onsemi MC34067
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. These devices are available in dual−in−line and surface mount packages.| Part No. | MC34067 |
|---|---|
| Datasheet | MC34067 Download |
| Manufacturer |  onsemi |
| Description | High Performance Resonant-Mode Controllers |
| Buy | Stock & Price |
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
● NCV Prefix for Automotive and Other
APPLICATIONS
Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable● These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant 15 VCC Enable / 9 UVLO Adjust 1 OSC Charge 2 OSC RC Oscillator 3 Control Current 16 One-Shot Error Amp 6 Output Noninverting 8 Input Inverting Input 7 11 Soft-Start VCC UVLO / Enable Variable Frequency Oscillator One-Shot 2.5 V Clamp Error Amp 5.0 V Reference Vref UVLO Steering Flip-Flop Soft-Start Fault Detector/ Latch 5 Vref 14 Output A 12 Output B 13 Pwr GND 10 Fault Input 4 Ground Figure 1.
