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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA 8-WSON
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- 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：8-WDFN Exposed Pad
- Supplier Device Package：8-WSON (4x4)
- Grade：-
- Qualification：-
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Overview
The LM1117ILDX-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 output voltage is adjustable from 1.25 V to 13.8 V using two external resistors. This specific variant belongs to the industrial temperature grade (LM1117I), supporting operation between -40°C and +125°C. It features internal current limiting and thermal shutdown protection, ensuring reliability under overload conditions.
Feature Summary
- Adjustable output voltage configuration via external resistor divider
- Integrated current limiting and thermal shutdown protection mechanisms
- Industrial-grade operational temperature range for harsh environments
Applications
- Post-regulator for switching DC-DC converters
- Battery charger circuits
- Portable instrumentation power supplies
Procurement Notes
Verify that the 'I' suffix in the part number corresponds to the industrial temperature range (-40°C to +125°C) rather than the commercial range. Confirm the 'LDX' suffix indicates the specific tape-and-reel packaging format required for automated assembly processes. Ensure compatibility with RoHS standards as indicated by the NOPB designation.
Selection Notes
Select this component when an adjustable positive voltage rail is required within the industrial temperature spectrum. It is suitable for applications needing high ripple rejection and tight line regulation. Designers must ensure the input voltage remains sufficiently above the desired output to maintain regulation, accounting for the specified dropout voltage across the entire operating current range.
Part Context
This device is part of the LM1117 family of low-dropout regulators. The LM1117 series is widely recognized for its robustness and versatility in power management applications. The LM1117ILDX-ADJ/NOPB specifically represents the adjustable version packaged for surface-mount technology, offering a balance of performance and ease of integration into compact electronic designs.
Replacement Considerations
Direct replacements include other LM1117 variants with matching electrical specifications and package types. Verify that substitute parts support the same industrial temperature range and output current capabilities to ensure system compatibility without redesign.
