The MAX17497 power regulator addresses all the power requirements on the communications and metrology boards in smart meters. It integrates control circuitry for the universal-input, non-isolated flyback power supplies, and a secondary-side synchronous buck regulator with integrated MOSFETs. All integrated functions support supplies for a powerline communication driver or RF transceiver, the PLC/RF modem (2.5V/3.3V), a circuit-breaker relay, and the regulated supplies for the metrology and application chips. Operating at 250 kHz/500 kHz, the flyback regulator avoids the frequencies used in smart meter communications and thus mitigates frequency interference. The inputs for under-voltage lockout and over-voltage thresholds are programmable. Available in a 3 mm x 3 mm TQFN package, prices start at $1.45 each/1,000. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.