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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 LM1117LD-ADJ/NOPB is an adjustable positive 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 features a Zener-trimmed bandgap reference ensuring ±1% output accuracy and includes internal current limiting and thermal shutdown protection. The component operates within a junction temperature range of 0°C to +125°C, supports a maximum input voltage of 15 V, and utilizes an 8-pin WSON package.
Feature Summary
- Adjustable output voltage configuration utilizing only two external resistors
- Integrated current limiting and thermal shutdown circuitry for robust operation
- Zener-trimmed bandgap reference mechanism ensuring high voltage accuracy
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 package designation NGN (WSON-8) matches the target PCB footprint requirements. Confirm that the standard LM1117 operating temperature range (0°C to +125°C) aligns with the application environment, as the LM1117I variant covers extended cold temperatures. Ensure the design incorporates the required minimum output capacitance to maintain stability.
Selection Notes
Select this component when an adjustable positive LDO is required for loads up to 800 mA. The device is suitable for applications needing tight line and load regulation with minimal external components. Consider the space-saving WSON package for compact designs. Verify that the input-to-output differential voltage remains above the specified dropout threshold across all operating conditions.
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 options in various packages including SOT-223, TO-220, TO-252, and WSON. The LM1117LD-ADJ/NOPB specifically denotes the adjustable version housed in the WSON-8 package, providing a balance of performance and board space efficiency.
Replacement Considerations
The TLV1117 is documented as a newer drop-in alternative offering improved functionality. For fixed output configurations in SOT-223 packages, the TLV761 serves as a drop-in replacement.
