STMicroelectronics

L78L08ABZ

L78L08ABZ Description

The L78L08ABZ from STMicroelectronics is a fixed 8V linear voltage regulator designed for low-power applications. With a maximum input voltage of 30V and an output current capability of 100mA, this regulator provides stable voltage regulation in compact designs. Housed in a TO-92-3 package, it is suitable for through-hole mounting, making it ideal for prototyping and industrial applications. The device features over-current, over-temperature, and short-circuit protection, ensuring reliable operation under adverse conditions. Although marked as obsolete, it remains a robust choice for legacy systems due to its ROHS3 compliance and REACH-unaffected status.

L78L08ABZ Features

• Fixed 8V Output: Ensures consistent voltage regulation for sensitive circuits.
• Wide Input Range (Up to 30V): Accommodates varying input sources.
• Low Quiescent Current (5.5mA): Enhances power efficiency in battery-operated devices.
• High PSRR (45dB at 120Hz): Minimizes noise and ripple for cleaner output.
• Built-in Protections: Includes over-current, over-temperature, and short-circuit safeguards.
• TO-92-3 Package: Compact and easy to integrate in through-hole designs.
• ROHS3 Compliant & REACH Unaffected: Meets environmental and safety standards.

L78L08ABZ Applications

• Consumer Electronics: Powering low-voltage circuits in audio devices and small appliances.
• Industrial Control Systems: Providing stable voltage for sensors and microcontrollers.
• Automotive Electronics: Auxiliary power supply for dashboard components.
• Legacy Equipment Maintenance: Replacement part for older systems requiring 8V regulation.
• Educational & Prototyping: Ideal for breadboard experiments due to its simple form factor.

Conclusion of L78L08ABZ

The L78L08ABZ is a reliable, low-power linear regulator with robust protection features, making it suitable for a variety of low-current applications. While newer alternatives exist, its high PSRR, wide input range, and compact package ensure continued relevance in legacy and cost-sensitive designs. Engineers seeking a stable 8V supply in constrained environments will find this regulator a dependable solution.