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UC2843DR from TI,Texas Instruments

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15.625ms

UC2843DR

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2843DR TI 225 In Stock

Description and Introduction

Current Mode PWM Controller The UC2843DR is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UC2843DR  
- **Type:** Current-Mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Operating Frequency:** Up to 500 kHz  
- **Output Current:** ±1 A (Peak)  
- **Supply Voltage (VCC):** 8.5V to 30V  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2843DR is a fixed-frequency PWM controller designed for DC-DC converter applications. It operates in current-mode control, providing improved loop response and simplified feedback compensation. The device includes features such as undervoltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for precise frequency control.  

### **Features:**  
- **Current-Mode Operation:** Enhances transient response and simplifies loop compensation.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Trimmed Oscillator:** Provides accurate frequency control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Low Startup and Operating Current:** Reduces power consumption.  
- **SOIC-8 Package:** Compact and suitable for space-constrained designs.  

This information is based on the manufacturer's datasheet for the UC2843DR.

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