The MCP1799-3302H/DB by Microchip is a high-voltage, low-dropout (LDO) regulator designed to deliver a stable output current of 80 mA. This component is capable of operating across a wide input voltage range from 4.5V to 45V, making it versatile for various applications including automotive electronics, microcontroller biasing, and more. It features two standard fixed output voltages of 3.3V and 5.0V, with a tolerance of ±2%.
This LDO regulator is optimized for stability with a minimal 1 µF ceramic output capacitor and includes protection features such as short circuit protection and thermal shutdown protection to enhance reliability. The low quiescent supply current of 25 µA typical and ground current of 45 µA typical at maximum output make it an efficient choice for power-sensitive applications. It is available in 3-Lead SOT-23 and 3-Lead SOT-223 packages, accommodating various design requirements.
Voltage Regulators
Low-dropout (LDO) regulators are a type of voltage regulator designed to maintain a constant output voltage even when the input voltage is very close to the output voltage. This capability makes LDOs particularly useful in applications where power efficiency is critical and the power supply voltage varies or is unregulated.
LDOs are widely used in battery-powered devices, automotive electronics, and portable applications due to their simplicity, low noise output, and ability to provide clean and stable power. When selecting an LDO regulator, important considerations include input and output voltage ranges, output current capability, dropout voltage, power dissipation, and package type. Additionally, features such as thermal protection, short-circuit protection, and the ability to operate with low ESR capacitors can enhance the reliability and versatility of the design.
The MCP1799-3302H/DB is a high-voltage LDO that stands out for its wide input voltage range and high output current capability, making it suitable for a broad range of applications. Its comprehensive protection features ensure reliable operation under various conditions. Engineers should consider this LDO for applications requiring a stable voltage supply from a high-voltage input.