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Product Detailed Parameters
- Description：IC REG LINEAR 24V 100MA SOT89-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：24V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：6.5 mA
- PSRR：37dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°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 L78L24ABUTR is a three-terminal positive linear voltage regulator from the L78L series, manufactured by STMicroelectronics. It provides a fixed output voltage of 24 V with a maximum output current of 100 mA. The device features an input voltage range up to 40 V and operates within a junction temperature range of -40 °C to +125 °C. Electrical characteristics include a typical quiescent current of 6.5 mA at 25 °C, line regulation of 350 mV, and load regulation of 200 mV. It utilizes SOT-89 surface-mount packaging.
Feature Summary
- Internal thermal overload protection and short-circuit protection ensure robust operation under fault conditions.
- Designed for local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
- Requires no external components for basic operation, simplifying circuit design.
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode/resistor combinations
- Power pass elements for high-current regulators
Procurement Notes
Verify the specific suffix 'UTR' against official ordering information to confirm tape-and-reel packaging details. Confirm that the 'AB' designation corresponds to the ±4% output voltage tolerance and extended temperature range as documented in the datasheet. Ensure compatibility with SOT-89 footprint requirements during procurement planning.
Selection Notes
Select this component when a fixed 24 V output is required with moderate current demands up to 100 mA. The AB variant offers tighter voltage tolerance compared to the C series. Consider the SOT-89 package for space-constrained surface-mount designs requiring reliable thermal management capabilities inherent to the L78L series.
Part Context
This part belongs to the L78L series of three-terminal positive regulators. The series is characterized by internal current limiting and thermal shutdown mechanisms. It serves as a fixed voltage regulator solution suitable for various applications where simplicity and reliability are prioritized over high-efficiency switching topologies.
Replacement Considerations
L78L24ACUTR (±8% tolerance)
FAQ
What is the output voltage tolerance for the L78L24ABUTR?
The 'AB' suffix indicates a ±4% output voltage tolerance, resulting in a specified range of 23 V to 25 V at 25 °C.
Does the L78L24ABUTR require external capacitors?
No external components are strictly required for basic operation, although the datasheet test circuits typically include input and output capacitors for stability.
