Microchip Technology

MCP1257-E/UN  

DC Switching Voltage Regulators

MCP1257-E/UN Description

The MCP1257-E/UN is a highly efficient, fixed output voltage regulator designed by Microchip Technology. This IC is part of the Power Management Integrated Circuits (PMIC) category and is specifically tailored for applications requiring a stable 3.3V output. The MCP1257-E/UN operates within an input voltage range of 1.8V to 3.6V, making it suitable for a variety of low-voltage systems. It delivers a maximum output current of 100mA, ensuring reliable power delivery to connected devices.

The regulator employs a charge pump topology, which is known for its simplicity and efficiency, especially in low-power applications. This topology allows the MCP1257-E/UN to achieve high efficiency without the need for bulky inductors or transformers, thus saving valuable board space. The switching frequency of 650kHz ensures minimal noise and interference, making it ideal for sensitive electronic circuits.

MCP1257-E/UN Features

• Fixed Output Voltage: The MCP1257-E/UN provides a stable 3.3V output, which is ideal for powering microcontrollers, sensors, and other low-voltage devices.
• Wide Input Voltage Range: With an input voltage range of 1.8V to 3.6V, this regulator can accommodate various power sources, including batteries and low-voltage power supplies.
• High Efficiency: Utilizing a charge pump topology, the MCP1257-E/UN achieves high efficiency, translating to longer battery life and reduced power consumption.
• Low Noise: The 650kHz switching frequency ensures minimal electromagnetic interference (EMI), making it suitable for noise-sensitive applications.
• Single Output: The regulator provides a single positive output, simplifying design and reducing complexity.
• Surface Mount Package: The MCP1257-E/UN is available in a surface mount package, facilitating easy integration into compact PCB designs.
• Compliance and Reliability: The MCP1257-E/UN is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing environments.

MCP1257-E/UN Applications

The MCP1257-E/UN is well-suited for a variety of applications where a stable and efficient power supply is crucial. Some specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics such as smartphones, tablets, and wearable devices where battery life and efficiency are paramount.
• Microcontroller Power Supplies: Provides a reliable power source for microcontrollers and other low-power embedded systems.
• Sensors and IoT Devices: Ensures stable power delivery to sensors and IoT devices, maintaining accuracy and reliability in data collection and transmission.
• Medical Devices: Suitable for low-voltage medical devices where precision and low noise are critical.

Conclusion of MCP1257-E/UN

The MCP1257-E/UN from Microchip Technology is a versatile and efficient power management solution, offering a stable 3.3V output with a wide input voltage range. Its charge pump topology and surface mount package make it an ideal choice for compact, low-power applications. The regulator's compliance with environmental and safety standards further enhances its suitability for a wide range of industries. Whether powering microcontrollers, sensors, or portable devices, the MCP1257-E/UN delivers reliable performance and efficiency, making it a standout choice in the PMIC category.

MCP1257-E/UN Documents

Download datasheets and manufacturer documentation for MCP1257-E/UN

Datasheets :

Analog and Interface Product Guide       MCP1256/7/8/9 Datasheet      

PCN Packaging :

Packing Changes 10/Oct/2016       Label and Packing Changes 23/Sep/2015      

Manuals :

Development Tools Catalog      

Design Resources :

MCP1257 Development Tool Selector      

Other Related Documents :

Portable Power Conversion Design Guide      

HTML Datasheet :

MCP1256/7/8/9 Datasheet      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH