MCP1811B集成电路（IC）的线性+开关稳压器规格书PDF中文资料

MCP1811B属于集成电路（IC）的线性+开关稳压器。由微芯科技股份有限公司制造生产的MCP1811B稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

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)