Current-Mode PWM Controller The TL3844 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Input Voltage Range:** Up to 30V (for VCC)
- **Operating Frequency:** Adjustable up to 500kHz
- **Output Duty Cycle:** Up to 100%
- **Current Sensing:** Peak current-mode control
- **Error Amplifier Bandwidth:** 1MHz (typical)
- **Start-Up Current:** <1mA
- **Undervoltage Lockout (UVLO):** 16V (on) / 10V (off) (typical)
- **Output Drive Current:** ±200mA (peak)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The TL3844 is a fixed-frequency pulse-width modulation (PWM) controller designed for DC-DC converter applications. It provides precise regulation through peak current-mode control, enhancing stability and transient response. The device includes an integrated error amplifier, oscillator, and high-current totem-pole output driver, making it suitable for power supply designs.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Oscillator Frequency:** Allows flexibility in design.
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Enhances protection.
- **Internal Trimmed Bandgap Reference:** Provides accurate voltage regulation.
- **Low Start-Up and Operating Current:** Improves efficiency.
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.
For detailed application notes and schematics, refer to the official TI datasheet.
