Current-Mode PWM Controller The TL3844P is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:
### **Specifications:**
- **Input Voltage Range (VCC):** 7V to 30V
- **Operating Frequency Range:** Up to 500 kHz
- **Output Duty Cycle Range:** 0% to 100%
- **Output Current (Source/Sink):** 200 mA (Peak)
- **Error Amplifier Gain Bandwidth:** 1 MHz
- **Start-Up Current:** 1 mA (Typical)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 8-Pin PDIP (Plastic Dual In-line Package)
### **Descriptions:**
The TL3844P is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance DC-DC converter applications. It operates in current-mode control, providing improved loop response and simplified feedback compensation. The device includes an internal oscillator, error amplifier, current-sensing comparator, and a totem-pole output driver.
### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.
- **Adjustable Oscillator Frequency:** Set via external timing components.
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.
- **Soft-Start Capability:** Reduces inrush current during power-up.
- **Pulse-by-Pulse Current Limiting:** Provides cycle-by-cycle protection.
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.
- **Low Start-Up and Operating Current:** Improves efficiency.
This information is sourced from Texas Instruments' official documentation for the TL3844P.
