MC33067: High Performance Resonant Mode Controller

The MC34067/MC33067 are high performance zero voltage switch resonant mode controllers designed for off-line and dc-to-dc converter applications that utilize frequency modulated constant off-time or constant deadtime control. These integrated circuits feature 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 and latch, programmable soft-start circuitry, inputundervoltage lockout with selectable thresholds, and reference undervoltage lockout.These devices are available in dual-in-line and surface mount packages.

Features
  • 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
  • Pb-Free Packages are Available*
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
High Performance Resonant Mode ControllerMC34067/D (534kB)15
Package Drawings (2)
Document TitleDocument ID/SizeRevision
PDIP-16648-08 (34.2kB)V
SO-16 WB751G-03 (56.7kB)D
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC33067DWGActivePb-free Halide freeSOIC-16W751G-033Tube47$1.3333
MC33067DWR2GActivePb-free Halide freeSOIC-16W751G-033Tape and Reel1000$1.3333
MC33067PGActivePb-free Halide freePDIP-16648-08NATube25$1.3333
MC34067DWGActivePb-free Halide freeSOIC-16W751G-033Tube47$1.4
MC34067DWR2GActivePb-free Halide freeSOIC-16W751G-033Tape and Reel1000$1.4
MC34067PGActivePb-free Halide freePDIP-16648-08NATube25$1.4
Specifications
ProductTopologyControl Modefsw Typ (kHz)Stand-by ModeUVLO (V)Short Circuit ProtectionLatchSoft StartVCC Max (V)Drive Cap. (mA)
MC33067DWGFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
MC33067DWR2GFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
MC33067PGFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
MC34067DWGFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
MC34067DWR2GFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
MC34067PGFlybackVoltage Mode1000NoYesYesNoYes20200 / 200
High Performance Resonant Mode Controller (534kB) MC33067
SO-16 WB MC74HCT4851A
PDIP-16 MC10H350