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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA TO252
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252
- Grade：-
- Qualification：-
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Overview
The LM1117IDTX-3.3 is a fixed-output low-dropout linear regulator from Texas Instruments, providing a stable 3.3 V output with a maximum load current of 800 mA. It operates within an extended industrial temperature range of -40°C to +125°C and utilizes a SOT-223 surface-mount package. The device features internal current limiting and thermal shutdown protection, ensuring reliability under overload conditions. Line regulation is specified at a maximum of 1 mV, while load regulation remains within 10 mV across the operating range.
Feature Summary
- Integrated current limiting and thermal shutdown mechanisms for enhanced circuit protection
- Zener trimmed bandgap reference ensures precise output voltage accuracy
- Designed for space-constrained applications using compact SOT-223 packaging
Applications
- AC drive power stage modules
- Merchant network and server PSU
- Industrial AC/DC systems
- Ultrasound scanners
- Servo drive control modules
Procurement Notes
Verify that the ordering suffix J7003099 corresponds to the specific tape-and-reel configuration or manufacturer lot code intended for your assembly process. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the supplier provides valid traceability documentation matching the datasheet specifications for the LM1117I series.
Selection Notes
Select this component when a fixed 3.3 V rail is required with up to 800 mA capability in an industrial environment. The LM1117I variant is necessary for operations below 0°C. Ensure the input voltage maintains sufficient headroom above the dropout voltage to sustain regulation during peak load currents.
Part Context
This part belongs to the LM1117 family of low-dropout regulators, which includes adjustable versions and other fixed voltage options such as 1.8 V, 2.5 V, and 5.0 V. The 'I' designation indicates the extended temperature grade suitable for harsh environments. The device serves as a standard solution for post-regulation in mixed-signal systems.
Replacement Considerations
Texas Instruments recommends the TLV1117 as a newer drop-in alternative. For improved functionality in the same SOT-223 package, the TLV761 is suggested as a replacement option.
