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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 1A SOT89-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- 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)：1.4V @ 800mA
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature, Transient Voltage
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
Download product information
Overview
The LB1117AATB180 is a positive fixed-output linear voltage regulator from Diodes Incorporated. It provides a fixed output voltage of 1.8 V with a maximum load current of 1 A. The device operates within an input voltage range of 2.5 V to 18 V and features a typical dropout voltage of 350 mV at full load. It includes internal thermal shutdown, overcurrent protection, and safe operating area (SOA) limiting. The component is housed in a SOT-89-3 package and supports an operating temperature range from -40°C to +125°C.
Feature Summary
- Integrated thermal shutdown and overcurrent protection for robust operation under fault conditions
- High power supply rejection ratio suitable for noise-sensitive applications
- Guard ring die construction designed to enhance transient protection capabilities
Applications
- Battery-powered equipment requiring efficient linear regulation
- General-purpose power supplies
- On-card regulation for embedded systems
Procurement Notes
Verify the specific suffix 'TB' against the manufacturer's official datasheet to confirm pinout compatibility and tape-and-reel specifications. Ensure the procurement source provides valid RoHS compliance documentation. Cross-reference the part number with the latest Diodes Incorporated product change notices to confirm manufacturing status and availability constraints before finalizing orders.
Selection Notes
Select this component when a fixed 1.8 V output is required with up to 1 A load capability. It is appropriate for designs needing high PSRR to suppress input ripple. Consider the SOT-89-3 package size for space-constrained PCB layouts. Verify that the input voltage remains within the 2.5 V to 18 V range to ensure proper regulation and thermal performance.
Part Context
This part belongs to the LB1117 series of low-dropout linear regulators manufactured by Diodes Incorporated. The series offers various fixed output voltages and current ratings. The LB1117 variant specifically targets applications requiring reliable linear regulation with built-in protection features, distinguishing it from adjustable variants or higher-current counterparts in the broader PMIC portfolio.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided reference data. Consult the manufacturer's official replacement guide or contact technical support for verified cross-references.
