MCP1801T-1802I/OT

Product Overview

The MCP1801T-1802I/OT from Microchip Technology is a positive fixed linear voltage regulator that provides a single 1.8V output at up to 150mA. The device accepts input voltages up to 10V and includes an enable control feature for output control. Over-current protection helps limit output current under fault conditions. A 50µA quiescent current and 70dB power-supply rejection at 10kHz support compact regulated-rail generation in surface-mount designs. The SOT-23-5 package is suited to boards where a small footprint and simple fixed-voltage regulation are required.

Key Features

• Fixed positive output: 1.8V from a single regulator channel.
• Output current: up to 150mA, with over-current protection.
• Input voltage range: maximum input of 10V.
• Control feature: enable for output control.
• Quiescent current: 50µA.
• Power-supply rejection: 70dB at 10kHz.
• Operating temperature: -40°C to 85°C.
• Package: SOT-23-5 surface-mount.

Applications

• Generating a fixed 1.8V supply for low-current digital logic blocks.
• Regulating a 1.8V rail for sensor or measurement circuitry.
• Providing enable-controlled output activation in compact embedded boards.
• Supplying a 1.8V load in small surface-mount assemblies.

Design & Procurement Notes

When selecting this regulator, confirm that the input voltage remains within the 10V maximum and that the load current does not exceed 150mA. The enable feature can be used for output control, so connect it according to the desired control state. The 70dB PSRR at 10kHz may help attenuate ripple from the input supply, while the 50µA quiescent current should be considered in power budgeting. The SOT-23-5 footprint supports surface-mount assembly, and the -40°C to 85°C range defines the temperature limits for normal operation.