When the output voltage is 3.3V, the IC can start from an input voltage of 0.9V with a resistance load of 100Ω, enabling use in devices driven by one alkaline or nickel-hydrogen battery. The input voltage range is 0.65V to 6.0V, and the output voltage range can be set from 1.8V to 5.5V (accuracy ±2.0%) in steps of 0.1V. A switching frequency of 1.2MHz or 3.0MHz can be selected to match the application. PWM control (XC9141) or PWM/PFM auto switching control (XC9142) can be selected for the operation mode. Internal functions include soft start, load disconnection, CL auto discharge, and a bypass switch function. Internal protective circuits include over-current limiting, integral latch, and output short protection. The devices come in SOT-25 package, small USP-6C package (1.8x2.0x0.6mm), and ultra-small WLP-6-01 package (1.28x1.08x0.4mm).
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