MICROCHIP MCP1801T 3.3V LDO Voltage Regulator SOT-23-5

The MICROCHIP MCP1801T-3302I/OT is a high-performance, fixed output Low Dropout (LDO) Voltage Regulator. With a compact SOT-23-5 package, this regulator is designed to deliver a stable 3.3V output while supplying up to 150mA of current. Its low quiescent current of just 25µA makes it an exceptional choice for battery-powered applications, ensuring minimal power drain and extended battery life.

This regulator features a high Power Supply Rejection Ratio (PSRR) of 70dB at 10kHz, ensuring excellent noise suppression and stable operation. It is stable with ceramic output capacitors, which offers a cost-effective and reliable solution for your design. The device also includes overcurrent limit with current foldback, providing robust short-circuit protection. The integrated shutdown pin allows for further power saving, reducing current consumption when the regulator is not in use.

The input operating range of 2.0V to 10.0V makes it ideal for two to six primary cell battery-powered applications, 9V alkaline batteries, and one or two cell Li-ion-powered systems. Its precision output and fast transient response ensure a clean and reliable power supply for sensitive electronics.

Specifications

• Output Voltage: 3.3V (fixed)
• Output Current: 150mA (max)
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 25µA (typical)
• Input Voltage Range: 2.0V to 10.0V
• PSRR: 70dB (typical at 10kHz)
• Output Type: Fixed
• Number of Outputs: 1
• Polarity: Positive
• Case Style: SOT-23 (SOT-23-5)
• Mounting: Surface Mount
• Operating Temperature Range: -40°C to +85°C
• Special Features: Shutdown pin, current limit protection, stable with ceramic output capacitor

This LDO regulator is a reliable and efficient power management solution, providing a clean and stable 3.3V rail for a wide variety of applications.