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UC2843DTRG4 from TI,Texas Instruments

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UC2843DTRG4

Manufacturer: TI

Current-Mode PWM Controller 14-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
UC2843DTRG4 TI 28 In Stock

Description and Introduction

Current-Mode PWM Controller 14-SOIC -40 to 85 The **UC2843DTRG4** is a high-performance current-mode PWM controller manufactured by **Texas Instruments (TI)**.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** 7.6V to 30V (start-up), 7.6V to 30V (operating)  
- **Output Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Output Current (Source/Sink):** 1A (peak)  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8 (D)  

### **Descriptions:**  
- Designed for **offline and DC-DC converter** applications.  
- Features **current-mode control** for improved line and load regulation.  
- Includes **undervoltage lockout (UVLO)** with hysteresis for reliable start-up.  
- Provides **cycle-by-cycle current limiting** for enhanced protection.  
- **Automatic feed-forward compensation** simplifies loop stabilization.  

### **Features:**  
- **Precision 5V reference** (±1% tolerance).  
- **Low start-up current** (<1mA).  
- **High-current totem-pole output** for driving power MOSFETs.  
- **Internal trimmed oscillator** for precise frequency control.  
- **Soft-start capability** for controlled power-up.  
- **Latching PWM for cycle-by-cycle current limiting**.  

This device is commonly used in **switching power supplies, battery chargers, and industrial power systems**.  

(Source: Texas Instruments Datasheet)

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