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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO252-3
- 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-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1117DT-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 operates within a junction temperature range of 0°C to +125°C and features line regulation of 0.2% maximum and load regulation of 0.4% maximum. The unit is housed in a TO-252 (DPAK) surface-mount package.
Feature Summary
- Adjustable output voltage configuration utilizing external resistors
- Integrated current limiting and thermal shutdown protection mechanisms
- Zener trimmed band-gap reference for high output voltage accuracy
- Low dropout performance suitable for battery-powered applications
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 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer documentation. Confirm the 'DT' designation corresponds to the TO-252 package variant. Ensure the ADJ suffix matches the required adjustable output functionality rather than fixed voltage options. Cross-reference the datasheet revision date to validate electrical characteristics against current production standards.
Selection Notes
Select this component when an adjustable positive LDO is required with up to 800 mA load capability. The TO-252 package offers a balance between thermal dissipation and space efficiency for surface-mount designs. Consider the 1.2 V dropout voltage requirement relative to the input-output differential. Verify that the operating temperature range meets the application's environmental constraints.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, which includes both adjustable and fixed voltage variants. The family is designed for general-purpose linear regulation tasks requiring moderate current handling. The LM1117 series serves as a legacy alternative to newer devices like the TLV1117, offering comparable electrical performance in standard packages.
Replacement Considerations
The TLV1117 is documented as a drop-in alternative for the LM1117 series. For fixed output configurations in SOT-223 packages, the TLV761 is suggested as a replacement with improved functionality.
