Microchip Technology

MCP1642B-50I/MC  

DC Switching Voltage Regulators

MCP1642B-50I/MC Description

The MCP1642B-50I/MC from Microchip Technology is a high-efficiency, fixed-output 5V, 800mA synchronous boost DC-DC converter designed for space-constrained and power-sensitive applications. Operating from an ultra-low 0.65V to 5.5V input range, it integrates a 1MHz switching frequency and synchronous rectification to maximize efficiency (up to 95%) while minimizing external component count. Housed in an 8-pin DFN package, this regulator is ideal for portable electronics, IoT devices, and battery-powered systems requiring stable 5V power from low-voltage sources like single-cell batteries.

MCP1642B-50I/MC Features

• Wide Input Range: Supports 0.65V–5.5V, enabling operation from single-cell alkaline/NiMH or Li-ion batteries.
• High Output Current: Delivers 800mA at 5V, suitable for powering sensors, MCUs, and peripherals.
• Synchronous Rectification: Improves efficiency (up to 95%) vs. non-synchronous alternatives, reducing heat dissipation.
• 1MHz Switching Frequency: Allows for compact inductor and capacitor selection, saving board space.
• Fixed 5V Output: Eliminates feedback resistors, simplifying design.
• Robust Protections: Includes undervoltage lockout (UVLO), overcurrent, and thermal shutdown.
• RoHS3/REACH Compliant: Meets environmental standards for global use.

MCP1642B-50I/MC Applications

• Portable Electronics: Powers 5V subsystems in handheld devices, medical monitors, and GPS units.
• Battery-Powered Systems: Efficiently steps up voltage from single-cell batteries (e.g., 1.5V AA/AAA to 5V).
• IoT/Wearables: Ideal for low-power sensors and wireless modules requiring minimal footprint.
• Industrial Sensors: Provides stable 5V from erratic or decaying battery sources.

Conclusion of MCP1642B-50I/MC

The MCP1642B-50I/MC stands out for its ultra-low input voltage capability, high efficiency, and compact design, making it a superior choice for energy-harvesting and battery-critical applications. Its synchronous architecture and fixed 5V output reduce BOM cost and complexity, while 1MHz operation ensures compatibility with space-constrained layouts. For engineers seeking a reliable, high-performance boost regulator for low-voltage systems, this Microchip solution delivers unmatched versatility and reliability.

MCP1642B-50I/MC Documents

Download datasheets and manufacturer documentation for MCP1642B-50I/MC

PCN Assembly/Origin :

Assembly Site 22/Nov/2023      

Datasheets :

MCP1642B,D Datasheet      

PCN Packaging :

Label and Packing Changes 23/Sep/2015      

Design Resources :

MCP1642 Development Tool Selector      

PCN Design/Specification :

Lead Frame Update 29/Jun/2015       Mold Compound Update 18/Feb/2015      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH