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Product Detailed Parameters
- Description：IC REG LINEAR 5V 100MA SOT89-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：5.5 mA
- Current - Supply (Max)：6 mA
- PSRR：49dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The L78L05ACUTR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78Lxx series, housed in a surface-mount SOT-89 package. It provides a fixed 5 V output with a maximum current of 100 mA and an input voltage range up to 30 V. The device features internal current limiting and thermal shutdown for robust protection. Electrical characteristics include a line regulation of 150 mV, load regulation of 60 mV, and a quiescent current of 6 mA at 25 °C. It operates within a junction temperature range of 0 to 125 °C.
Feature Summary
- Internal current limiting and thermal shutdown mechanisms ensure high reliability and protection against overload conditions.
- Designed as a fixed voltage regulator requiring no external components for basic operation.
- Capable of local or on-card regulation to eliminate noise associated with single-point power distribution.
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode and resistor combinations
- Power management circuits
Procurement Notes
Verify the component authenticity by checking the manufacturer marking and datasheet revision. Confirm the specific suffix matches the required tolerance and packaging format. Ensure the supply chain source provides valid traceability documentation consistent with original equipment manufacturer standards.
Selection Notes
Select this component when a fixed 5 V output is required with moderate current demands up to 100 mA. Consider the SOT-89 package for space-constrained surface-mount designs. Evaluate thermal dissipation requirements based on the input-output voltage differential and ambient operating conditions.
Part Context
This part belongs to the L78Lxx family of three-terminal positive regulators. The 'A' designation indicates a tighter voltage tolerance compared to the standard 'C' variant. The 'UTR' suffix specifies the SOT-89 surface-mount package configuration.
Replacement Considerations
Compatible alternatives include the NCV78L05ABPRMG from onsemi and the UA78L05ACLPR from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution.
FAQ
What is the maximum input voltage for the L78L05ACUTR?
The maximum DC input voltage is 30 V for the 5 V output version.
Does the L78L05ACUTR require external capacitors?
No external components are strictly required for basic operation, though capacitors are recommended for stability in typical applications.
