The LTC3256 from Analog Devices maximizes efficiency by running the charge pump in 2:1 mode over a wide operating range. The converters automatically switch to 1:1 mode as needed based on VIN and load conditions. The devices' controlled input current and switching slew rates minimize both conducted and radiated EMI. Reliable system operation and fault monitoring are ensured through an integrated watchdog timer, independent power good outputs, and reset input. LTC3256's buffered 1.1V reference output allows system self-testing for safety-critical applications.