Microchip MCP1824ST-3302E/DB 3.3V LDO Voltage Regulator 300mA SOT-223

The Microchip MCP1824ST-3302E/DB 3.3V LDO Voltage Regulator 300mA SOT-223 is a fixed low dropout (LDO) voltage regulator that delivers a stable 3.3V output at up to 300mA. It is designed for modern, high-demand electronics and operates from an input voltage range of 2.1V to 6V.

Overview

A key feature of this regulator is its low quiescent current, typically 120µA across the entire input voltage range. This low power consumption suits battery-powered and portable computing devices, helping to extend operational life. The regulator is built using CMOS technology and is stable with a small 1.0µF ceramic output capacitor, which reduces overall solution size and output noise.

Reliability and Protection

The MCP1824 includes integrated short-circuit current limiting and over-temperature protection to safeguard the regulator and the circuit under fault conditions. It offers a fast response to load transients, supporting stable performance when power demands change rapidly. The typical output voltage tolerance is 0.4%.

Key Features

• Fixed 3.3V output voltage
• Output current up to 300mA
• Input voltage range of 2.1V to 6V
• Typical quiescent current of 120µA
• Typical dropout voltage of 200mV
• Typical output voltage tolerance of 0.4%
• Stable with a 1.0µF ceramic output capacitor
• Integrated short-circuit current limiting and over-temperature protection

Package and Dimensions

The regulator is housed in a compact, surface-mount SOT-223-3 package with three pins. Its typical dropout voltage of 200mV allows it to keep regulating when the input voltage is close to the desired output level, which supports efficiency in low-voltage systems. The supplied dimensions are 3.3 (width), 1.5 (depth) and 4.3 (height), with a weight of 0.767 gm.

Applications

This fixed-voltage regulator is suited to power regulation in computers, computer peripherals, industrial control systems, communications networking equipment, and automotive electronics.

Handling Note

This is an ESD-sensitive device, so proper handling precautions should be taken during handling and use.