Non-isolated DCDC-CN2902

The CN2902 is a 2.4V-6V wide input range high efficiency boost converter suitable for applications such as smart meters, LCD bias power supplies, Bluetooth speakers, and power systems that require batteries to power high voltage modules. The device integrates two power MOSFETs, eliminating the need for an external rectifier diode, and can provide a 24V/3.5A output. It enters PFM mode for light loads to improve efficiency, and PWM mode for heavy loads to provide a stable switching frequency and low output ripple, with a switching frequency of 1MHz, which allows it to provide high efficiency while using smaller external components, and has a built-in soft-start time of 0.6ms. The built-in 0.6ms soft-start time suppresses output voltage overshoot during startup. The CN2902 features cycle-by-cycle current limiting, output overvoltage protection, and thermal shutdown in an ESOP8 package.