Current-Mode PWM Controller The TL2843D is a PWM controller IC manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Output Configuration:** Single-Ended
- **Number of Outputs:** 1
- **Switching Frequency:** Up to 500 kHz
- **Duty Cycle (Max):** 50%
- **Supply Voltage (VCC):** 8.4V to 30V
- **UVLO (Undervoltage Lockout):** 8.4V (Turn-On), 7.6V (Turn-Off)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8
### **Descriptions:**
- The TL2843D is a high-performance current-mode PWM controller designed for DC-DC converter applications.
- It features a trimmed oscillator for precise duty cycle control and includes a high-gain error amplifier.
- The device is optimized for offline and DC-DC power supplies with fixed-frequency operation.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Trimmed Oscillator:** Provides accurate frequency control.
- **High-Current Totem-Pole Output:** Suitable for driving power MOSFETs directly.
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.
- **Internal Soft-Start:** Reduces inrush current during startup.
- **Low Operating Current:** Typically 11mA.
This information is based solely on the manufacturer's datasheet and technical documentation.
