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Product Detailed Parameters
- Description：IC REG LINEAR 5V 1.35A SOT89
- Series：-
- Mfr：Diotec Semiconductor
- 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)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.25V @ 1A
- Current - Output：1.35A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89
- Grade：-
- Qualification：-
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Overview
The Diotec Semiconductor LDI1117-05U is a fixed-output low dropout linear regulator housed in an SOT-89 surface-mount package. It provides a nominal output voltage of 5 V with a tolerance of ±1%. The device supports a maximum output current of 1 A and accepts input voltages up to 15 V. Key electrical parameters include a typical dropout voltage of 1 V at full load, a quiescent current of 5 mA, and a power supply rejection ratio of 50 dB. It operates within a junction temperature range of -40°C to +125°C.
Feature Summary
- Fixed 5 V output with 1% accuracy
- Low dropout operation for efficient voltage regulation
- Integrated thermal overload and current limit protection
Applications
- Battery-powered equipment requiring stable 5 V rails
- General-purpose power management circuits
- Embedded systems with 15 V input sources
Procurement Notes
Verify the specific suffix 'U' corresponds to the SOT-89 package and 15 V rating during procurement. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the ordering quantity matches the manufacturer's standard packaging specifications to avoid handling discrepancies.
Selection Notes
Select this component when a fixed 5 V output is required from inputs up to 15 V. The SOT-89 package suits applications needing moderate heat dissipation in compact designs. Consider the 1 A current capability and 50 dB PSRR for noise-sensitive analog sections powered by unregulated or switching supplies.
Part Context
This part belongs to the LDI1117 series of positive low dropout regulators manufactured by Diotec Semiconductor. The series includes various fixed output voltages and packages such as SOT-223. The LDI1117-05U specifically utilizes the SOT-89 form factor, distinguishing it from higher voltage rated variants in the same family.
Replacement Considerations
Cross-reference with other LDOs offering 5 V output, 1 A current, and SOT-89 packaging. Verify pinout compatibility and thermal performance characteristics before substitution.
