Current-Mode PWM Controller The TL2843DR is a PWM controller IC manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** TL2843DR
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Operating Voltage Range:** 8.5V to 30V
- **Output Voltage:** Adjustable
- **Switching Frequency:** Up to 500 kHz
- **Output Current (Source/Sink):** 200mA (Peak)
- **Duty Cycle Range:** 0% to 100%
- **Error Amplifier Bandwidth:** 1 MHz
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8
### **Descriptions:**
The TL2843DR is a high-performance current-mode PWM controller designed for switching power supply applications. It provides precise regulation and protection features, making it suitable for AC/DC and DC/DC converters. The device includes an error amplifier, oscillator, PWM comparator, and output driver.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Switching Frequency:** Allows optimization for efficiency and size.
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.
- **Soft-Start Capability:** Reduces inrush current during startup.
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.
- **Internal Trimmed Bandgap Reference:** Provides stable voltage regulation.
- **Low Startup Current:** Typically 0.5mA for efficient operation.
This information is based on TI's datasheet for the TL2843DR.
