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Product Detailed Parameters
- Description：IC REG LINEAR 5V 1A SOT89
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- 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 LM1117F-5.0 is a fixed-output low-dropout linear regulator manufactured by HTC, providing a stable 5.0V output with a maximum continuous current of 1.0A. It operates within an input voltage range up to 20V and features a typical dropout voltage of 1.2V at full load. The device incorporates internal current limiting and thermal shutdown protection mechanisms. Designed for surface-mount applications, it utilizes the SOT-89-3L package configuration.
Feature Summary
- Provides fixed 5.0V output with high line and load regulation accuracy
- Integrates internal overcurrent and thermal protection circuits
- Operates with low dropout voltage across wide temperature ranges
Applications
- Active SCSI terminators
- Portable and notebook computer power supplies
- SMPS post-regulators
- Motherboard clock supplies
- Battery chargers
Procurement Notes
Verify manufacturer origin as HTC rather than Texas Instruments when sourcing this specific part number. Confirm the SOT-89-3L package marking matches '1117C 5.0'. Ensure compliance with moisture sensitivity level 3 requirements during storage and handling procedures.
Selection Notes
Select this component for designs requiring a fixed 5V rail with up to 1A capacity. Verify that the input voltage does not exceed 20V. Calculate thermal dissipation based on the junction-to-ambient resistance limits for the SOT-89 package to determine if additional copper area or heat sinking is necessary.
Part Context
This device belongs to the LM1117 series of positive voltage regulators. It shares architectural similarities with other industry-standard LDOs but offers distinct performance characteristics in terms of dropout voltage and current capability. The F suffix specifically denotes the SOT-89 surface-mount package variant.
Replacement Considerations
LM1117S-5.0 (SOT-223 package)
FAQ
What is the minimum output capacitance required for stability?
An output capacitor of 10 µF or larger is required for output stability.
How does the dropout voltage vary with load current?
The dropout voltage is typically 1.0V at 100mA, 1.1V at 500mA, and 1.2V at 1A output current.
