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Product Detailed Parameters
- Description：IC REG LINEAR 24V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Cut Tape (CT),Tape & Box (TB)
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L78L24ACZ-AP is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in a TO-92 package. It provides a fixed output voltage of 24 V with an accuracy of ±8%. The device supports a maximum input voltage of 40 V and delivers up to 100 mA of output current. Electrical characteristics include a typical quiescent current of 6.5 mA at 25 °C and a dropout voltage of 1.7 V. The operating junction temperature range extends from 0 °C to 125 °C.
Feature Summary
- Integrates internal thermal overload protection and short-circuit limiting for robust operation under fault conditions.
- Designed as a fixed-voltage regulator requiring no external components for standard regulation applications.
- Functions effectively as a replacement for Zener diode and resistor combinations, offering lower noise and reduced quiescent current.
Applications
- Local or on-card voltage regulation to eliminate noise associated with single-point distribution.
- Replacement for discrete Zener diode and resistor networks in power supply circuits.
- Configuration with external power pass elements to achieve high-current voltage regulation.
Procurement Notes
Verify that the specific part number matches the required output voltage tolerance and package type. Confirm that the application environment remains within the specified 0 °C to 125 °C operating junction temperature range. Ensure adequate thermal management is provided if the power dissipation approaches the internal limits defined in the datasheet.
Selection Notes
Select this component when a fixed 24 V output is required with ±8% accuracy. The TO-92 package is suitable for through-hole mounting. Consider the 40 V maximum input voltage limit relative to the source supply. Verify that the load current does not exceed the 100 mA rating without additional heat sinking measures.
Part Context
This device belongs to the L78Lxx family of low-power three-terminal positive regulators manufactured by STMicroelectronics. The 'AC' suffix indicates a ±8% output voltage tolerance. The 'Z' designation specifies the TO-92 plastic package, while '-AP' denotes the specific ordering variant.
Replacement Considerations
Direct functional substitutes within the same series include L78L24AB (±4% tolerance) and L78L24C (older generation). Cross-manufacturer equivalents such as UA78L24ACLPR are available but require verification of pinout compatibility and electrical parameter alignment.
