MCP1812BT-028/TT

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

The MCP1812BT-028/TT is a fixed-output Low Dropout (LDO) linear regulator from the MCP1812B family, manufactured by Microchip Technology. It provides a nominal output voltage of 2.8 V with a maximum continuous output current capability of 300 mA. The device operates within an input voltage range of 1.8 V to 5.5 V and maintains an ultra-low quiescent current of 250 nA during normal operation. In shutdown mode, it draws only 5 nA typical supply current. It is housed in a 3-Lead SOT-23 package and is stable with ceramic output capacitors.

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

• Ultra-low power consumption with 250 nA quiescent current during operation and 5 nA in shutdown mode
• High current delivery capability up to 300 mA for demanding loads
• Stable with small ceramic output capacitors, reducing solution size and cost
• Integrated overcurrent protection for enhanced circuit reliability

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

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

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

Verify the specific suffix 'TT' against official datasheets to confirm the 3-Lead SOT-23 package configuration. Ensure the 'B' designation aligns with the requirement for no internal output discharge feature. Confirm that the 2.8 V fixed output matches the system design requirements before procurement.

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

Select this component when high output current up to 300 mA is required alongside minimal standby power consumption. The MCP1812B variant is suitable for designs where output discharge upon shutdown is not needed. Verify that the input voltage remains within the 1.8 V to 5.5 V range under all operating conditions.

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

This part belongs to the MCP1811A/11B/12A/12B family of ultra-low quiescent current LDO regulators. The MCP1812X sub-family specifically offers 300 mA output current capability, distinguishing it from the 150 mA MCP1811X series. The 'B' suffix indicates the absence of an internal output discharge switch, differentiating it from the 'A' variants.

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

MCP1812AT-028/TT: Identical electrical performance but includes an internal output discharge switch.