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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 800MA TO252-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- 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-1.8/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 1.8 V output with a maximum load current of 800 mA. It operates within an input voltage range up to 15 V and features a typical dropout voltage of 1.2 V at full load. The device incorporates internal current limiting and thermal shutdown protection mechanisms. It utilizes a Zener-trimmed bandgap reference to ensure output voltage accuracy within ±1%. The component is housed in a space-saving SOT-223 package and requires a minimum 10 µF tantalum capacitor at the output for stability.
Feature Summary
- Provides a fixed 1.8 V regulated output with high precision
- Integrates current limiting and thermal shutdown for robust operation
- Utilizes a Zener-trimmed bandgap reference for accurate regulation
- Requires minimal external components for implementation
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 that the specific ordering suffix matches the required package configuration and temperature rating. Confirm RoHS compliance status as indicated in the official datasheet documentation. Ensure the procurement channel sources genuine Texas Instruments products to guarantee electrical characteristics and reliability standards are met for the intended application environment.
Selection Notes
Select this component when a fixed 1.8 V rail is required with up to 800 mA capability. Consider the SOT-223 package constraints regarding thermal dissipation and board layout. Evaluate the dropout voltage requirements against the available input voltage headroom. Verify that the system can accommodate the necessary output capacitance for stability.
Part Context
This device belongs to the LM1117 family of low-dropout linear regulators from Texas Instruments. The family offers both adjustable and fixed output versions in various packages including SOT-223, TO-220, and WSON. The LM1117 series is designed for applications requiring efficient linear regulation with built-in protection features, serving as a versatile solution for power management in industrial and consumer electronics.
Replacement Considerations
The TLV1117 is identified as a newer drop-in alternative. For fixed output configurations in SOT-223 packages with improved functionality, the TLV761 is suggested as a replacement option.
