“Industry's first” 32V 500mA buck regulator with integrated dual power monitor
(Technology News, 12 May 2008 )
The AS7620 is a hysteretic, high efficiency 32V step-down regulator in a small 4x4mm MLPQ 12-pin package. Designed to maximize up-time of utility metering, sensor interface and other industrial motion control and battery-powered data-acquisition equipment, the device developed by austriamicrosystems provides both, early-power-fail warning and power-good signals to microcontrollers that cannot afford to lose critical data during a power failure or brown-out condition.
The AS7620 is optimized for industrial 24V applications and delivers up to 500mA. Available with a fixed 3.3V output or adjustable output voltage between 1.2V and VIN, it features a wide input voltage between 3.6 and 32V, and offers a high efficiency rate of up to 93%. Additionally, an integrated 100% duty-cycle extends operation in low-dropout conditions. A pin-selectable peak current limit optimizes inductor selection, reducing component size. Built on a hysteretic architecture, the AS7620 operates on less than 37µA when delivering 500µA of output current and consuming approximately 100µA at 10mA output, which allows for smaller hold-up capacitors or extends operating battery life for portable analyzers.
