MCP1826S-2502E/DB 250mA Low-Dropout Voltage Regulator (LDO) Technical Overview

The MCP1826S-2502E/DB is a high-performance, 250mA low-dropout voltage regulator (LDO) from Microchip Technology, designed to deliver a fixed 2.5V output from an input voltage range of 2.7V to 6.0V. It is engineered for applications requiring a stable, clean voltage rail with minimal power loss and a compact physical footprint. This LDO is particularly suited for power-sensitive portable devices, battery-powered equipment, and noise-sensitive analog circuits where efficiency and reliability are paramount.

A defining characteristic of this regulator is its extremely low dropout voltage, typically 175 mV at the full 250 mA load. This key feature enables the device to continue regulating the output voltage even when the input voltage dips very close to the output level, which is crucial for maximizing battery life and operational headroom in low-voltage systems. Furthermore, the MCP1826S boasts a very low quiescent current of just 120 µA during operation, which significantly reduces the overall power consumption of the application, especially in standby or idle modes.

Beyond its efficiency, the MCP1826S is designed for stability and simplicity. It requires only a small, space-saving 1.0 µF ceramic output capacitor for stable operation, reducing both the solution size and the Bill of Materials (BOM) cost. The device incorporates a range of integrated protection features, including current limit and thermal shutdown, which safeguard both the regulator and the downstream circuitry from fault conditions. The SOT-223-3 package offers an excellent thermal performance, allowing it to dissipate heat effectively under continuous load.

ICGOODFIND: The MCP1826S-2502E/DB stands out as a robust and highly efficient power management solution. Its combination of low dropout voltage, low quiescent current, and a minimal external component count makes it an ideal choice for designers optimizing for performance, size, and power efficiency in modern electronic products.

Keywords: Low-Dropout (LDO) Regulator, Low Quiescent Current, 250mA Output Current, Thermal Shutdown, Ceramic Output Capacitor Stable.