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Product Detailed Parameters
- Description：IC REG LINEAR 24V 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)：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：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 L78L24ACUTR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an SOT-89 surface-mount package. It provides a fixed output voltage of 24 V with a maximum output current of 100 mA. The device supports a maximum input voltage of 40 V and operates within a junction temperature range of 0 °C to 125 °C. Electrical characteristics include a typical quiescent current of 6.5 mA, line regulation of 350 mV, load regulation of 200 mV, and a typical power supply rejection ratio (PSRR) of 37 dB at 120 Hz.
Feature Summary
- Integrates internal thermal overload protection and short-circuit protection for robust operation.
- Functions as a fixed voltage regulator suitable for local or on-card regulation applications.
- Designed to replace Zener diode and resistor combinations while offering lower noise and quiescent current.
Applications
- Local or on-card voltage regulation
- Elimination of noise associated with single-point regulation systems
- Replacement for Zener diode/resistor voltage reference circuits
Procurement Notes
Verify that the component matches the specific L78L24ACUTR designation to ensure correct voltage tolerance and package type. Confirm compliance with RoHS directives and environmental standards required by the target application. Cross-reference datasheet electrical parameters against system requirements before finalizing procurement decisions.
Selection Notes
Select this component when a fixed 24 V output is required with moderate current demands up to 100 mA. The SOT-89 package is appropriate for space-constrained surface-mount designs. Ensure the input voltage remains within the 40 V maximum limit and consider thermal management strategies given the internal power dissipation limitations inherent to linear regulation.
Part Context
This part belongs to the L78Lxx family of three-terminal positive regulators manufactured by STMicroelectronics. The 'A' suffix indicates a ±4% output voltage tolerance, distinguishing it from the 'C' variant which offers ±8% accuracy. The 'UTR' suffix denotes the SOT-89 surface-mount packaging configuration.
Replacement Considerations
Compatible replacements within the same family include L78L24AB for wider temperature ranges or L78L24ACZ for through-hole TO-92 mounting. Verify pinout compatibility and thermal resistance specifications when substituting packages.
