MC34066

Order this document by MC34066/D High Performance Resonant Mode Controllers The MC34066/MC33066 are high performance resonant mode controllers designed for off–line and dc–to–dc converter applications that utilize frequency modulated constant on–time or constant off–time control. These integrated circuits feature a variable frequency oscillator with programmable deadtime, precision retriggerable one–shot timer, temperature compensated reference, high gain wide–bandwidth error amplifier with a precision output clamp, steering flip–flop, and dual high current totem pole outputs ideally suited for driving power MOSFETs. Also included are protective features consisting of a high speed fault comparator and latch, programmable soft–start circuitry, input undervoltage lockout with selectable thresholds, and reference undervoltage lockout. These devices are available in dual–in–line and surface mount packages. Variable Frequency Oscillator with a Control Range Exceeding 1000:1 MC34066 MC33066 HIGH PERFORMANCE RESONANT MODE CONTROLLERS SEMICONDUCTOR TECHNICAL DATA P SUFFIX PLASTIC PACKAGE CASE 648 Programmable Oscillator Deadtime Allows Constant Off–Time Operation Precision Retriggerable One–Shot Timer Internally Trimmed Bandgap Reference 5.0 MHz Error Amplifier with Precision Output Clamp Dual High Current Totem Pole Outputs Selectable Undervoltage Lockout Thresholds with Hysteresis Enable Input Programmable Soft–Start Circuitry Low Startup Current for Off–Li...