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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO252-3
- 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：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LM1117DTX-ADJ/NOPB is an adjustable low-dropout linear regulator from Texas Instruments, delivering up to 800 mA of output current. It operates within a junction temperature range of 0°C to +125°C and supports input voltages up to 15 V. The device allows output voltage adjustment between 1.25 V and 13.8 V using two external resistors. Key electrical characteristics include a maximum line regulation of 0.2% and load regulation of 0.4%. It features a dropout voltage of 1.2 V at full load and incorporates internal current limiting and thermal shutdown protection.
Feature Summary
- Adjustable output voltage configuration utilizing only two external resistors
- Integrated current limiting and thermal shutdown for circuit protection
- Low dropout voltage capability ensuring efficient power management under heavy loads
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 suffix against the manufacturer's orderable addendum to confirm physical dimensions and pin compatibility. Ensure the component meets RoHS compliance requirements for your assembly process. Confirm that the ambient operating conditions align with the specified junction temperature limits to prevent thermal throttling or damage during operation.
Selection Notes
Select this component when a high-current positive LDO is required for applications needing adjustable voltage levels. Consider the TO-252 package for surface-mount implementations requiring robust thermal dissipation. Evaluate the need for external capacitors to maintain stability and transient response performance according to the datasheet recommendations.
Part Context
This part belongs to the LM1117 series of low-dropout regulators manufactured by Texas Instruments. The series includes fixed-voltage variants alongside adjustable options, available in multiple packages such as SOT-223, TO-220, and WSON. The LM1117 is designed for general-purpose linear regulation tasks where efficiency and compact size are prioritized over switching regulator complexity.
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 compatible replacement option.
