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Before the arrival of microprocessors, conventional IC regulators were adequate for most control system applications. Today’s more complex systems demand a voltage regulator whose capabilities match those of the components they supply. Like a microprocessor, a regulator must have built-in “smarts”—intelligence, to enhance the microprocessor’s and the system’s performance. The new breed of Smart Regulators now available contain on-chip logic circuitry that provides microprocessor control and supervisory functions. These functions have elevated regulator ICs from their traditional role of simply maintaining a stable supply voltage to important partners in microprocessor control systems.
