LM1117 family of low-dropout regulators produced by Texas Instruments. The series offers both fixed and adjustable output versions across various packages including SOT-223, TO-220, TO-252, and WSON. The LM1117 is designed to replace older industry-standard regulators while providing improved performance in terms of dropout voltage and thermal management.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative. For fixed output configurations in SOT-223 packages, the TLV761 is suggested as a replacement offering improved functionality.
