UC3550 controller equivalent, pwm/pfm switchable step-up dc-dc controller.
* Input Voltage Range：0.9~8V * Output Voltage Range：1.8~6V Programmable in 0.1V with High Accuracy ± 2.5% * High Efficiency 88% (Typ.) * Low Start-up Voltage of 0.9V Typi.
The UTC UC3550 series goes automatically into skip switching cycles under light load condition to maintain high efficie.
The UTC UC3550 series is a compact, high efficiency, step-up DC/DC controllers includes an error amplifier, oscillator, PWM comparator, skip cycle comparator, voltage reference, soft-start, and high speed lower ON-resistance driver for driving extern.
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