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*
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Data Sheets (1)
Package Drawings (2)
| Document Title | Document ID/Size | Revision |
|---|
| PDIP-16 | 648-08 (34.2kB) | V |
| SO-16 WB | 751G-03 (56.7kB) | D |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| MC33067DWG | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tube | 47 | $1.3333 |
| MC33067DWR2G | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tape and Reel | 1000 | $1.3333 |
| MC33067PG | Active | Pb-free
Halide free | PDIP-16 | 648-08 | NA | Tube | 25 | $1.3333 |
| MC34067DWG | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tube | 47 | $1.4 |
| MC34067DWR2G | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tape and Reel | 1000 | $1.4 |
| MC34067PG | Active | Pb-free
Halide free | PDIP-16 | 648-08 | NA | Tube | 25 | $1.4 |
Specifications
| Product | Topology | Control Mode | fsw Typ (kHz) | Stand-by Mode | UVLO (V) | Short Circuit Protection | Latch | Soft Start | VCC Max (V) | Drive Cap. (mA) |
|---|
| MC33067DWG | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
| MC33067DWR2G | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
| MC33067PG | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
| MC34067DWG | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
| MC34067DWR2G | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
| MC34067PG | Flyback | Voltage Mode | 1000 | No | Yes | Yes | No | Yes | 20 | 200 / 200 |
