Current Mode PWM Controller The UC2844AD8TR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).
### **Specifications:**
- **Topology:** Current-mode PWM controller
- **Input Voltage Range (VCC):** 8.4V to 30V (operating), up to 36V (absolute max)
- **Output Drive Current:** ±1A (peak)
- **Switching Frequency:** Up to 500kHz
- **Duty Cycle Range:** 0% to 100%
- **Reference Voltage (VREF):** 5V ±1%
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8 (D8)
### **Descriptions:**
- Designed for offline and DC-DC converter applications.
- Features include adjustable switching frequency, cycle-by-cycle current limiting, and under-voltage lockout (UVLO).
- Includes a trimmed oscillator for precise duty cycle control.
### **Features:**
- **Current-Mode Operation:** Provides inherent line feedforward and cycle-by-cycle current limiting.
- **Automatic Feedforward Compensation:** Simplifies loop stabilization.
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.
- **Trimmed Oscillator:** Allows precise frequency control.
- **High-Current Totem Pole Output:** Optimized for driving power MOSFETs.
- **Low Start-Up Current (<1mA):** Reduces power consumption during start-up.
- **Internal Soft-Start:** Minimizes inrush current.
This device is commonly used in power supply designs, including flyback, forward, and boost converters.
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