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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO263
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263 (DDPAK-3)
- Grade：-
- Qualification：-
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Overview
The LM1117S-ADJ/NOPB is an adjustable low-dropout linear regulator from Texas Instruments, delivering up to 800 mA of output current. It provides a regulated output voltage range from 1.25 V to 13.8 V using two external resistors. The device features a typical dropout voltage of 1.2 V at full load and includes built-in current limiting and thermal shutdown protection. It operates within a junction temperature range of 0°C to +125°C.
Feature Summary
- Adjustable output voltage configuration via external resistors
- Integrated current limiting and thermal shutdown protection
- Low dropout voltage performance under high load conditions
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC power supplies
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify the specific suffix 'S' corresponds to the SOT-223 package variant when sourcing. Confirm that the NOPB designation indicates lead-free and RoHS compliance status. Ensure the supplier documentation matches the SNOS412Q datasheet revision for accurate electrical specifications and pin configurations.
Selection Notes
Select this component for applications requiring adjustable positive voltage regulation with moderate current demands. Ensure the input-to-output differential remains above the specified dropout voltage across the entire operating temperature range. Verify that the required output capacitance meets stability criteria for transient response.
Part Context
This part belongs to the LM1117 family of low-dropout regulators. It serves as a direct replacement for older linear regulators like the LM317 in many designs, offering improved dropout characteristics and higher current capability. The adjustable version allows flexible voltage setting without internal fixed resistor networks.
Replacement Considerations
The TLV1117 is identified as a newer drop-in alternative. For fixed output requirements in the SOT-223 package, the TLV761 offers improved functionality.
