MICROCHIP MCP1826S 3.3V 1A LDO Voltage Regulator, TO-220

The MICROCHIP MCP1826S-3302E/AB is a high-current, low-dropout (LDO) linear voltage regulator designed for robust and efficient power management. This fixed-output device delivers a stable 3.3V from an input voltage range of 2.3V to 6V, making it an excellent choice for stepping down common 5V or 3.7V Li-ion supplies. With a substantial 1A output current capability and an impressively low typical dropout voltage of just 250mV, it maximises efficiency and extends battery life in portable applications.

A key advantage of this regulator is its stability with only a 1µF ceramic output capacitor. This inherent stability with small, low-cost ceramic capacitors reduces overall solution size, component count, and cost while providing lower output noise compared to designs requiring larger electrolytic capacitors. The device also features a power good output signal for system monitoring and a typical low quiescent current of 120µA, further conserving power.

Applications

Engineered for demanding environments, the MCP1826S is ideally suited for modern electronics requiring clean, sub-5V power rails. Its combination of high current, low dropout, and ceramic-cap stability makes it perfect for:

• Communications and networking equipment
• Computer systems and peripherals
• Automotive electronics
• Any application with high current demands at low output voltages, particularly new sub-1.8V designs

Specifications & Features

• Output Type: Fixed Voltage (3.3V)
• Output Current: 1A Maximum
• Input Voltage Range: 2.3V to 6V
• Dropout Voltage: 250mV typical
• Output Capacitor: Stable with a 1µF ceramic capacitor
• Quiescent Current: 120µA typical
• Package: Through-hole TO-220-3
• Operating Temperature Range: -40°C to +125°C
• Special Feature: Power good output pin<br