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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1A TO252-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：1.25V
- Voltage - Output (Max)：16.6V
- 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-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
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Overview
The LA1117AACAADJ is a low dropout linear regulator manufactured by Diodes Incorporated. It belongs to the AZ1117 series, which provides current limiting and thermal shutdown protection. The device features a trimmed bandgap reference for output voltage accuracy within 1% for fixed voltages of 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, and 5.0V. It supports an adjustable version with a reference voltage of 1.25V. The regulator delivers up to 1A output current with a typical dropout voltage of 1.15V at full load. It operates over a temperature range of -40°C to +125°C TJ.
Feature Summary
- Provides low dropout performance suitable for battery-powered applications
- Includes built-in current limit and thermal shutdown protection
- Features a trimmed bandgap reference for high output voltage accuracy
Applications
- Battery-powered equipment
- Post-regulation for switching regulators
- SCSI-2 active termination
Procurement Notes
This component is officially designated as End-of-Life (EOL) by Diodes Incorporated. The manufacturer has issued a product discontinuance notification indicating that production will cease. Procurement should be avoided for new designs due to the lack of future supply availability. Existing inventory may be limited or exhausted.
Selection Notes
Designers must verify if the required output voltage matches the available fixed options or if the adjustable variant suits the circuit needs. Given the EOL status, alternative components from other manufacturers or newer generations within the same family should be evaluated for long-term project viability. Ensure input voltage constraints and thermal dissipation requirements are met before finalizing any legacy procurement.
Part Context
The LA1117AACAADJ is part of the broader AZ1117 series of positive voltage regulators. This series includes various packages such as SOT-223, TO-220, and TO-252, offering both fixed and adjustable output versions. The specific suffix indicates package and tolerance specifications within the Diodes Incorporated portfolio, aligning with industry-standard pinouts for three-terminal LDOs.
Replacement Considerations
Public confirmed substitute part numbers are not provided in the available documentation. Due to the End-of-Life status, direct replacements from Diodes Incorporated are unavailable. Engineers should consult official cross-reference guides or datasheets for competing manufacturers offering similar 1A LDO specifications.
