The MCP1256/7/8/9 is a low-power, low-dropout 3.3V boost charge pump with sleep/bypass modes that can provide up to 100 mA of output current. The device features automatic 1.5x and 2x boost mode switching for high conversion efficiency. Additionally, in light load conditions, the MCP1256/7 can be set to sleep mode to further reduce the device's static current while maintaining a stable output. The MCP1258/9, on the other hand, provides a bypass mode that can connect the input voltage directly to the output. Thus, the MCP1258 or MPC1259 can provide bias voltage to real-time clocks, microcontrollers, or other system devices while consuming virtually no current.
