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Product Detailed Parameters
- Description：IC REG LINEAR 5V 1A SOT-223-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.4V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：70dB (120Hz)
- 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-261-4, TO-261AA
- Supplier Device Package：SOT-223-3
- Grade：-
- Qualification：-
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Overview
The LA1117AADB500 is a fixed-output low-dropout (LDO) linear voltage regulator manufactured by Diodes Incorporated. It provides a stable 5.0V output with a maximum load current of 1A. The device operates within an input voltage range of up to 18V and features a typical dropout voltage of 1.3V at full load. It is housed in a surface-mount SOT-223 package, suitable for space-constrained designs. The component supports an operating junction temperature range from -40°C to +125°C, ensuring reliability in various industrial and commercial environments.
Feature Summary
- Provides a fixed 5.0V regulated output voltage
- Supports continuous load currents up to 1A
- Operates with input voltages up to 18V
- Features low dropout voltage characteristics for efficient power management
Applications
- General-purpose power supply regulation
- Battery-powered devices requiring stable 5V rails
- Embedded systems and microcontroller power conditioning
- Industrial control circuitry
Procurement Notes
Verify the obsolete status and end-of-life designation before procurement planning. Confirm availability through authorized distributors or secondary market suppliers, as standard manufacturing channels may no longer support this part. Ensure compatibility with existing PCB footprints and thermal requirements during replacement sourcing.
Selection Notes
Select this component when a fixed 5V output at 1A is required in a compact SOT-223 package. Consider its 18V maximum input rating and -40°C to +125°C operating temperature range for suitability in harsh environments. Evaluate thermal dissipation needs given the 1A current capability and dropout voltage characteristics under expected load conditions.
Part Context
This part belongs to the LA1117 series of LDO regulators from Diodes Incorporated. It shares functional similarities with other fixed-voltage variants in the family but is distinguished by its specific 5.0V output setting and SOT-223 packaging. The series is designed for applications requiring simple, cost-effective voltage regulation with moderate current capabilities.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative components must be evaluated based on pin compatibility, electrical specifications, and package dimensions.
