APW7143

www.DataSheet4U.com APW7143 3A, 12V, Asynchronous Buck Converter Features Wide Input Voltage from 4.3V to 14V Output Current up to 3A Adjustable Output Voltage from 0.8V to VIN - ±2% System Accuracy 70mΩ Integrated Power MOSFET High Efficiency up to 92% - Automatic Skip/PWM Mode Operation Current-Mode Operation - Easy Feedback Compensation - Stable with Low ESR Output Capacitors - Fast Load/Line Transient Response General Description The APW7143 is a 3A asynchronous Buck converter with an integrated 70mΩ P-channel power MOSFET. The APW7143, designed with a current-mode control scheme, can convert wide input voltage of 4.3V to 14V to the output voltage adjustable from 0.8V to VIN to provide excellent output voltage regulation. For high efficiency over all load current range, the APW7143 is equipped with an automatic Skip/PWM mode operation. At light load, the IC operates in the Skip mode, which keeps a constant minimum inductor peak current, to reduce switching losses. At heavy load, the IC works in PWM mode, which inductor peak current is programmed by the COMP voltage, to provide high efficiency and excellent output voltage regulation. The APW7143 is also equipped with power-on-reset, soft-start, and whole protections (undervoltage, over temperature, and current-limit) into a single package. In shutdown mode, the supply current drops below 3µA. This device, available in an 8-pin SOP-8 package, provides a very compact system solution with minimal external compo...