Microchip Technology MCP1665 PFM/PWM Step-up Converter

Microchip Technology MCP1665 PFM/PWM Step-up Converter provides a space-efficient high-voltage step-up power supply solution for applications powered by batteries. The MCP1665 converter features a 36V, 100mΩ integrated switch, controlled start-up voltage, internal compensation, adjustable output voltage, and Pulse Frequency Modulation / Pulse Width Modulation (PFM/PWM) mode. The Undervoltage-Lockout (UVLO) feature of the MCP1665 avoids start-up and operation with low inputs or discharged batteries for cell-powered applications. A typical 3.6A cycle-by-cycle inductor peak current limit operation protects the integrated switch. The output overvoltage protection and open-load protection turn off switching by short-circuiting the feedback pin when feedback resistors are accidentally disconnected. This MCP1665 converter creates a Boost, Single-Ended Primary-Inductance Converter (SEPIC), or flyback DC-DC converters within a small PCB area. The MCP1665 converter suits LCD bias supply for portable applications, camera phone flash, single-cell Li-ion to 5V, 12V, or 24V converters, flashlight, and lighting applications.