Product Summary

The MC33067P is a High Performance Resonant Mode Controller. The MC33067P is designed for off–line and dc–to–dc converter applications that utilize frequency modulated constant off–time or constant deadtime control. The MC33067P features a variable frequency oscillator, a precise retriggerable one–shot timer, temperature compensated reference, high gain wide bandwidth error amplifier, 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, programmable soft–start circuitry, input undervoltage lockout with selectable thresholds, and reference undervoltage lockout.

Parametrics

MC33067P absolute maximum ratings: (1)Power Supply Voltage : 20 V; (2)Drive Output Current, Source or Sink (Note 1) Continuous: 0.3 A; (3)Error Amplifier, Fault, One–Shot, Oscillator and Soft–Start Inputs: – 1.0 to + 6.0 V; (4)UVLO Adjust Input: – 1.0 to VCC V; (5)Operating Junction Temperature: + 150 ℃; (6)Operating Ambient Temperature: 0 to + 70 ℃; (7)Storage Temperature: – 55 to + 150 ℃.

Features

MC33067P features: (1)Zero Voltage Switch Resonant Mode Operation; (2)Variable Frequency Oscillator with a Control Range Exceeding 1000:1; (3)Precision One-Shot Timer for Controlled Off-Time; (4)Internally Trimmed Bandgap Reference; (5)4.0 MHz Error Amplifier; (6)Dual High Current Totem Pole Outputs; (7)Selectable Under voltage Lockout Thresholds with Hysteresis; (8)Enable Input; (9)Programmable Soft-Start Circuitry; (10)Low Startup Current for Off-Line Operation.

Diagrams

MC33067P block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MC33067P
MC33067P
ON Semiconductor
Other Power Management High Performance
Data Sheet
Negotiable 
MC33067PG
MC33067PG
ON Semiconductor
Other Power Management High Performance Resonant Mode
Data Sheet
0-1: $1.68
1-25: $1.44
25-100: $1.02
100-500: $0.84