MCP1812BT-040/LB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MCP1812BT-040/LB is a fixed-output Low Dropout (LDO) linear regulator from the MCP1811X/12X family, providing a nominal output voltage of 4.0V with a maximum continuous output current capability of 300mA. It operates within an input voltage range of 1.8V to 5.5V and maintains an ultra-low quiescent current of 250nA during operation. The device features a shutdown mode with a typical supply current of 5nA and includes overcurrent protection. It is designed for stability with ceramic output capacitors.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low quiescent current consumption of 250nA during active operation
• Ultra-low shutdown supply current of 5nA typical when disabled
• Stable with small ceramic output capacitors for low noise performance
• Integrated overcurrent protection for circuit safeguarding

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Energy harvesting systems
• Long-life battery-powered applications
• Smart cards
• Wearable electronics such as smart watches and headsets
• Medical devices including hearing aids

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'LB' against official Microchip documentation to confirm package type and temperature grade details. Confirm availability status as distribution channels may vary. Ensure compatibility with system ground requirements and capacitor selection guidelines specified in the datasheet for optimal stability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for designs requiring high current delivery at low output voltages while maintaining minimal power drain. The 300mA capability suits moderate load demands. Verify that the input voltage remains within the 1.8V to 5.5V range. Consider the 5nA shutdown current for sleep modes. Ensure thermal management aligns with the operating junction temperature limits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the MCP1811A/11B/12A/12B family of ultra-low quiescent current LDO regulators. The '12' designation indicates the 300mA output current variant, distinguishing it from the 150mA MCP1811X series. The 'B' suffix denotes the absence of an internal output discharge switch, differentiating it from the 'A' variants which include this feature for faster discharge upon shutdown.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

MCP1812AT-040/LB: Identical electrical specifications but includes an internal output discharge switch.