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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1A SOT-223-3L
- 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)：3.3V
- 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-261-4, TO-261AA
- Supplier Device Package：SOT-223-3L
- Grade：-
- Qualification：-
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Overview
The TAEJIN LM1117GS-3.3 is a low-dropout positive voltage regulator delivering up to 1A output current in an SOT-223-3L surface-mount package. It provides a fixed 3.3V output with a typical dropout voltage of 1.2V at full load and line regulation of 0.1%. The device includes internal current limiting and thermal shutdown protection, operating within a junction temperature range of -40°C to 125°C.
Feature Summary
- Fixed 3.3V output capability with integrated current limit and thermal shutdown protection
- Low dropout voltage performance ensuring efficient power conversion under varying loads
- Surface-mount SOT-223-3L packaging designed for compact board integration
Applications
- Active SCSI terminators
- Portable and notebook computers
- SMPS post regulators
- Motherboard clock supplies
- Battery chargers
Procurement Notes
Verify the manufacturer designation on the component marking against TAEJIN specifications. Confirm the package type matches the SOT-223-3L footprint requirements. Ensure the ordering suffix corresponds to the Tape & Reel supply format indicated in the official documentation.
Selection Notes
Select this component when a stable 3.3V rail is required for loads up to 1A. Consider the thermal resistance limits of the SOT-223-3L package for high-power dissipation scenarios. Verify that the input voltage remains within the specified operating range relative to the output voltage.
Part Context
This device belongs to the LM1117 series of low-dropout linear regulators. It shares architectural similarities with other industry-standard LDOs but is specifically manufactured by TAEJIN (HTC Korea). The GS variant denotes the specific surface-mount package configuration available in the product line.
Replacement Considerations
LM1117S-3.3
FAQ
What is the maximum input voltage for the LM1117GS-3.3?
The absolute maximum input supply voltage is 20V, though the recommended operating input voltage is typically up to 12V or 15V depending on the specific electrical characteristic table referenced.
Does the LM1117GS-3.3 require an external capacitor for stability?
Yes, an output capacitor of 10µF or larger is required for output stability as specified in the application information.
