Description

The MCP1252/3 are inductorless, positive-regulated charge pump DC/DC converters. The devices generate a regulated fixed (3.3V or 5.0V) or adjustable output voltage. They are specifically designed for applications requiring low noise and high efficiency and are able to deliver up to 120 mA output current. The devices allow the input voltage to be lower or higher than the output voltage, by automatically switching between buck/boost operation.

Features

? Inductorless, Buck/Boost, DC/DC Converter

? Low Power: 80 μA (Typical)

? High Output Voltage Accuracy:

- ±2.5 (VOUT Fixed)

? 120 mA Output Current

? Wide Operating Temperature Range:

- -40°C to +85°C

? Thermal Shutdown and Short-Circuit Protection

? Uses Small Ceramic Capacitors

? Switching Frequency:

- MCP1252: 650 kHz

- MCP1253: 1 MHz

? Low Power Shutdown Mode: 0.1 μA (Typical)

? Shutdown Input Compatible with 1.8V Logic

? VIN Range: 2.0V to 5.5V

? Selectable Output Voltage (3.3V or 5.0V) or Adjustable Output Voltage

? Space-saving, 8-Lead MSOP

? Soft-Start Circuitry to Minimize In-Rush Current

Applications

? White LED Backlighting

? Color Display Bias

? Local 3V-to-5V Conversions

? Flash Memory Supply Voltage

? SIM Interface Supply for GSM Phones

? Smart Card Readers

? PCMCIA Local 5V Supplies

MCP1252屬于集成電路（IC） > 穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器。微芯科技股份有限公司制造生產(chǎn)的MCP1252穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會通過該元件。