APW7142
3A, 12V, Synchronous-Rectified Buck Converter
Features
• • • • • •
Wide Input Voltage from 4.3V to 14V Output C...
APW7142
3A, 12V, Synchronous-Rectified 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
MOSFETs High Efficiency up to 95% - 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 APW7142 is a 3A synchronous-rectified Buck converter with integrated 70m Ω power
MOSFETs. The APW7142, 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 APW7142 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 APW7142 is also equipped with power-on-reset, soft-start, soft-stop, and whole protections (under-
voltage, over-
voltage, 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 e...