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  • In Stock: 20000
  • Available: 584873

Reference Price(In US Dollars)

QtyUnit PriceExt.Price
1+US $0.11088US $0.11
10+US $0.07392US $0.74
30+US $0.05544US $1.66
100+US $0.04435US $4.44
500+US $0.04066US $20.33
1000+US $0.03696US $36.96

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The L78L05ACUTR is a low-dropout voltage regulator (LDO) manufactured by STMicroelectronics. It is part of the L78 series of fixed positive voltage regulators designed to provide a stable output voltage for various electronic applications.

Key Features:

  • Fixed Output Voltage: The L78L05ACUTR provides a fixed output voltage of +5 volts, making it suitable for powering a wide range of digital and analog circuits requiring a stable voltage supply.
  • Low Dropout Voltage: With its low dropout voltage characteristics, the L78L05ACUTR can regulate the output voltage even when the input voltage is close to the desired output voltage, minimizing power dissipation and maximizing efficiency.
  • Output Current Capability: This voltage regulator is capable of sourcing a continuous output current of up to 100mA, allowing it to power low to moderate power consumption loads such as sensors, microcontrollers, and small signal ICs.
  • Internal Thermal Shutdown: Equipped with internal thermal shutdown protection, the L78L05ACUTR safeguards itself against overheating by shutting down operation when the junction temperature exceeds a safe threshold, preventing damage to the device.
  • Short Circuit Protection: Incorporating short circuit protection, the L78L05ACUTR can withstand transient fault conditions and current surges without sustaining damage, enhancing system reliability and robustness.
  • Wide Operating Temperature Range: The voltage regulator operates reliably over a wide temperature range, typically from -40°C to +125°C, making it suitable for use in harsh environmental conditions and industrial applications.
  • Miniature SOT-89 Package: Packaged in a small surface-mount SOT-89 package, the L78L05ACUTR offers compact dimensions and ease of integration into space-constrained PCB layouts and electronic assemblies.


  • Power Supply Regulation: Used as a linear voltage regulator in power supply circuits to provide a stable and regulated voltage output for microcontrollers, sensors, ICs, and other electronic components.
  • Embedded Systems: Integrated into embedded systems, IoT devices, and portable electronics for voltage regulation and power management, ensuring reliable and efficient operation of electronic subsystems.
  • Battery-Powered Devices: Employed in battery-powered devices such as portable gadgets, handheld instruments, remote controls, and wearable devices to regulate battery voltage and extend battery life.
  • Consumer Electronics: Utilized in consumer electronic products like audio/video equipment, digital cameras, modems, and routers to maintain consistent voltage levels for optimal performance and signal integrity.
  • Automotive Electronics: Integrated into automotive electronics systems for voltage regulation in automotive infotainment systems, dashboard displays, interior lighting, and automotive sensors.

Functional Equivalent (FE) materials, including Fused Filament Fabrication (FFF) form, assembly, and functionally compatible substitute materials.


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