Description
The UC3845 fixed frequency current mode controller is specifically designed for off−line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Features:
- Fixed Frequency Current-Mode PWM Controller
- Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
- Current Mode Operation to 500 kHz
- Automatic Feed Forward Compensation
- Latching PWM for Cycle−By−Cycle Current Limiting
- Internally Trimmed Reference with Under voltage Lockout
- High Current Totem Pole Output
- Under voltage Lockout with Hysteresis
- Low Startup and Operating Current
Specifications:
| Part Number | UC3845 |
| Type | PWM Controller |
| Operation Mode | 500KHz |
| Latching PWM | Cycle By Cycle |