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TL2843 from TI,Texas Instruments

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TL2843

Manufacturer: TI

Current-Mode PWM Controller

Partnumber Manufacturer Quantity Availability
TL2843 TI 38 In Stock

Description and Introduction

Current-Mode PWM Controller The TL2843 is a pulse-width modulation (PWM) controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current (Source/Sink):** 200 mA (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 3 MHz  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C (TL2843B), -40°C to +125°C (TL2843)  
- **Package Options:** PDIP-8, SOIC-8  

### **Descriptions:**
- The TL2843 is a fixed-frequency current-mode PWM controller designed for DC-DC converter applications.  
- It includes an error amplifier, oscillator, PWM comparator, and a high-current totem-pole output driver.  
- The device is optimized for offline and DC-DC power supplies with features like under-voltage lockout (UVLO) and cycle-by-cycle current limiting.  

### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the input voltage range.  
- **Trimmed Oscillator Discharge Current:** Provides precise duty cycle control.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup Current:** Typically 0.5 mA.  

For detailed datasheet information, refer to Texas Instruments' official documentation.

Application Scenarios & Design Considerations

Current-Mode PWM Controller

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