The DRV101 is a low-side power switch employing apulse-width modulated (PWM) output. Its rugged designis optimized for driving electromechanical devicessuch as valves, solenoids, relays, actuators, andpositioners. The DRV101 is also ideal for drivingthermal devices such as heaters and lamps. PWMoperation conserves power and reduces heat rise, resultingin higher reliability. In addition, adjustablePWM allows fine control of the power delivered to theload. Time from dc output to PWM output is externallyadjustable.The DRV101 can be set to provide a strong initialclosure, automatically switching to a “soft” hold modefor power savings. Duty cycle can be controlled by aresistor, analog voltage, or digital-to-analog converterfor versatility. A flag output indicates thermal shutdownand over/under current limit. A wide supplyrange allows use with a variety of actuators.The DRV101 is available in 7-lead staggered TO-220package and a 7-lead surface-mount DDPAK plasticpower package. It is specified over the extended industrialtemperature range, –40°C to +85°C.