• Zero Voltage Switch Resonant Mode Operation • Variable Frequency Oscillator with a Control Range Exceeding 1000:1 • Precision One-Shot Timer for Controlled Off-Time • Internally Trimmed Bandgap Reference • 4.0 MHz Error Amplifier • Dual High Current Totem Pole Outputs • Selectable Undervoltage Lockout Thresholds with Hysteresis • Enable Input • Programmable Soft-Start Circuitry • Low Startup Current for Off-Line Operation