L78L05 Voltage Regulator SMD SOT-23 Voltage Regulator REG11

DescriptionThe foundation of reliable digital electronics is a perfectly stable power supply. The L78L05 5V Voltage Regulator is an essential component for any hardware engineer designing custom printed circuit boards. While heavy-duty motors and relays require massive power supplies, delicate 5V logic chips and low-power sensors simply need a clean, steady voltage rail. This “Low Current” (L) version of the classic 78 series provides exactly that, allowing you to regulate noisy, high-voltage inputs down to a pristine 5V.The Low-Power AdvantageThe standard 7805 regulator is famous for handling up to 1.5 Amps, but it requires a bulky heat sink to do so safely. If you are only powering a single microcontroller and a few basic sensors, your total current draw might be less than 50mA. The L78L05 is optimized specifically for these low-power applications, capable of safely delivering up to 100mA. By shedding the heavy-duty current capacity, it allows for a drastically smaller surface-mount package, saving you precious PCB real estate and keeping your designs impressively slim.Built-In ProtectionDespite its tiny size, the L78L05 does not compromise on safety. It includes internal thermal overload protection, which automatically shuts the IC down if it gets dangerously hot. It also features internal short-circuit current limiting. This makes it an incredibly forgiving component, protecting both itself and your downstream 5V hardware from accidental wiring mistakes or sudden power surges.Crucial Usage Note: Capacitors Required!Like all linear regulators, the L78L05 requires bypass capacitors to function correctly and prevent high-frequency oscillation. For a stable 5V output, you should always place a 0.33µF capacitor on the input pin and a 0.1µF capacitor on the output pin, mounted as close to the IC physically as possible on your PCB.Key Features:Space-Saving Footprint: The tiny surface-mount package frees up space for more sensors and complex trace routing.Rock-Solid Stability: Delivers a highly regulated 5V output to prevent microcontroller brown-outs and sensor noise.Built-in Safety: Thermal shutdown and short-circuit protection keep your hardware safe under fault conditions.Technical Specifications:Output Voltage: 5.0V DC (Fixed)Maximum Output Current: 100mAInput Voltage Range: 7V to 30V DCQuiescent Current: ~3mA to 5mAMounting Style: Surface Mount (SMD)Operating Temperature: -40°C to 125°CIdeal Applications:Providing local 5V logic power on complex, multi-voltage printed circuit boardsRegulating battery power (like a 9V battery) down to 5V for low-current sensor nodesPowering standalone ATmega, ATtiny, or custom microcontroller projectsReplacing bulky TO-220 regulators in space-constrained project enclosures