UP6101

uP6101 5V/12V Synchronous-Rectified Buck Controller General Description The uP6101 is a compact synchronous-rectified buck controller specifically designed to operate from 5V or 12 supply voltage and to deliver high quality output voltage as low as 0.6V (uP6101A) or 0.8V (uP6101B/C). This (P)SOP8 device operates at fixed 300kHz (uP6101A/B) or 200kHz (uP6101C) frequency and provides an optimal level of integration to reduce size and cost of the power supply. This controller integrates internal MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is built-in to simplify the circuit design and minimize external part count. Other features include internal softstart, under voltage protection, over current protection and shutdown function. With aforementioned functions, this part provides customers a compact, high efficiency, well-protected and cost-effective solutions. This part comes to SOP-8 and PSOP-8 packages. „ „ „ „ Features † Operates from 5V or 12V Supply Voltage 3.3V to 12V VIN Input Range 0.6V or 0.8V to 80% of VIN Output Range 0.6V or 0.8V Internal Reference 1.5% Over Line Voltage and Temperature † Simple Single-Loop Control Design „ Voltage-Mode PWM Control „ Fast Transient Response † High-Bandwidth Error Amplifier „ 0% to 80% Duty Cycle † Lossless, Programmable Overcurrent Protection „ Uses Lower MOSFET RDS(ON) † 300/200kHz Fixed Frequency Oscillator † Internal SoftStart † Integrated Boot Diode Applicatio...