Description
The MCP1811X/12X devices are 150 mA (MCP1811X) and 300 mA (MCP1812X) Low-Dropout (LDO) linear regulators that provide high-current and low-output voltages while maintaining an ultra-low 250 nA of quiescent current during device operation. In addition, the MCP1811B/12B can be shut down for 5 nA (typical) supply current draw.
The MCP1811X/12X family comes in nine standard fixed output voltage versions: 1V, 1.2V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.3V and 4.0V.

Features
• Ultra-Low Quiescent Current: 250 nA (typical)
• Ultra-Low Shutdown Supply Current:
   - 10 nA typical for MCP1811A/12A
   - 5 nA typical for MCP1811B/12B
• Output Current Capability:
   - 150 mA for MCP1811X (Note 1)
   - 300 mA for MCP1812X
• Input Voltage Range: 1.8V to 5.5V
• Standard Output Voltages (VR): 1V, 1.2V, 1.8V, 2.0V,
   2.5V, 2.8V, 3.0V, 3.3V and 4.0V; for any other voltage
   options (between 1V to 4V), please contact your local
   sales office
• Stable with Ceramic Output Capacitor:
   1.0 μF (MCP1811X) and 2.2 μF (MCP1812X)
• Overcurrent Protection
• Output Discharge (Shutdown mode,
   SHDN = GND) MCP1811A/12A
• Available for the Following Packages:
   - 3-Lead SOT-23
   - 3-Lead SC70
   - 4-Lead 1 x 1 mm UDFN
   - 5-Lead SOT-23
   - 5-Lead SC70

Applications
• Energy Harvesting
• Long-Life, Battery-Powered Applications
• Smart Cards
• Ultra-Low Consumption “Green” Products
• Wearable Electronics (smart watches, bracelets, headsets)
• Medical Devices (hearing aids)